CHMP5 encodes a SNF7-family ESCRT-III-associated regulatory protein that links LIP5/VTA1 to VPS4-dependent ESCRT-III recycling during endosomal multivesicular body sorting. CHMP5 is primarily cytosolic but functions at endosomal ESCRT assemblies, where CHMP5-LIP5/VTA1 interactions help tune VPS4 activation/disassembly and support MVB cargo sorting and lysosomal degradation of membrane proteins such as EGFR. Broader ESCRT contexts including cytokinesis, nuclear-envelope sealing, plasma membrane repair, viral budding, and autophagy are biologically plausible but secondary; infection-specific evidence supports CHMP5 involvement in anti-Shigella autophagy rather than a general CHMP5-specific autophagosome maturation mechanism.
| GO Term | Evidence | Action | Reason |
|---|---|---|---|
|
GO:0005635
nuclear envelope
|
IBA
GO_REF:0000033 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear envelope.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0031468
nuclear membrane reassembly
|
IBA
GO_REF:0000033 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0000815
ESCRT III complex
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: Supported core CHMP5 ESCRT-III complex membership: ESCRT III complex.
Reason: CHMP5 is an ESCRT-III-family component whose best-supported role is regulatory participation in ESCRT/MVB sorting and VPS4-LIP5-mediated ESCRT-III recycling.
Supporting Evidence:
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:18385515
These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
PMID:23105106
promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
PMID:23105106
formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing ESCRT-III protein and CHMP5
file:human/CHMP5/CHMP5-notes.md
The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
|
|
GO:0032511
late endosome to vacuole transport via multivesicular body sorting pathway
|
IBA
GO_REF:0000033 |
MODIFY |
Summary: The MVB-sorting essence is correct, but the human CHMP5 annotation should use the direct MVB sorting term.
Reason: CHMP5 is core to MVB sorting, but this vacuole-transport phrasing is less appropriate for a human protein than multivesicular body sorting pathway or the downstream late endosome-to-lysosome route.
Proposed replacements:
multivesicular body sorting pathway
late endosome to lysosome transport
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0000776
kinetochore
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0001778
plasma membrane repair
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core CHMP5 plasma membrane repair ESCRT context.
Reason: Plasma membrane repair is a valid ESCRT pathway output, but the available CHMP5-specific evidence does not make it the core CHMP5 function.
Supporting Evidence:
PMID:24482116
ESCRT proteins were recruited within seconds to plasma membrane wounds
PMID:24482116
repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005643
nuclear pore
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear pore.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005765
lysosomal membrane
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: lysosomal membrane.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0005828
kinetochore microtubule
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore microtubule.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005829
cytosol
|
IEA
GO_REF:0000044 |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: cytosol.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0007034
vacuolar transport
|
IEA
GO_REF:0000002 |
MODIFY |
Summary: Vacuolar transport is too broad for CHMP5 and should be represented as MVB sorting.
Reason: The conserved ESCRT biology is cargo sorting into MVBs followed by lysosomal delivery, not generic vacuolar transport.
Proposed replacements:
multivesicular body sorting pathway
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
|
|
GO:0007080
mitotic metaphase chromosome alignment
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: mitotic metaphase chromosome alignment.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0010008
endosome membrane
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: Supported CHMP5 endosomal/MVB membrane context: endosome membrane.
Reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB membrane context is relevant to the core MVB sorting function.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
|
|
GO:0030496
midbody
|
IEA
GO_REF:0000120 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0031468
nuclear membrane reassembly
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0032585
multivesicular body membrane
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: Supported CHMP5 endosomal/MVB membrane context: multivesicular body membrane.
Reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB membrane context is relevant to the core MVB sorting function.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
|
|
GO:0039702
viral budding via host ESCRT complex
|
IEA
GO_REF:0000117 |
MARK AS OVER ANNOTATED |
Summary: Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding via host ESCRT complex.
Reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5 is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0043162
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0046761
viral budding from plasma membrane
|
IEA
GO_REF:0000117 |
MARK AS OVER ANNOTATED |
Summary: Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding from plasma membrane.
Reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5 is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0061952
midbody abscission
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody abscission.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0071985
multivesicular body sorting pathway
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0097352
autophagosome maturation
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome maturation.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:1901673
regulation of mitotic spindle assembly
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of mitotic spindle assembly.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:1902774
late endosome to lysosome transport
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: Supported CHMP5 endolysosomal degradation route annotation.
Reason: CHMP5-mediated MVB sorting supports delivery of cargo such as EGFR into the degradative endolysosomal route; this term is an appropriate pathway endpoint for the MVB sorting function.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:1904930
amphisome membrane
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: amphisome membrane.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0005515
protein binding
|
IPI
PMID:16730941 A systematic analysis of human CHMP protein interactions: ad... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:17711858 The MIT domain of UBPY constitutes a CHMP binding and endoso... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:21988832 Toward an understanding of the protein interaction network o... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:25416956 A proteome-scale map of the human interactome network. |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:26496610 A human interactome in three quantitative dimensions organiz... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:27812135 Characterization and Genetic Analyses of New Genes Coding fo... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The NOD2 interaction is experimentally supported, but generic protein binding is uninformative and the NOD2 study does not make this a core CHMP5 molecular function.
Supporting Evidence:
PMID:27812135
The primary interaction was confirmed by coimmunoprecipitation and/or bioluminescence resonance energy transfer (BRET) experiments for 11 of these proteins
PMID:27812135
CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
file:human/CHMP5/CHMP5-notes.md
The NOD2/LPS/MDP annotations are not core CHMP5 function.
file:human/CHMP5/CHMP5-notes.md
the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB regulators in the assay
|
|
GO:0005515
protein binding
|
IPI
PMID:28514442 Architecture of the human interactome defines protein commun... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:32296183 A reference map of the human binary protein interactome. |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:33961781 Dual proteome-scale networks reveal cell-specific remodeling... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005634
nucleus
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: nucleus.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0005829
cytosol
|
IDA
GO_REF:0000052 |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: cytosol.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0015630
microtubule cytoskeleton
|
IDA
GO_REF:0000052 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: microtubule cytoskeleton.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0030496
midbody
|
IDA
GO_REF:0000052 |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0000421
autophagosome membrane
|
IDA
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome membrane.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0000776
kinetochore
|
IDA
PMID:26040712 Spastin and ESCRT-III coordinate mitotic spindle disassembly... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0000815
ESCRT III complex
|
NAS
PMID:36107470 Comprehensive analysis of the human ESCRT-III-MIT domain int... |
ACCEPT |
Summary: Supported core CHMP5 ESCRT-III complex membership: ESCRT III complex.
Reason: CHMP5 is an ESCRT-III-family component whose best-supported role is regulatory participation in ESCRT/MVB sorting and VPS4-LIP5-mediated ESCRT-III recycling.
Supporting Evidence:
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:18385515
These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
PMID:23105106
promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
PMID:23105106
formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing ESCRT-III protein and CHMP5
file:human/CHMP5/CHMP5-notes.md
The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
|
|
GO:0001778
plasma membrane repair
|
IDA
PMID:24482116 ESCRT machinery is required for plasma membrane repair. |
KEEP AS NON CORE |
Summary: Plausible non-core CHMP5 plasma membrane repair ESCRT context.
Reason: Plasma membrane repair is a valid ESCRT pathway output, but the available CHMP5-specific evidence does not make it the core CHMP5 function.
Supporting Evidence:
PMID:24482116
ESCRT proteins were recruited within seconds to plasma membrane wounds
PMID:24482116
repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005643
nuclear pore
|
IDA
PMID:26040713 ESCRT-III controls nuclear envelope reformation. |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear pore.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005765
lysosomal membrane
|
IDA
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: lysosomal membrane.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0005828
kinetochore microtubule
|
IDA
PMID:26040712 Spastin and ESCRT-III coordinate mitotic spindle disassembly... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore microtubule.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0005886
plasma membrane
|
IDA
PMID:24878737 Structure of cellular ESCRT-III spirals and their relationsh... |
KEEP AS NON CORE |
Summary: Supported but non-core plasma membrane ESCRT context for CHMP5.
Reason: Plasma membrane localization in ESCRT/HIV or repair assays is a secondary pathway context and not the main CHMP5 proteostasis function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
PMID:24482116
ESCRT proteins were recruited within seconds to plasma membrane wounds
PMID:24482116
repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0006914
autophagy
|
IMP
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagy.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0006997
nucleus organization
|
IMP
PMID:20616062 Human ESCRT-III and VPS4 proteins are required for centrosom... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: nucleus organization.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0007080
mitotic metaphase chromosome alignment
|
IMP
PMID:20616062 Human ESCRT-III and VPS4 proteins are required for centrosom... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: mitotic metaphase chromosome alignment.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0030496
midbody
|
IDA
PMID:26040712 Spastin and ESCRT-III coordinate mitotic spindle disassembly... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0031468
nuclear membrane reassembly
|
IMP
PMID:26040713 ESCRT-III controls nuclear envelope reformation. |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.
Reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
Supporting Evidence:
PMID:26040712
ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
PMID:26040713
ESCRT-III controls nuclear envelope reformation
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0032585
multivesicular body membrane
|
IDA
PMID:16554368 The ESCRT-III subunit hVps24 is required for degradation but... |
ACCEPT |
Summary: Supported CHMP5 endosomal/MVB membrane context: multivesicular body membrane.
Reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB membrane context is relevant to the core MVB sorting function.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
|
|
GO:0036258
multivesicular body assembly
|
NAS
PMID:16505166 Recycling of ESCRTs by the AAA-ATPase Vps4 is regulated by a... |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body assembly.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0039702
viral budding via host ESCRT complex
|
IDA
PMID:24878737 Structure of cellular ESCRT-III spirals and their relationsh... |
MARK AS OVER ANNOTATED |
Summary: Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding via host ESCRT complex.
Reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5 is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0043162
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
|
IDA
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0046761
viral budding from plasma membrane
|
IDA
PMID:24878737 Structure of cellular ESCRT-III spirals and their relationsh... |
MARK AS OVER ANNOTATED |
Summary: Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding from plasma membrane.
Reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5 is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0051469
vesicle fusion with vacuole
|
NAS
PMID:16505166 Recycling of ESCRTs by the AAA-ATPase Vps4 is regulated by a... |
MODIFY |
Summary: vesicle fusion with vacuole is an over-specific/organellar endpoint for CHMP5 and should be generalized to late endosome-to-lysosome transport.
Reason: The evidence supports ESCRT/MVB cargo sorting and downstream degradative trafficking. It does not establish CHMP5 as a direct vesicle-fusion factor.
Proposed replacements:
late endosome to lysosome transport
Supporting Evidence:
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0061763
multivesicular body-lysosome fusion
|
NAS
PMID:16505166 Recycling of ESCRTs by the AAA-ATPase Vps4 is regulated by a... |
MODIFY |
Summary: multivesicular body-lysosome fusion is an over-specific/organellar endpoint for CHMP5 and should be generalized to late endosome-to-lysosome transport.
Reason: The evidence supports ESCRT/MVB cargo sorting and downstream degradative trafficking. It does not establish CHMP5 as a direct vesicle-fusion factor.
Proposed replacements:
late endosome to lysosome transport
Supporting Evidence:
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0061952
midbody abscission
|
IMP
PMID:20616062 Human ESCRT-III and VPS4 proteins are required for centrosom... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody abscission.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0071985
multivesicular body sorting pathway
|
IDA
PMID:16554368 The ESCRT-III subunit hVps24 is required for degradation but... |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0090148
membrane fission
|
NAS
PMID:19234443 Membrane scission by the ESCRT-III complex. |
ACCEPT |
Summary: Supported ESCRT-pathway membrane-fission output for CHMP5.
Reason: Membrane fission is a core ESCRT-III pathway output. CHMP5 is best viewed as a regulatory ESCRT-III/LIP5-VPS4 component rather than the principal Snf7-like scission polymer, but the annotation is acceptable as pathway-level function.
Supporting Evidence:
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:18385515
These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
PMID:23105106
promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
PMID:23105106
formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing ESCRT-III protein and CHMP5
file:human/CHMP5/CHMP5-notes.md
The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
|
|
GO:0097352
autophagosome maturation
|
IMP
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome maturation.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:1901673
regulation of mitotic spindle assembly
|
IMP
PMID:20616062 Human ESCRT-III and VPS4 proteins are required for centrosom... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of mitotic spindle assembly.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:1902774
late endosome to lysosome transport
|
IMP
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
ACCEPT |
Summary: Supported CHMP5 endolysosomal degradation route annotation.
Reason: CHMP5-mediated MVB sorting supports delivery of cargo such as EGFR into the degradative endolysosomal route; this term is an appropriate pathway endpoint for the MVB sorting function.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:1904930
amphisome membrane
|
IDA
PMID:17984323 Functional multivesicular bodies are required for autophagic... |
KEEP AS NON CORE |
Summary: Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: amphisome membrane.
Reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
Supporting Evidence:
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
PMID:17984323
functional MVBs are required to prevent accumulation of abnormal proteins
PMID:30061757
CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri escape from host autophagy.
file:human/CHMP5/CHMP5-notes.md
the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays
|
|
GO:0030496
midbody
|
EXP
PMID:17853893 Human ESCRT and ALIX proteins interact with proteins of the ... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0071222
cellular response to lipopolysaccharide
|
IMP
PMID:27812135 Characterization and Genetic Analyses of New Genes Coding fo... |
MARK AS OVER ANNOTATED |
Summary: cellular response to lipopolysaccharide is not established as a CHMP5 core response function.
Reason: PMID:27812135 supports CHMP5 as a NOD2-interacting protein and reports LPS/MDP induction context, but this is better treated as interaction/regulatory context than an involved_in response annotation for CHMP5.
Supporting Evidence:
PMID:27812135
CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
file:human/CHMP5/CHMP5-notes.md
The NOD2/LPS/MDP annotations are not core CHMP5 function.
file:human/CHMP5/CHMP5-notes.md
the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB regulators in the assay
|
|
GO:0071225
cellular response to muramyl dipeptide
|
IMP
PMID:27812135 Characterization and Genetic Analyses of New Genes Coding fo... |
MARK AS OVER ANNOTATED |
Summary: cellular response to muramyl dipeptide is not established as a CHMP5 core response function.
Reason: PMID:27812135 supports CHMP5 as a NOD2-interacting protein and reports LPS/MDP induction context, but this is better treated as interaction/regulatory context than an involved_in response annotation for CHMP5.
Supporting Evidence:
PMID:27812135
CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
file:human/CHMP5/CHMP5-notes.md
The NOD2/LPS/MDP annotations are not core CHMP5 function.
file:human/CHMP5/CHMP5-notes.md
the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB regulators in the assay
|
|
GO:0045296
cadherin binding
|
HDA
PMID:25468996 E-cadherin interactome complexity and robustness resolved by... |
MARK AS OVER ANNOTATED |
Summary: Cadherin binding from high-throughput proteomics is not informative for CHMP5 function.
Reason: The cadherin-binding annotation is from broad affinity proteomics and does not connect to the supported ESCRT/MVB/LIP5-VPS4 role of CHMP5.
Supporting Evidence:
PMID:25468996
E-cadherin interactome complexity and robustness resolved by quantitative proteomics
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0036258
multivesicular body assembly
|
NAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body assembly.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:1904903
ESCRT III complex disassembly
|
NAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
ACCEPT |
Summary: Supported core CHMP5 role in ESCRT-III complex disassembly/recycling.
Reason: The strongest CHMP5-specific mechanism is binding LIP5/VTA1 and contributing to VPS4 engagement/activation on ESCRT-III assemblies, making ESCRT-III disassembly a core mechanistic process.
Supporting Evidence:
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:18385515
These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
PMID:23105106
promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
PMID:23105106
formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing ESCRT-III protein and CHMP5
file:human/CHMP5/CHMP5-notes.md
The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
UniProt:Q9NZZ3
Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III)
PMID:16730941
known components of the human ESCRT III complex
PMID:23105106
the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
file:human/CHMP5/CHMP5-notes.md
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
|
|
GO:0005515
protein binding
|
IPI
PMID:18385515 Novel interactions of ESCRT-III with LIP5 and VPS4 and their... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:23105106 Interactions of the human LIP5 regulatory protein with endos... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005515
protein binding
|
IPI
PMID:15644320 The role of LIP5 and CHMP5 in multivesicular body formation ... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005829
cytosol
|
IDA
PMID:15644320 The role of LIP5 and CHMP5 in multivesicular body formation ... |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: cytosol.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0046755
viral budding
|
IMP
PMID:15644320 The role of LIP5 and CHMP5 in multivesicular body formation ... |
MARK AS OVER ANNOTATED |
Summary: Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding.
Reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5 is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
Supporting Evidence:
PMID:15644320
CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0071985
multivesicular body sorting pathway
|
IMP
PMID:15644320 The role of LIP5 and CHMP5 in multivesicular body formation ... |
ACCEPT |
Summary: Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.
Reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required for MVB cargo sorting and downstream lysosomal degradation.
Supporting Evidence:
UniProt:Q9NZZ3
involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
PMID:15644320
both LIP5 and CHMP5 function in MVB sorting
PMID:15644320
Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes, or Golgi but does result in reduced degradation of the EGFR
file:human/CHMP5/CHMP5-notes.md
Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows MVB sorting.
UniProt:Q9NZZ3
enabling degradation of membrane proteins, such as stimulated growth factor receptors
PMID:15644320
reduced degradation of the EGFR similar to silencing of LIP5
PMID:17984323
Functional multivesicular bodies are required for autophagic clearance
file:human/CHMP5/CHMP5-notes.md
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting
|
|
GO:0010824
regulation of centrosome duplication
|
IMP
PMID:20616062 Human ESCRT-III and VPS4 proteins are required for centrosom... |
KEEP AS NON CORE |
Summary: Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of centrosome duplication.
Reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary to the MVB sorting and ESCRT recycling function in the proteostasis review context.
Supporting Evidence:
PMID:20616062
depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
PMID:20616062
producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
PMID:20616062
ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation and then at midbodies during abscission
file:human/CHMP5/CHMP5-notes.md
Secondary ESCRT contexts should generally be kept as non-core.
|
|
GO:0070062
extracellular exosome
|
HDA
PMID:23533145 In-depth proteomic analyses of exosomes isolated from expres... |
KEEP AS NON CORE |
Summary: Extracellular exosome detection is retained as broad non-core location context.
Reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the CHMP5 core cellular function.
Supporting Evidence:
PMID:23533145
In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exosomes
PMID:20458337
MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0070062
extracellular exosome
|
HDA
PMID:19056867 Large-scale proteomics and phosphoproteomics of urinary exos... |
KEEP AS NON CORE |
Summary: Extracellular exosome detection is retained as broad non-core location context.
Reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the CHMP5 core cellular function.
Supporting Evidence:
PMID:23533145
In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exosomes
PMID:20458337
MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0070062
extracellular exosome
|
HDA
PMID:20458337 MHC class II-associated proteins in B-cell exosomes and pote... |
KEEP AS NON CORE |
Summary: Extracellular exosome detection is retained as broad non-core location context.
Reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the CHMP5 core cellular function.
Supporting Evidence:
PMID:23533145
In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exosomes
PMID:20458337
MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0005515
protein binding
|
IPI
PMID:21543490 Mechanism of inhibition of retrovirus release from cells by ... |
MARK AS OVER ANNOTATED |
Summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
Reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term protein binding is too generic to capture CHMP5 function.
Supporting Evidence:
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
PMID:18385515
LIP5 binds preferentially to soluble CHMP5
PMID:23105106
the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5
file:human/CHMP5/CHMP5-notes.md
Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.
|
|
GO:0005829
cytosol
|
TAS
Reactome:R-HSA-3159232 |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: cytosol.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
|
GO:0005829
cytosol
|
TAS
Reactome:R-HSA-917693 |
KEEP AS NON CORE |
Summary: True or plausible broad CHMP5 location: cytosol.
Reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the core function.
Supporting Evidence:
UniProt:Q9NZZ3
Cytoplasm, cytosol
PMID:15644320
We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
file:human/CHMP5/CHMP5-notes.md
Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.
|
Q: Can endogenous CHMP5 depletion/rescue separate its direct LIP5/VTA1-VPS4 regulatory role from pathway-level ESCRT-III membrane-fission annotations?
Q: Which CHMP5-specific autophagy annotations are supported by direct autophagosome closure or maturation assays rather than by ESCRT complex membership?
Q: Should viral-budding annotations for CHMP5 be replaced by a regulatory or non-core context, given evidence that CHMP5 depletion increases HIV-1 release while LIP5 is required?
Experiment: Perform acute endogenous CHMP5 depletion and rescue with wild-type, LIP5-binding-defective, and ESCRT-tail mutant CHMP5 while measuring EGFR degradation, MVB ILV cargo sorting, and VPS4 recruitment/disassembly dynamics.
Hypothesis: CHMP5 rescue of MVB cargo degradation will require its LIP5/VTA1 interaction and will primarily affect VPS4-mediated ESCRT-III recycling rather than initial cargo recognition.
Experiment: Test CHMP5 recruitment and requirement in starvation autophagy, mitophagy, and xenophagy assays using direct reporters for unsealed autophagosomes and autolysosome formation.
Hypothesis: CHMP5 will contribute to autophagic clearance through endolysosomal/MVB function and pathogen-specific xenophagy contexts, but may not be a general autophagosome sealing effector.
Experiment: Compare CHMP5 and LIP5 knockdown/rescue in HIV-1 budding assays while quantifying MVB cargo degradation in parallel.
Hypothesis: CHMP5 perturbation will distinguish MVB sorting from viral release, supporting curation of viral budding as non-core or over-annotated for CHMP5.
CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling. UniProt describes CHMP5 as a "Probable peripherally associated component" of ESCRT-III involved in MVB formation and sorting of endosomal cargo into MVBs, with ILVs delivered to lysosomes for degradation of membrane proteins such as stimulated growth factor receptors [UniProt:Q9NZZ3 "involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs"; UniProt:Q9NZZ3 "enabling degradation of membrane proteins, such as stimulated growth factor receptors"].
The most direct CHMP5-specific cellular evidence is Ward et al. 2005: CHMP5 is a LIP5-binding protein, is mainly cytosolic, and CHMP5 RNAi reduces EGFR degradation without grossly disrupting early endosomes, lysosomes, or Golgi. That paper concludes that LIP5 and CHMP5 function in MVB sorting, while only LIP5 is required for HIV release [PMID:15644320 "We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic."; PMID:15644320 "CHMP5 depletion results in an increase in the release of infectious HIV-1 particles."; PMID:15644320 "both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release."].
The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit. Shim et al. 2008 confirm high-affinity LIP5-CHMP5 binding and suggest CHMP5-bound LIP5 may regulate engagement of other ESCRT-III proteins and VPS4 [PMID:18385515 "LIP5 binds preferentially to soluble CHMP5"; PMID:18385515 "CHMP5 bound to LIP5 might negatively regulate LIP5 for engagement with other ESCRT-III proteins and VPS4"]. Skalicky et al. 2012 show that LIP5 binds a novel MIM element in CHMP5, and that stable VPS4 complexes with LIP5 and CHMP5 require LIP5 to bind both a MIM1-containing ESCRT-III protein and CHMP5 [PMID:23105106 "the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III protein CHMP5"; PMID:23105106 "promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate"].
Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting, so MVB sorting, MVB assembly, ubiquitin-dependent protein catabolism via MVB sorting, late endosome-to-lysosome transport, and ESCRT-III disassembly are core or near-core PN-relevant terms. General ESCRT autophagy literature shows that functional MVBs are required for autophagic clearance of aggregate-prone proteins, but the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific autophagosome sealing assays [PMID:17984323 "Functional multivesicular bodies are required for autophagic clearance"; PMID:17984323 "functional MVBs are required to prevent accumulation of abnormal proteins"]. A Shigella infection study provides CHMP5-specific anti-bacterial autophagy evidence, but it is infection context: IcsB modifies CHMP5 and CHMP5 knockout affects S. flexneri escape from host autophagy PMID:30061757.
Secondary ESCRT contexts should generally be kept as non-core. Broad ESCRT-III papers support roles in cytokinetic abscission, centrosome/spindle maintenance, nuclear envelope sealing, plasma membrane repair, and viral budding, but they should not override the CHMP5-specific MVB/VPS4-LIP5 regulatory function [PMID:20616062 "depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission"; PMID:26040713 "ESCRT-III controls nuclear envelope reformation"; PMID:24482116 "repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions"].
The NOD2/LPS/MDP annotations are not core CHMP5 function. Thiebaut et al. identify CHMP5 as a NOD2-interacting protein and report induction by MDP/LPS, but the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB regulators in the assay [PMID:27812135 "the primary interaction was confirmed by coimmunoprecipitation and/or bioluminescence resonance energy transfer (BRET) experiments for 11 of these proteins"; PMID:27812135 "none of the NIPs isolated here, except RICK, appear to be major regulators of the NOD2 dependent NF-kappaB pathway"].
just deep-research-falcon human CHMP5 timed out after 600 seconds and reported that all providers failed. No CHMP5-deep-research-falcon.md file was written, so this review is based on UniProt, GOA-seeded annotations, cached publications, and the local synthesis above.
The YAML description field was revised to keep it as a standalone biological summary. Project-specific curation framing moved here instead.
*-deep-research*.md file found in this gene directory.ALP → Autophagosome closure maturation and lysosome fusion → Sealing of autophagophore membrane → ESCRT-III complex component AND ALP → Microautophagy → General microautophagy machinery → ESCRT-III complex component (2 rows; shared CHMP template)already_in_goa_exact); "Sealing" group → GO:0000045 autophagosome assembly (more_specific_than_existing_goa); classes context_only/too_broad; branch no_mapping.context_only is correct and the GO:0000815 leaf is the most CHMP5-defensible part of the projection.This file is generated from the current PROTEOSTASIS phase-1 dossier and local gene-review artifacts. Edit the source review, PN mapping, or dossier rather than this generated note when correcting the underlying curation.
id: Q9NZZ3
gene_symbol: CHMP5
product_type: PROTEIN
status: COMPLETE
taxon:
id: NCBITaxon:9606
label: Homo sapiens
description: >-
CHMP5 encodes a SNF7-family ESCRT-III-associated regulatory protein that links LIP5/VTA1 to
VPS4-dependent ESCRT-III recycling during endosomal multivesicular body sorting. CHMP5 is primarily
cytosolic but functions at endosomal ESCRT assemblies, where CHMP5-LIP5/VTA1 interactions help tune
VPS4 activation/disassembly and support MVB cargo sorting and lysosomal degradation of membrane
proteins such as EGFR. Broader ESCRT contexts including cytokinesis, nuclear-envelope sealing,
plasma membrane repair, viral budding, and autophagy are biologically plausible but secondary;
infection-specific evidence supports CHMP5 involvement in anti-Shigella autophagy rather than a
general CHMP5-specific autophagosome maturation mechanism.
alternative_products:
- name: '1'
id: Q9NZZ3-1
- name: '2'
id: Q9NZZ3-2
sequence_note: VSP_042556
existing_annotations:
- term:
id: GO:0005635
label: nuclear envelope
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: is_active_in
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear envelope.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0031468
label: nuclear membrane reassembly
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0000815
label: ESCRT III complex
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: part_of
review:
summary: 'Supported core CHMP5 ESCRT-III complex membership: ESCRT III complex.'
action: ACCEPT
reason: CHMP5 is an ESCRT-III-family component whose best-supported role is regulatory participation in ESCRT/MVB sorting
and VPS4-LIP5-mediated ESCRT-III recycling.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:18385515
supporting_text: These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
- reference_id: PMID:23105106
supporting_text: promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
- reference_id: PMID:23105106
supporting_text: formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing
ESCRT-III protein and CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly
of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
- term:
id: GO:0032511
label: late endosome to vacuole transport via multivesicular body sorting pathway
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: The MVB-sorting essence is correct, but the human CHMP5 annotation should use the direct MVB sorting term.
action: MODIFY
reason: CHMP5 is core to MVB sorting, but this vacuole-transport phrasing is less appropriate for a human protein than
multivesicular body sorting pathway or the downstream late endosome-to-lysosome route.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
proposed_replacement_terms:
- id: GO:0071985
label: multivesicular body sorting pathway
- id: GO:1902774
label: late endosome to lysosome transport
- term:
id: GO:0000776
label: kinetochore
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0001778
label: plasma membrane repair
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: Plausible non-core CHMP5 plasma membrane repair ESCRT context.
action: KEEP_AS_NON_CORE
reason: Plasma membrane repair is a valid ESCRT pathway output, but the available CHMP5-specific evidence does not make
it the core CHMP5 function.
supported_by:
- reference_id: PMID:24482116
supporting_text: ESCRT proteins were recruited within seconds to plasma membrane wounds
- reference_id: PMID:24482116
supporting_text: repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005643
label: nuclear pore
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: part_of
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear pore.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005765
label: lysosomal membrane
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: located_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: lysosomal membrane.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0005828
label: kinetochore microtubule
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore microtubule.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005829
label: cytosol
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: cytosol.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0007034
label: vacuolar transport
evidence_type: IEA
original_reference_id: GO_REF:0000002
qualifier: involved_in
review:
summary: Vacuolar transport is too broad for CHMP5 and should be represented as MVB sorting.
action: MODIFY
reason: The conserved ESCRT biology is cargo sorting into MVBs followed by lysosomal delivery, not generic vacuolar transport.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
proposed_replacement_terms:
- id: GO:0071985
label: multivesicular body sorting pathway
- term:
id: GO:0007080
label: mitotic metaphase chromosome alignment
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: mitotic metaphase chromosome alignment.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0010008
label: endosome membrane
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: 'Supported CHMP5 endosomal/MVB membrane context: endosome membrane.'
action: ACCEPT
reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB
membrane context is relevant to the core MVB sorting function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- term:
id: GO:0030496
label: midbody
evidence_type: IEA
original_reference_id: GO_REF:0000120
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0031468
label: nuclear membrane reassembly
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0032585
label: multivesicular body membrane
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: located_in
review:
summary: 'Supported CHMP5 endosomal/MVB membrane context: multivesicular body membrane.'
action: ACCEPT
reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB
membrane context is relevant to the core MVB sorting function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- term:
id: GO:0039702
label: viral budding via host ESCRT complex
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding via host
ESCRT complex.'
action: MARK_AS_OVER_ANNOTATED
reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5
is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: ubiquitin-dependent protein catabolic process via
the multivesicular body sorting pathway.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0046761
label: viral budding from plasma membrane
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding from plasma
membrane.'
action: MARK_AS_OVER_ANNOTATED
reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5
is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0061952
label: midbody abscission
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody abscission.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0071985
label: multivesicular body sorting pathway
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0097352
label: autophagosome maturation
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome maturation.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:1901673
label: regulation of mitotic spindle assembly
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of mitotic spindle assembly.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:1902774
label: late endosome to lysosome transport
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: Supported CHMP5 endolysosomal degradation route annotation.
action: ACCEPT
reason: CHMP5-mediated MVB sorting supports delivery of cargo such as EGFR into the degradative endolysosomal route; this
term is an appropriate pathway endpoint for the MVB sorting function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:1904930
label: amphisome membrane
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: located_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: amphisome membrane.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:16730941
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:17711858
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:21988832
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:25416956
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:26496610
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:27812135
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The NOD2 interaction is experimentally supported, but generic protein binding is uninformative and the NOD2 study
does not make this a core CHMP5 molecular function.
supported_by:
- reference_id: PMID:27812135
supporting_text: The primary interaction was confirmed by coimmunoprecipitation and/or bioluminescence resonance energy
transfer (BRET) experiments for 11 of these proteins
- reference_id: PMID:27812135
supporting_text: CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The NOD2/LPS/MDP annotations are not core CHMP5 function.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB
regulators in the assay
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:28514442
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:32296183
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:33961781
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005634
label: nucleus
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: nucleus.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0005829
label: cytosol
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: cytosol.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0015630
label: microtubule cytoskeleton
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: microtubule cytoskeleton.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0030496
label: midbody
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0000421
label: autophagosome membrane
evidence_type: IDA
original_reference_id: PMID:17984323
qualifier: located_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome membrane.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0000776
label: kinetochore
evidence_type: IDA
original_reference_id: PMID:26040712
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0000815
label: ESCRT III complex
evidence_type: NAS
original_reference_id: PMID:36107470
qualifier: part_of
review:
summary: 'Supported core CHMP5 ESCRT-III complex membership: ESCRT III complex.'
action: ACCEPT
reason: CHMP5 is an ESCRT-III-family component whose best-supported role is regulatory participation in ESCRT/MVB sorting
and VPS4-LIP5-mediated ESCRT-III recycling.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:18385515
supporting_text: These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
- reference_id: PMID:23105106
supporting_text: promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
- reference_id: PMID:23105106
supporting_text: formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing
ESCRT-III protein and CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly
of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
- term:
id: GO:0001778
label: plasma membrane repair
evidence_type: IDA
original_reference_id: PMID:24482116
qualifier: involved_in
review:
summary: Plausible non-core CHMP5 plasma membrane repair ESCRT context.
action: KEEP_AS_NON_CORE
reason: Plasma membrane repair is a valid ESCRT pathway output, but the available CHMP5-specific evidence does not make
it the core CHMP5 function.
supported_by:
- reference_id: PMID:24482116
supporting_text: ESCRT proteins were recruited within seconds to plasma membrane wounds
- reference_id: PMID:24482116
supporting_text: repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005643
label: nuclear pore
evidence_type: IDA
original_reference_id: PMID:26040713
qualifier: part_of
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear pore.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005765
label: lysosomal membrane
evidence_type: IDA
original_reference_id: PMID:17984323
qualifier: located_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: lysosomal membrane.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0005828
label: kinetochore microtubule
evidence_type: IDA
original_reference_id: PMID:26040712
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: kinetochore microtubule.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0005886
label: plasma membrane
evidence_type: IDA
original_reference_id: PMID:24878737
qualifier: located_in
review:
summary: Supported but non-core plasma membrane ESCRT context for CHMP5.
action: KEEP_AS_NON_CORE
reason: Plasma membrane localization in ESCRT/HIV or repair assays is a secondary pathway context and not the main CHMP5
proteostasis function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- reference_id: PMID:24482116
supporting_text: ESCRT proteins were recruited within seconds to plasma membrane wounds
- reference_id: PMID:24482116
supporting_text: repair of certain wounds is ensured by ESCRT-mediated extracellular shedding of wounded portions
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0006914
label: autophagy
evidence_type: IMP
original_reference_id: PMID:17984323
qualifier: involved_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagy.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0006997
label: nucleus organization
evidence_type: IMP
original_reference_id: PMID:20616062
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: nucleus organization.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0007080
label: mitotic metaphase chromosome alignment
evidence_type: IMP
original_reference_id: PMID:20616062
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: mitotic metaphase chromosome alignment.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0030496
label: midbody
evidence_type: IDA
original_reference_id: PMID:26040712
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0031468
label: nuclear membrane reassembly
evidence_type: IMP
original_reference_id: PMID:26040713
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT nuclear-envelope context for CHMP5: nuclear membrane reassembly.'
action: KEEP_AS_NON_CORE
reason: Nuclear envelope sealing/reassembly is a supported ESCRT-III pathway context, but CHMP5-specific evidence is centered
on MVB sorting and LIP5/VPS4-mediated ESCRT recycling.
supported_by:
- reference_id: PMID:26040712
supporting_text: ESCRT-III, VPS4 and spastin cooperate to coordinate nuclear envelope sealing and spindle disassembly
- reference_id: PMID:26040713
supporting_text: ESCRT-III controls nuclear envelope reformation
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0032585
label: multivesicular body membrane
evidence_type: IDA
original_reference_id: PMID:16554368
qualifier: located_in
review:
summary: 'Supported CHMP5 endosomal/MVB membrane context: multivesicular body membrane.'
action: ACCEPT
reason: CHMP5 is a peripheral ESCRT-III component that cycles between cytosol and endosomal ESCRT assemblies, so the endosome/MVB
membrane context is relevant to the core MVB sorting function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- term:
id: GO:0036258
label: multivesicular body assembly
evidence_type: NAS
original_reference_id: PMID:16505166
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body assembly.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0039702
label: viral budding via host ESCRT complex
evidence_type: IDA
original_reference_id: PMID:24878737
qualifier: involved_in
review:
summary: 'Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding via host
ESCRT complex.'
action: MARK_AS_OVER_ANNOTATED
reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5
is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
evidence_type: IDA
original_reference_id: PMID:17984323
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: ubiquitin-dependent protein catabolic process via
the multivesicular body sorting pathway.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0046761
label: viral budding from plasma membrane
evidence_type: IDA
original_reference_id: PMID:24878737
qualifier: involved_in
review:
summary: 'Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding from plasma
membrane.'
action: MARK_AS_OVER_ANNOTATED
reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5
is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0051469
label: vesicle fusion with vacuole
evidence_type: NAS
original_reference_id: PMID:16505166
qualifier: involved_in
review:
summary: vesicle fusion with vacuole is an over-specific/organellar endpoint for CHMP5 and should be generalized to late
endosome-to-lysosome transport.
action: MODIFY
reason: The evidence supports ESCRT/MVB cargo sorting and downstream degradative trafficking. It does not establish CHMP5
as a direct vesicle-fusion factor.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
proposed_replacement_terms:
- id: GO:1902774
label: late endosome to lysosome transport
- term:
id: GO:0061763
label: multivesicular body-lysosome fusion
evidence_type: NAS
original_reference_id: PMID:16505166
qualifier: involved_in
review:
summary: multivesicular body-lysosome fusion is an over-specific/organellar endpoint for CHMP5 and should be generalized
to late endosome-to-lysosome transport.
action: MODIFY
reason: The evidence supports ESCRT/MVB cargo sorting and downstream degradative trafficking. It does not establish CHMP5
as a direct vesicle-fusion factor.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
proposed_replacement_terms:
- id: GO:1902774
label: late endosome to lysosome transport
- term:
id: GO:0061952
label: midbody abscission
evidence_type: IMP
original_reference_id: PMID:20616062
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody abscission.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0071985
label: multivesicular body sorting pathway
evidence_type: IDA
original_reference_id: PMID:16554368
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0090148
label: membrane fission
evidence_type: NAS
original_reference_id: PMID:19234443
qualifier: involved_in
review:
summary: Supported ESCRT-pathway membrane-fission output for CHMP5.
action: ACCEPT
reason: Membrane fission is a core ESCRT-III pathway output. CHMP5 is best viewed as a regulatory ESCRT-III/LIP5-VPS4
component rather than the principal Snf7-like scission polymer, but the annotation is acceptable as pathway-level function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:18385515
supporting_text: These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
- reference_id: PMID:23105106
supporting_text: promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
- reference_id: PMID:23105106
supporting_text: formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing
ESCRT-III protein and CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly
of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
- term:
id: GO:0097352
label: autophagosome maturation
evidence_type: IMP
original_reference_id: PMID:17984323
qualifier: involved_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: autophagosome maturation.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:1901673
label: regulation of mitotic spindle assembly
evidence_type: IMP
original_reference_id: PMID:20616062
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of mitotic spindle assembly.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:1902774
label: late endosome to lysosome transport
evidence_type: IMP
original_reference_id: PMID:17984323
qualifier: involved_in
review:
summary: Supported CHMP5 endolysosomal degradation route annotation.
action: ACCEPT
reason: CHMP5-mediated MVB sorting supports delivery of cargo such as EGFR into the degradative endolysosomal route; this
term is an appropriate pathway endpoint for the MVB sorting function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:1904930
label: amphisome membrane
evidence_type: IDA
original_reference_id: PMID:17984323
qualifier: located_in
review:
summary: 'Plausible PN-relevant but non-core CHMP5 autophagy/endolysosomal context: amphisome membrane.'
action: KEEP_AS_NON_CORE
reason: Functional MVB/ESCRT activity supports autophagic clearance and infection-specific CHMP5 evidence exists, but
the cached annotations do not show CHMP5-specific autophagosome sealing/maturation as the core function.
supported_by:
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: PMID:17984323
supporting_text: functional MVBs are required to prevent accumulation of abnormal proteins
- reference_id: PMID:30061757
supporting_text: CHMP5-one of the IcsB targets and a component of the ESCRT-III complex-specifically affected S. flexneri
escape from host autophagy.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the cached CHMP5 GOA autophagy annotations mostly derive from ESCRT-complex context rather than CHMP5-specific
autophagosome sealing assays
- term:
id: GO:0030496
label: midbody
evidence_type: EXP
original_reference_id: PMID:17853893
qualifier: located_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: midbody.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0071222
label: cellular response to lipopolysaccharide
evidence_type: IMP
original_reference_id: PMID:27812135
qualifier: involved_in
review:
summary: cellular response to lipopolysaccharide is not established as a CHMP5 core response function.
action: MARK_AS_OVER_ANNOTATED
reason: PMID:27812135 supports CHMP5 as a NOD2-interacting protein and reports LPS/MDP induction context, but this is
better treated as interaction/regulatory context than an involved_in response annotation for CHMP5.
supported_by:
- reference_id: PMID:27812135
supporting_text: CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The NOD2/LPS/MDP annotations are not core CHMP5 function.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB
regulators in the assay
- term:
id: GO:0071225
label: cellular response to muramyl dipeptide
evidence_type: IMP
original_reference_id: PMID:27812135
qualifier: involved_in
review:
summary: cellular response to muramyl dipeptide is not established as a CHMP5 core response function.
action: MARK_AS_OVER_ANNOTATED
reason: PMID:27812135 supports CHMP5 as a NOD2-interacting protein and reports LPS/MDP induction context, but this is
better treated as interaction/regulatory context than an involved_in response annotation for CHMP5.
supported_by:
- reference_id: PMID:27812135
supporting_text: CHMP5ESCRTIII proteins are required for late MVB formation and their fusion with the lysosome
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The NOD2/LPS/MDP annotations are not core CHMP5 function.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: the study itself says these new interacting proteins did not appear to be major NOD2-dependent NF-kappaB
regulators in the assay
- term:
id: GO:0045296
label: cadherin binding
evidence_type: HDA
original_reference_id: PMID:25468996
qualifier: enables
review:
summary: Cadherin binding from high-throughput proteomics is not informative for CHMP5 function.
action: MARK_AS_OVER_ANNOTATED
reason: The cadherin-binding annotation is from broad affinity proteomics and does not connect to the supported ESCRT/MVB/LIP5-VPS4
role of CHMP5.
supported_by:
- reference_id: PMID:25468996
supporting_text: E-cadherin interactome complexity and robustness resolved by quantitative proteomics
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0036258
label: multivesicular body assembly
evidence_type: NAS
original_reference_id: PMID:20588296
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body assembly.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:1904903
label: ESCRT III complex disassembly
evidence_type: NAS
original_reference_id: PMID:20588296
qualifier: involved_in
review:
summary: Supported core CHMP5 role in ESCRT-III complex disassembly/recycling.
action: ACCEPT
reason: The strongest CHMP5-specific mechanism is binding LIP5/VTA1 and contributing to VPS4 engagement/activation on
ESCRT-III assemblies, making ESCRT-III disassembly a core mechanistic process.
supported_by:
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:18385515
supporting_text: These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
- reference_id: PMID:23105106
supporting_text: promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
- reference_id: PMID:23105106
supporting_text: formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing
ESCRT-III protein and CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly
of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex
III (ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these
processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:18385515
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:23105106
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:15644320
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005829
label: cytosol
evidence_type: IDA
original_reference_id: PMID:15644320
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: cytosol.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0046755
label: viral budding
evidence_type: IMP
original_reference_id: PMID:15644320
qualifier: involved_in
review:
summary: 'Viral budding is not a core CHMP5 cellular function and is likely over-annotated here: viral budding.'
action: MARK_AS_OVER_ANNOTATED
reason: The key CHMP5/LIP5 study found CHMP5 depletion increased infectious HIV-1 release and concluded that only LIP5
is required for HIV release, so viral-budding annotations should not be treated as CHMP5 core function.
supported_by:
- reference_id: PMID:15644320
supporting_text: CHMP5 depletion results in an increase in the release of infectious HIV-1 particles
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting, whereas only LIP5 is required for HIV release.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0071985
label: multivesicular body sorting pathway
evidence_type: IMP
original_reference_id: PMID:15644320
qualifier: involved_in
review:
summary: 'Supported core CHMP5 MVB/endolysosomal sorting annotation: multivesicular body sorting pathway.'
action: ACCEPT
reason: CHMP5 depletion impairs EGFR degradation and CHMP5-LIP5/VTA1-VPS4 biology places it in the ESCRT machinery required
for MVB cargo sorting and downstream lysosomal degradation.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that
follows MVB sorting.'
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
- term:
id: GO:0010824
label: regulation of centrosome duplication
evidence_type: IMP
original_reference_id: PMID:20616062
qualifier: involved_in
review:
summary: 'Plausible non-core ESCRT cell-cycle/centrosome context for CHMP5: regulation of centrosome duplication.'
action: KEEP_AS_NON_CORE
reason: CHMP5 and other ESCRT-III/VPS4 proteins have reported cell-cycle and abscission phenotypes, but these are secondary
to the MVB sorting and ESCRT recycling function in the proteostasis review context.
supported_by:
- reference_id: PMID:20616062
supporting_text: depletion of VPS4A, VPS4B, or any of the 11 different human ESCRT-III (CHMP) proteins inhibited abscission
- reference_id: PMID:20616062
supporting_text: producing multipolar spindles (most ESCRT-III/VPS4 proteins) or monopolar spindles (CHMP2A or CHMP5)
- reference_id: PMID:20616062
supporting_text: ESCRT-III/VPS4 proteins function at centrosomes to help regulate their maintenance or proliferation
and then at midbodies during abscission
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: Secondary ESCRT contexts should generally be kept as non-core.
- term:
id: GO:0070062
label: extracellular exosome
evidence_type: HDA
original_reference_id: PMID:23533145
qualifier: located_in
review:
summary: Extracellular exosome detection is retained as broad non-core location context.
action: KEEP_AS_NON_CORE
reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the
CHMP5 core cellular function.
supported_by:
- reference_id: PMID:23533145
supporting_text: In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
- reference_id: PMID:19056867
supporting_text: Large-scale proteomics and phosphoproteomics of urinary exosomes
- reference_id: PMID:20458337
supporting_text: MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome
biogenesis
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0070062
label: extracellular exosome
evidence_type: HDA
original_reference_id: PMID:19056867
qualifier: located_in
review:
summary: Extracellular exosome detection is retained as broad non-core location context.
action: KEEP_AS_NON_CORE
reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the
CHMP5 core cellular function.
supported_by:
- reference_id: PMID:23533145
supporting_text: In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
- reference_id: PMID:19056867
supporting_text: Large-scale proteomics and phosphoproteomics of urinary exosomes
- reference_id: PMID:20458337
supporting_text: MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome
biogenesis
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0070062
label: extracellular exosome
evidence_type: HDA
original_reference_id: PMID:20458337
qualifier: located_in
review:
summary: Extracellular exosome detection is retained as broad non-core location context.
action: KEEP_AS_NON_CORE
reason: High-throughput exosome proteomics can be compatible with ESCRT/exosome biology, but it does not establish the
CHMP5 core cellular function.
supported_by:
- reference_id: PMID:23533145
supporting_text: In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine
- reference_id: PMID:19056867
supporting_text: Large-scale proteomics and phosphoproteomics of urinary exosomes
- reference_id: PMID:20458337
supporting_text: MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome
biogenesis
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:21543490
qualifier: enables
review:
summary: Generic protein binding does not capture the specific CHMP5/LIP5/VPS4-ESCRT regulatory mechanism.
action: MARK_AS_OVER_ANNOTATED
reason: The interactions with LIP5/VTA1 and other ESCRT-associated proteins are biologically meaningful, but the GO term
protein binding is too generic to capture CHMP5 function.
supported_by:
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:23105106
supporting_text: the second LIP5 MIT module binds with unusually high affinity to a novel MIM element within the ESCRT-III
protein CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Over-annotated: generic protein binding, cadherin binding, viral budding as a CHMP5 function, and
LPS/MDP response terms inferred from induction or interaction context rather than a demonstrated CHMP5 response function.'
- term:
id: GO:0005829
label: cytosol
evidence_type: TAS
original_reference_id: Reactome:R-HSA-3159232
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: cytosol.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
- term:
id: GO:0005829
label: cytosol
evidence_type: TAS
original_reference_id: Reactome:R-HSA-917693
qualifier: located_in
review:
summary: 'True or plausible broad CHMP5 location: cytosol.'
action: KEEP_AS_NON_CORE
reason: CHMP5 is primarily cytosolic and can be detected in broad compartments, but broad locations do not define the
core function.
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: Cytoplasm, cytosol
- reference_id: PMID:15644320
supporting_text: We identify CHMP5 as a LIP5-binding protein and show that CHMP5 is primarily cytosolic.
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Non-core: cytosol/nucleus/exosome locations, midbody/cytokinesis, spindle/centrosome, nuclear envelope/pore
reassembly, plasma membrane repair, infection/autophagy contexts, and viral budding.'
references:
- id: GO_REF:0000002
title: Gene Ontology annotation through association of InterPro records with GO terms
findings: []
- id: GO_REF:0000033
title: Annotation inferences using phylogenetic trees
findings: []
- id: GO_REF:0000044
title: Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative
changes to GO terms applied by UniProt
findings: []
- id: GO_REF:0000052
title: Gene Ontology annotation based on curation of immunofluorescence data
findings: []
- id: GO_REF:0000107
title: Automatic transfer of experimentally verified manual GO annotation data to orthologs using Ensembl Compara
findings: []
- id: GO_REF:0000117
title: Electronic Gene Ontology annotations created by ARBA machine learning models
findings: []
- id: GO_REF:0000120
title: Combined Automated Annotation using Multiple IEA Methods
findings: []
- id: PMID:15644320
title: The role of LIP5 and CHMP5 in multivesicular body formation and HIV-1 budding in mammalian cells.
findings: []
- id: PMID:16505166
title: Recycling of ESCRTs by the AAA-ATPase Vps4 is regulated by a conserved VSL region in Vta1.
findings: []
- id: PMID:16554368
title: The ESCRT-III subunit hVps24 is required for degradation but not silencing of the epidermal growth factor receptor.
findings: []
- id: PMID:16730941
title: 'A systematic analysis of human CHMP protein interactions: additional MIT domain-containing proteins bind to multiple
components of the human ESCRT III complex.'
findings: []
- id: PMID:17711858
title: The MIT domain of UBPY constitutes a CHMP binding and endosomal localization signal required for efficient epidermal
growth factor receptor degradation.
findings: []
- id: PMID:17853893
title: Human ESCRT and ALIX proteins interact with proteins of the midbody and function in cytokinesis.
findings: []
- id: PMID:17984323
title: Functional multivesicular bodies are required for autophagic clearance of protein aggregates associated with neurodegenerative
disease.
findings: []
- id: PMID:18385515
title: Novel interactions of ESCRT-III with LIP5 and VPS4 and their implications for ESCRT-III disassembly.
findings: []
- id: PMID:19056867
title: Large-scale proteomics and phosphoproteomics of urinary exosomes.
findings: []
- id: PMID:19234443
title: Membrane scission by the ESCRT-III complex.
findings: []
- id: PMID:20458337
title: MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis.
findings: []
- id: PMID:20588296
title: 'Membrane budding and scission by the ESCRT machinery: it''s all in the neck.'
findings: []
- id: PMID:20616062
title: Human ESCRT-III and VPS4 proteins are required for centrosome and spindle maintenance.
findings: []
- id: PMID:21543490
title: Mechanism of inhibition of retrovirus release from cells by interferon-induced gene ISG15.
findings: []
- id: PMID:21988832
title: Toward an understanding of the protein interaction network of the human liver.
findings: []
- id: PMID:23105106
title: Interactions of the human LIP5 regulatory protein with endosomal sorting complexes required for transport.
findings: []
- id: PMID:23533145
title: In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine.
findings: []
- id: PMID:24482116
title: ESCRT machinery is required for plasma membrane repair.
findings: []
- id: PMID:24878737
title: Structure of cellular ESCRT-III spirals and their relationship to HIV budding.
findings: []
- id: PMID:25416956
title: A proteome-scale map of the human interactome network.
findings: []
- id: PMID:25468996
title: E-cadherin interactome complexity and robustness resolved by quantitative proteomics.
findings: []
- id: PMID:26040712
title: Spastin and ESCRT-III coordinate mitotic spindle disassembly and nuclear envelope sealing.
findings: []
- id: PMID:26040713
title: ESCRT-III controls nuclear envelope reformation.
findings: []
- id: PMID:26496610
title: A human interactome in three quantitative dimensions organized by stoichiometries and abundances.
findings: []
- id: PMID:27812135
title: Characterization and Genetic Analyses of New Genes Coding for NOD2 Interacting Proteins.
findings: []
- id: PMID:28514442
title: Architecture of the human interactome defines protein communities and disease networks.
findings: []
- id: PMID:32296183
title: A reference map of the human binary protein interactome.
findings: []
- id: PMID:33961781
title: Dual proteome-scale networks reveal cell-specific remodeling of the human interactome.
findings: []
- id: PMID:36107470
title: Comprehensive analysis of the human ESCRT-III-MIT domain interactome reveals new cofactors for cytokinetic abscission.
findings: []
- id: Reactome:R-HSA-3159232
title: Recruitment Of HIV Virion Budding Machinery
findings: []
- id: Reactome:R-HSA-917693
title: ESCRT Disassembly
findings: []
- id: UniProt:Q9NZZ3
title: UniProtKB entry for human CHMP5
findings:
- statement: UniProt describes CHMP5 as an ESCRT-III-associated component involved in MVB formation/sorting and cytosolic/endosome
membrane localization.
- id: PMID:30061757
title: "N(\u03B5)-fatty acylation of multiple membrane-associated proteins by Shigella IcsB effector to modulate host function."
findings:
- statement: Shigella IcsB modifies CHMP5 and CHMP5 knockout affects S. flexneri escape from host autophagy.
- id: file:human/CHMP5/CHMP5-notes.md
title: Local curation notes for CHMP5
findings:
- statement: Local synthesis identifies CHMP5-LIP5/VTA1-VPS4 regulation of ESCRT-III recycling plus MVB sorting as core,
with viral, nuclear-envelope, cytokinesis, repair, NOD2, and infection/autophagy contexts treated as secondary or over-annotated
where appropriate.
core_functions:
- description: CHMP5 is an ESCRT-III-associated regulatory component for endosomal multivesicular body sorting and ESCRT-III
recycling. Through a high-affinity CHMP5-LIP5/VTA1 interaction, CHMP5 helps assemble or tune LIP5/VPS4 activity on ESCRT-III
substrates, supporting MVB cargo sorting, ESCRT-III complex disassembly, and downstream lysosomal degradation of ubiquitinated/endocytosed
cargo relevant to proteostasis.
in_complex:
id: GO:0000815
label: ESCRT III complex
directly_involved_in:
- id: GO:0071985
label: multivesicular body sorting pathway
- id: GO:0036258
label: multivesicular body assembly
- id: GO:1904903
label: ESCRT III complex disassembly
- id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
- id: GO:1902774
label: late endosome to lysosome transport
locations:
- id: GO:0010008
label: endosome membrane
- id: GO:0032585
label: multivesicular body membrane
supported_by:
- reference_id: UniProt:Q9NZZ3
supporting_text: involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs
- reference_id: PMID:15644320
supporting_text: both LIP5 and CHMP5 function in MVB sorting
- reference_id: PMID:15644320
supporting_text: Depletion of CHMP5 by siRNA does not affect the distribution or morphology of early endosomes, lysosomes,
or Golgi but does result in reduced degradation of the EGFR
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Core: ESCRT-III complex membership, MVB sorting/assembly, ubiquitin-dependent cargo degradation through
MVB sorting, ESCRT-III disassembly/recycling via LIP5/VTA1 and VPS4, and the endolysosomal degradation route that follows
MVB sorting.'
- reference_id: PMID:18385515
supporting_text: LIP5 binds preferentially to soluble CHMP5
- reference_id: PMID:18385515
supporting_text: These studies point to a role for direct binding between LIP5 and ESCRT-III proteins
- reference_id: PMID:23105106
supporting_text: promoting assembly of active VPS4 enzymes on the polymeric ESCRT-III substrate
- reference_id: PMID:23105106
supporting_text: formation of stable VPS4 complexes with both LIP5 and CHMP5 requires LIP5 to bind both a MIM1-containing
ESCRT-III protein and CHMP5
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: The mechanistic refinement is that CHMP5 binds LIP5/VTA1 and helps regulate VPS4 activation/disassembly
of ESCRT-III rather than acting as a CHMP4/Snf7-like primary filament/scission subunit.
- reference_id: UniProt:Q9NZZ3
supporting_text: Probable peripherally associated component of the endosomal sorting required for transport complex III
(ESCRT-III)
- reference_id: PMID:16730941
supporting_text: known components of the human ESCRT III complex
- reference_id: PMID:23105106
supporting_text: the ESCRT-III and VPS4 ATPase complexes catalyze the membrane fission events associated with these processes
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: CHMP5 (UniProt Q9NZZ3) is a SNF7/ESCRT-III family protein best treated as an ESCRT-III regulatory component
for endosomal MVB sorting and VPS4/LIP5-mediated ESCRT-III recycling.
- reference_id: UniProt:Q9NZZ3
supporting_text: enabling degradation of membrane proteins, such as stimulated growth factor receptors
- reference_id: PMID:15644320
supporting_text: reduced degradation of the EGFR similar to silencing of LIP5
- reference_id: PMID:17984323
supporting_text: Functional multivesicular bodies are required for autophagic clearance
- reference_id: file:human/CHMP5/CHMP5-notes.md
supporting_text: 'Proteostasis-network context: CHMP5 supports endolysosomal degradation through ESCRT/MVB sorting'
proposed_new_terms: []
suggested_questions:
- question: Can endogenous CHMP5 depletion/rescue separate its direct LIP5/VTA1-VPS4 regulatory role from pathway-level ESCRT-III
membrane-fission annotations?
- question: Which CHMP5-specific autophagy annotations are supported by direct autophagosome closure or maturation assays
rather than by ESCRT complex membership?
- question: Should viral-budding annotations for CHMP5 be replaced by a regulatory or non-core context, given evidence that
CHMP5 depletion increases HIV-1 release while LIP5 is required?
suggested_experiments:
- description: Perform acute endogenous CHMP5 depletion and rescue with wild-type, LIP5-binding-defective, and ESCRT-tail
mutant CHMP5 while measuring EGFR degradation, MVB ILV cargo sorting, and VPS4 recruitment/disassembly dynamics.
hypothesis: CHMP5 rescue of MVB cargo degradation will require its LIP5/VTA1 interaction and will primarily affect VPS4-mediated
ESCRT-III recycling rather than initial cargo recognition.
- description: Test CHMP5 recruitment and requirement in starvation autophagy, mitophagy, and xenophagy assays using direct
reporters for unsealed autophagosomes and autolysosome formation.
hypothesis: CHMP5 will contribute to autophagic clearance through endolysosomal/MVB function and pathogen-specific xenophagy
contexts, but may not be a general autophagosome sealing effector.
- description: Compare CHMP5 and LIP5 knockdown/rescue in HIV-1 budding assays while quantifying MVB cargo degradation in
parallel.
hypothesis: CHMP5 perturbation will distinguish MVB sorting from viral release, supporting curation of viral budding as
non-core or over-annotated for CHMP5.