VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and MVB12/UBAP-family partners. The best-supported cellular function is ESCRT-I-dependent endosomal sorting of ubiquitinated cargo into multivesicular bodies, with late-endosome/endosome-membrane localization and a secondary viral budding context. Current local evidence does not support transferring the VPS37A-specific phagophore-closure role to VPS37C as a core annotation.
| GO Term | Evidence | Action | Reason |
|---|---|---|---|
|
GO:0043162
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
Reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0000813
ESCRT I complex
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0006612
protein targeting to membrane
|
IBA
GO_REF:0000033 |
MODIFY |
Summary: protein targeting to membrane is too broad for VPS37C ESCRT-I function.
Reason: The supported process is ESCRT-I-dependent endosomal cargo sorting into the MVB pathway, not generic protein targeting.
Proposed replacements:
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
multivesicular body assembly
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0006623
protein targeting to vacuole
|
IBA
GO_REF:0000033 |
MODIFY |
Summary: protein targeting to vacuole is too broad for VPS37C ESCRT-I function.
Reason: The supported process is ESCRT-I-dependent endosomal cargo sorting into the MVB pathway, not generic protein targeting.
Proposed replacements:
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
multivesicular body assembly
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0000813
ESCRT I complex
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0016236
macroautophagy
|
IEA
GO_REF:0000117 |
MARK AS OVER ANNOTATED |
Summary: Macroautophagy is over-annotated for VPS37C.
Reason: The accessible ESCRT autophagy evidence is broad or VPS37A-specific; there is not enough direct evidence to make VPS37C a phagophore-closure/autophagosome assembly factor.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:20588296
viral budding, cytokinesis and, probably, autophagy
PMID:20588296
direct neck closure reaction in autophagy
PMID:31519728
identify the ESCRT-I subunit VPS37A as a critical component
PMID:31519728
required for autophagosome completion
|
|
GO:0031902
late endosome membrane
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: late endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
|
GO:0036258
multivesicular body assembly
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
Reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0039702
viral budding via host ESCRT complex
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Viral budding via host ESCRT complex is supported as a secondary context but is not the core VPS37C proteostasis function.
Reason: VPS37C can support ESCRT-I-dependent viral budding, but the core cellular role is endosomal ESCRT-I cargo sorting.
Supporting Evidence:
PMID:15509564
VPS37C is recruited to the plasma membrane
PMID:15509564
direct fusion of VPS37C to HIV-1 Gag
PMID:15509564
inhibited by VPS37C depletion
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
PMID:20588296
viral budding, cytokinesis and, probably, autophagy
|
|
GO:0048306
calcium-dependent protein binding
|
IEA
GO_REF:0000117 |
KEEP AS NON CORE |
Summary: Calcium-dependent protein binding is supported but secondary.
Reason: VPS37C participates in an ALG-2/ALIX/ESCRT-I calcium-dependent ternary-complex context, but this is not the core VPS37C proteostasis function.
Supporting Evidence:
PMID:23924735
VPS37B and VPS37C appeared to interact with ALG-2
PMID:23924735
adaptor protein that bridges ALIX and ESCRT-I
|
|
GO:0005515
protein binding
|
IPI
PMID:17853893 Human ESCRT and ALIX proteins interact with proteins of the ... |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
file:human/VPS37C/VPS37C-notes.md
Generic `protein binding` rows are over-annotated
|
|
GO:0005515
protein binding
|
IPI
PMID:25416956 A proteome-scale map of the human interactome network. |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
file:human/VPS37C/VPS37C-notes.md
Generic `protein binding` rows are over-annotated
|
|
GO:0005515
protein binding
|
IPI
PMID:31515488 Extensive disruption of protein interactions by genetic vari... |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
file:human/VPS37C/VPS37C-notes.md
Generic `protein binding` rows are over-annotated
|
|
GO:0005515
protein binding
|
IPI
PMID:32296183 A reference map of the human binary protein interactome. |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
file:human/VPS37C/VPS37C-notes.md
Generic `protein binding` rows are over-annotated
|
|
GO:0005515
protein binding
|
IPI
PMID:35271311 OpenCell: Endogenous tagging for the cartography of human ce... |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
file:human/VPS37C/VPS37C-notes.md
Generic `protein binding` rows are over-annotated
|
|
GO:0005654
nucleoplasm
|
IDA
GO_REF:0000052 |
KEEP AS NON CORE |
Summary: Nucleoplasm localization is not part of the core VPS37C ESCRT-I function.
Reason: The core supported localization is late endosome/endosome membrane; the nucleoplasm row comes from high-throughput localization mapping and should not drive the functional model.
Supporting Evidence:
file:human/VPS37C/VPS37C-notes.md
Extracellular exosome and nucleoplasm rows come from high-throughput localization/proteomics and should remain non-core
|
|
GO:0000813
ESCRT I complex
|
IPI
PMID:18005716 Identification of human MVB12 proteins as ESCRT-I subunits t... |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0000813
ESCRT I complex
|
IPI
PMID:21757351 UBAP1 is a component of an endosome-specific ESCRT-I complex... |
ACCEPT |
Summary: ESCRT-I complex membership is correct for VPS37C, but PMID:21757351 is not the strongest VPS37C-specific support.
Reason: The term is correct from VPS37C-specific and shared ESCRT-I evidence; however, PMID:21757351 specifically defines a UBAP1/VPS37A endosome-specific complex and says it does not contain VPS37C.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:21757351
contains VPS37A but not VPS37C
|
|
GO:0010008
endosome membrane
|
NAS
PMID:32424346 A helical assembly of human ESCRT-I scaffolds reverse-topolo... |
ACCEPT |
Summary: endosome membrane is correct for VPS37C, but PMID:32424346 is indirect for this isoform.
Reason: Endosome-membrane localization is supported by VPS37C-specific evidence; PMID:32424346 supports general ESCRT-I mechanism using a VPS37B-containing headpiece.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
PMID:32424346
comprising TSG101-VPS28-VPS37B-MVB12A
|
|
GO:0036258
multivesicular body assembly
|
NAS
PMID:32424346 A helical assembly of human ESCRT-I scaffolds reverse-topolo... |
ACCEPT |
Summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
Reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0043328
protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
|
NAS
PMID:32424346 A helical assembly of human ESCRT-I scaffolds reverse-topolo... |
ACCEPT |
Summary: protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
Reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0090148
membrane fission
|
NAS
PMID:32424346 A helical assembly of human ESCRT-I scaffolds reverse-topolo... |
MARK AS OVER ANNOTATED |
Summary: Membrane fission is a broad ESCRT-I mechanism annotation and is over-transferred for VPS37C as written.
Reason: The cited structural/autophagy work directly tested a VPS37B-containing headpiece and VPS28 interface mutants, not VPS37C; the safer VPS37C annotations are ESCRT-I complex and MVB sorting.
Proposed replacements:
ESCRT I complex
multivesicular body assembly
Supporting Evidence:
PMID:32424346
comprising TSG101-VPS28-VPS37B-MVB12A
PMID:32424346
ESCRT-I is not merely a bridging adaptor
PMID:15509564
functional component of mammalian ESCRT-I
|
|
GO:0016236
macroautophagy
|
TAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
MARK AS OVER ANNOTATED |
Summary: Macroautophagy is over-annotated for VPS37C.
Reason: The accessible ESCRT autophagy evidence is broad or VPS37A-specific; there is not enough direct evidence to make VPS37C a phagophore-closure/autophagosome assembly factor.
Proposed replacements:
ESCRT I complex
Supporting Evidence:
PMID:20588296
viral budding, cytokinesis and, probably, autophagy
PMID:20588296
direct neck closure reaction in autophagy
PMID:31519728
identify the ESCRT-I subunit VPS37A as a critical component
PMID:31519728
required for autophagosome completion
|
|
GO:0000813
ESCRT I complex
|
TAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0036258
multivesicular body assembly
|
TAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
ACCEPT |
Summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
Reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Required for the sorting of endocytic
file:human/VPS37C/VPS37C-uniprot.txt
ubiquitinated cargos into multivesicular bodies
PMID:15509564
required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular bodies
PMID:15509564
binds to another class E VPS factor, namely Hrs
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
|
|
GO:0039702
viral budding via host ESCRT complex
|
TAS
PMID:20588296 Membrane budding and scission by the ESCRT machinery: it's a... |
KEEP AS NON CORE |
Summary: Viral budding via host ESCRT complex is supported as a secondary context but is not the core VPS37C proteostasis function.
Reason: VPS37C can support ESCRT-I-dependent viral budding, but the core cellular role is endosomal ESCRT-I cargo sorting.
Supporting Evidence:
PMID:15509564
VPS37C is recruited to the plasma membrane
PMID:15509564
direct fusion of VPS37C to HIV-1 Gag
PMID:15509564
inhibited by VPS37C depletion
PMID:18005716
plays essential roles in HIV budding and endosomal protein sorting
PMID:20588296
viral budding, cytokinesis and, probably, autophagy
|
|
GO:0000813
ESCRT I complex
|
IDA
PMID:18005716 Identification of human MVB12 proteins as ESCRT-I subunits t... |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0005515
protein binding
|
IPI
PMID:23924735 VPS37 isoforms differentially modulate the ternary complex f... |
MARK AS OVER ANNOTATED |
Summary: Protein binding is too generic to represent VPS37C function.
Reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction contexts, not generic protein binding from interaction assays or screens.
Proposed replacements:
calcium-dependent protein binding
Supporting Evidence:
PMID:23924735
VPS37B and VPS37C appeared to interact with ALG-2
PMID:23924735
adaptor protein that bridges ALIX and ESCRT-I
|
|
GO:0048306
calcium-dependent protein binding
|
IPI
PMID:23924735 VPS37 isoforms differentially modulate the ternary complex f... |
KEEP AS NON CORE |
Summary: Calcium-dependent protein binding is supported but secondary.
Reason: VPS37C participates in an ALG-2/ALIX/ESCRT-I calcium-dependent ternary-complex context, but this is not the core VPS37C proteostasis function.
Supporting Evidence:
PMID:23924735
VPS37B and VPS37C appeared to interact with ALG-2
PMID:23924735
adaptor protein that bridges ALIX and ESCRT-I
|
|
GO:0070062
extracellular exosome
|
HDA
PMID:23533145 In-depth proteomic analyses of exosomes isolated from expres... |
KEEP AS NON CORE |
Summary: Extracellular exosome is a high-throughput proteomics/localization context and not a core VPS37C annotation.
Reason: Exosome detection is not the central VPS37C ESCRT-I endosomal sorting function.
Supporting Evidence:
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exosomes
PMID:23533145
In-depth proteomic analyses of exosomes
|
|
GO:0070062
extracellular exosome
|
HDA
PMID:19056867 Large-scale proteomics and phosphoproteomics of urinary exos... |
KEEP AS NON CORE |
Summary: Extracellular exosome is a high-throughput proteomics/localization context and not a core VPS37C annotation.
Reason: Exosome detection is not the central VPS37C ESCRT-I endosomal sorting function.
Supporting Evidence:
PMID:19056867
Large-scale proteomics and phosphoproteomics of urinary exosomes
PMID:23533145
In-depth proteomic analyses of exosomes
|
|
GO:0000813
ESCRT I complex
|
IDA
PMID:22405001 The UBAP1 subunit of ESCRT-I interacts with ubiquitin via a ... |
ACCEPT |
Summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
Reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Component of the ESCRT-I complex
file:human/VPS37C/VPS37C-uniprot.txt
which consists of TSG101, VPS28, a VPS37
file:human/VPS37C/VPS37C-uniprot.txt
Interacts with TSG101, VPS28, MVB12A and MVB12B
PMID:15509564
VPS37C can form a ternary complex with Tsg101 and VPS28
PMID:15509564
Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
PMID:18005716
All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
PMID:22405001
complex with Vps23/TSG101, VPS28, and VPS37
|
|
GO:0010008
endosome membrane
|
TAS
Reactome:R-HSA-184269 |
ACCEPT |
Summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
|
GO:0010008
endosome membrane
|
TAS
Reactome:R-HSA-3149434 |
ACCEPT |
Summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
|
GO:0010008
endosome membrane
|
TAS
Reactome:R-HSA-3159232 |
ACCEPT |
Summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
|
GO:0010008
endosome membrane
|
TAS
Reactome:R-HSA-917696 |
ACCEPT |
Summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
|
GO:0010008
endosome membrane
|
TAS
Reactome:R-HSA-917730 |
ACCEPT |
Summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
Reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT perturbation assays.
Supporting Evidence:
file:human/VPS37C/VPS37C-uniprot.txt
Late endosome membrane
file:human/VPS37C/VPS37C-uniprot.txt
Probably associates with membranes
PMID:15509564
VPS37C is recruited to aberrant endosomes
|
Q: Should VPS37C macroautophagy annotations be retired or kept non-core given that the direct phagophore-closure evidence is VPS37A-specific?
Suggested experts: GO autophagy editors, GO ESCRT curators
Q: Should generic VPS37C protein-binding annotations be replaced by ESCRT-I complex membership, calcium-dependent ALG-2 interaction context, and specific endosomal sorting terms?
Suggested experts: GO molecular function editors, UniProt curators
Experiment: Compare VPS37A, VPS37B, and VPS37C depletion/rescue in HT-LC3 autophagosome closure assays and parallel EGFR or tetherin MVB-sorting assays, using endogenous expression or matched rescue levels.
Hypothesis: VPS37A, but not necessarily VPS37C, is the VPS37 paralog specialized for phagophore closure.
Type: VPS37 paralog phagophore closure comparison
Experiment: Use VPS37C-specific knockout-rescue with quantitative cargo degradation and HIV-1 Gag recruitment/release readouts, controlling for VPS37A and VPS37B compensation.
Hypothesis: VPS37C contributes to a subset of ESCRT-I cargo-sorting or viral-budding contexts distinct from the UBAP1/VPS37A endosome-specific complex.
Type: VPS37C-specific MVB sorting assay
VPS37C is reviewed in the PN ESCRT-I branch. PN entries without PMIDs were used as context only. The direct phagophore-closure evidence in this ESCRT-I neighborhood is VPS37A-specific; for VPS37C the supported core is ESCRT-I membership, endosomal MVB cargo sorting, late-endosome/endosome-membrane localization, and secondary ESCRT-I viral budding context.
VPS37C is a VPS37-family ESCRT-I subunit. UniProt describes it as a "Component of the ESCRT-I complex" and says it is "Required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies" [file:human/VPS37C/VPS37C-uniprot.txt, "Component of the ESCRT-I complex"; file:human/VPS37C/VPS37C-uniprot.txt, "Required for the sorting of endocytic"]. UniProt also states that human ESCRT-I "consists of TSG101, VPS28, a VPS37 protein" and that VPS37C interacts with TSG101, VPS28, MVB12A, MVB12B, HGS, STAM2, and CEP55 [file:human/VPS37C/VPS37C-uniprot.txt, "which consists of TSG101, VPS28, a VPS37"; file:human/VPS37C/VPS37C-uniprot.txt, "Interacts with TSG101, VPS28, MVB12A and MVB12B"; file:human/VPS37C/VPS37C-uniprot.txt, "Interacts with HGS and STAM2"]. These support ESCRT-I complex and endosomal MVB sorting annotations.
The main VPS37C paper identifies it as a functional mammalian ESCRT-I component. Its abstract reports that VPS37C is a Tsg101-binding protein, that "VPS37C can form a ternary complex with Tsg101 and VPS28", that it binds Hrs, and that it is recruited to aberrant endosomes induced by Tsg101, Hrs, or dominant-negative VPS4 [PMID:15509564, "VPS37C can form a ternary complex with Tsg101 and VPS28"; PMID:15509564, "binds to another class E VPS factor, namely Hrs"; PMID:15509564, "VPS37C is recruited to aberrant endosomes"]. The same paper shows a direct viral budding context: VPS37C is recruited to the plasma membrane with HIV-1 Gag, Gag-VPS37C fusion bypasses the PTAP requirement, and engineered ESCRT-I-dependent virus budding is inhibited by VPS37C depletion [PMID:15509564, "VPS37C is recruited to the plasma membrane"; PMID:15509564, "direct fusion of VPS37C to HIV-1 Gag"; PMID:15509564, "inhibited by VPS37C depletion"]. Viral budding should be kept as a supported non-core context for this proteostasis review.
Human ESCRT-I composition papers support the shared complex architecture, but some should not be over-read as VPS37C-specific MVB evidence. PMID:18005716 says human ESCRT-I plays roles in HIV budding and endosomal sorting and that all ESCRT-I complexes contain TSG101, VPS28, and VPS37 [PMID:18005716, "plays essential roles in HIV budding and endosomal protein sorting"; PMID:18005716, "TSG101, VPS28, and VPS37"]. By contrast, the UBAP1 endosome-specific ESCRT-I paper says the UBAP1 complex "also contains VPS37A but not VPS37C" [PMID:21757351, "contains VPS37A but not VPS37C"]. Therefore PMID:21757351 is not used as direct support for VPS37C's core endosome-specific UBAP1 pathway, although the ESCRT-I complex term itself is supported by other references.
Structural ESCRT-I evidence supports the general mechanism but is not VPS37C-specific. PMID:32424346 determined the structure of a human ESCRT-I headpiece "comprising TSG101-VPS28-VPS37B-MVB12A" and found that ESCRT-I forms helical filaments with a scaffolding/mechanical role in reverse-topology scission [PMID:32424346, "comprising TSG101-VPS28-VPS37B-MVB12A"; PMID:32424346, "ESCRT-I is not merely a bridging adaptor"]. This supports the general ESCRT-I mechanism, but for VPS37C it should not be treated as direct evidence for autophagosome closure or a VPS37C-specific membrane-fission assay.
The macroautophagy rows should be treated cautiously. PMID:20588296 says ESCRT-III-mediated neck cleavage is crucial for MVBs, viral budding, cytokinesis, and "probably, autophagy", and explicitly notes that whether ESCRTs directly close autophagic necks remained unresolved [PMID:20588296, "viral budding, cytokinesis and, probably, autophagy"; PMID:20588296, "direct neck closure reaction in autophagy"]. The direct mammalian phagophore-closure paper identifies VPS37A, not VPS37C, as the VPS37-family ESCRT-I subunit needed for phagophore closure [PMID:31519728, "identify the ESCRT-I subunit VPS37A as a critical component"; PMID:31519728, "required for autophagosome completion"]. This argues against transferring an autophagosome assembly or macroautophagy core annotation to VPS37C without additional gene-specific evidence.
VPS37C has a secondary calcium-dependent ALIX/ALG-2 interaction context. PMID:23924735 reports that VPS37B and VPS37C interact with ALG-2 more strongly than TSG101 and that ALG-2 bridges ALIX and ESCRT-I [PMID:23924735, "VPS37B and VPS37C appeared to interact with ALG-2"; PMID:23924735, "adaptor protein that bridges ALIX and ESCRT-I"]. This supports keeping calcium-dependent protein binding as non-core rather than using generic protein binding as a molecular function.
Generic protein binding rows are over-annotated. The meaningful curation targets are ESCRT-I complex membership, MVB/endosomal sorting, late-endosome/endosome-membrane localization, and supported secondary ESCRT-I interaction contexts. Extracellular exosome and nucleoplasm rows come from high-throughput localization/proteomics and should remain non-core.
Falcon deep research was started for VPS37C on 2026-06-02 but timed out after 600 seconds and did not produce a usable VPS37C-deep-research-falcon.md report. The review therefore relies on the local UniProt, GOA, cached-publication, Reactome, and PN-context evidence summarized above.
*-deep-research*.md file found in this gene directory.Autophagosome closure maturation and lysosome fusion β Sealing of autophagophore membrane β ESCRT-I complex component. PN-node mapping: leaf=mappedβGO:0000813; sealing group=mappedβGO:0000045; class=context_only (GO:0016236). Projected: GO:0000045 (more_specific_than_existing_goa), GO:0000813 (already_in_goa_exact).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: A5D8V6
gene_symbol: VPS37C
product_type: PROTEIN
status: COMPLETE
taxon:
id: NCBITaxon:9606
label: Homo sapiens
description: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and MVB12/UBAP-family partners. The
best-supported cellular function is ESCRT-I-dependent endosomal sorting of ubiquitinated cargo into multivesicular bodies,
with late-endosome/endosome-membrane localization and a secondary viral budding context. Current local evidence does not
support transferring the VPS37A-specific phagophore-closure role to VPS37C as a core annotation.
existing_annotations:
- term:
id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway is supported as part
of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
action: ACCEPT
reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
additional_reference_ids: &id001
- PMID:15509564
- PMID:18005716
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id002
- &id028
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: Required for the sorting of endocytic
- &id029
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: ubiquitinated cargos into multivesicular bodies
- &id030
reference_id: PMID:15509564
supporting_text: required for the sorting of ubiquitinated transmembrane proteins into internal vesicles of multivesicular
bodies
- &id031
reference_id: PMID:15509564
supporting_text: binds to another class E VPS factor, namely Hrs
- &id032
reference_id: PMID:18005716
supporting_text: plays essential roles in HIV budding and endosomal protein sorting
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: &id003
- PMID:15509564
- PMID:18005716
- PMID:22405001
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id004
- &id008
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: Component of the ESCRT-I complex
- &id009
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: which consists of TSG101, VPS28, a VPS37
- &id010
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: Interacts with TSG101, VPS28, MVB12A and MVB12B
- &id011
reference_id: PMID:15509564
supporting_text: VPS37C can form a ternary complex with Tsg101 and VPS28
- &id012
reference_id: PMID:15509564
supporting_text: Thus, this study identifies VPS37C as a functional component of mammalian ESCRT-I
- &id026
reference_id: PMID:18005716
supporting_text: All ESCRT-I complexes contain three common subunits (TSG101, VPS28, and VPS37)
- &id027
reference_id: PMID:22405001
supporting_text: complex with Vps23/TSG101, VPS28, and VPS37
- term:
id: GO:0006612
label: protein targeting to membrane
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: protein targeting to membrane is too broad for VPS37C ESCRT-I function.
action: MODIFY
reason: The supported process is ESCRT-I-dependent endosomal cargo sorting into the MVB pathway, not generic protein targeting.
proposed_replacement_terms:
- id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
- id: GO:0036258
label: multivesicular body assembly
additional_reference_ids: *id001
supported_by: *id002
- term:
id: GO:0006623
label: protein targeting to vacuole
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: protein targeting to vacuole is too broad for VPS37C ESCRT-I function.
action: MODIFY
reason: The supported process is ESCRT-I-dependent endosomal cargo sorting into the MVB pathway, not generic protein targeting.
proposed_replacement_terms:
- id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
- id: GO:0036258
label: multivesicular body assembly
additional_reference_ids: *id001
supported_by: *id002
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: *id003
supported_by: *id004
- term:
id: GO:0016236
label: macroautophagy
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: Macroautophagy is over-annotated for VPS37C.
action: MARK_AS_OVER_ANNOTATED
reason: The accessible ESCRT autophagy evidence is broad or VPS37A-specific; there is not enough direct evidence to make
VPS37C a phagophore-closure/autophagosome assembly factor.
proposed_replacement_terms:
- id: GO:0000813
label: ESCRT I complex
additional_reference_ids: &id016
- PMID:20588296
- PMID:31519728
- PMID:32424346
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id017
- reference_id: PMID:20588296
supporting_text: viral budding, cytokinesis and, probably, autophagy
- reference_id: PMID:20588296
supporting_text: direct neck closure reaction in autophagy
- reference_id: PMID:31519728
supporting_text: identify the ESCRT-I subunit VPS37A as a critical component
- reference_id: PMID:31519728
supporting_text: required for autophagosome completion
- term:
id: GO:0031902
label: late endosome membrane
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: late endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: &id024
- PMID:15509564
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id025
- &id013
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: Late endosome membrane
- &id014
reference_id: file:human/VPS37C/VPS37C-uniprot.txt
supporting_text: Probably associates with membranes
- &id015
reference_id: PMID:15509564
supporting_text: VPS37C is recruited to aberrant endosomes
- term:
id: GO:0036258
label: multivesicular body assembly
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: involved_in
review:
summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
action: ACCEPT
reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
additional_reference_ids: *id001
supported_by: *id002
- 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 via host ESCRT complex is supported as a secondary context but is not the core VPS37C proteostasis
function.
action: KEEP_AS_NON_CORE
reason: VPS37C can support ESCRT-I-dependent viral budding, but the core cellular role is endosomal ESCRT-I cargo sorting.
additional_reference_ids: &id018
- PMID:15509564
- PMID:18005716
- PMID:20588296
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id019
- reference_id: PMID:15509564
supporting_text: VPS37C is recruited to the plasma membrane
- reference_id: PMID:15509564
supporting_text: direct fusion of VPS37C to HIV-1 Gag
- reference_id: PMID:15509564
supporting_text: inhibited by VPS37C depletion
- reference_id: PMID:18005716
supporting_text: plays essential roles in HIV budding and endosomal protein sorting
- reference_id: PMID:20588296
supporting_text: viral budding, cytokinesis and, probably, autophagy
- term:
id: GO:0048306
label: calcium-dependent protein binding
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: enables
review:
summary: Calcium-dependent protein binding is supported but secondary.
action: KEEP_AS_NON_CORE
reason: VPS37C participates in an ALG-2/ALIX/ESCRT-I calcium-dependent ternary-complex context, but this is not the core
VPS37C proteostasis function.
additional_reference_ids: &id020
- PMID:23924735
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id021
- reference_id: PMID:23924735
supporting_text: VPS37B and VPS37C appeared to interact with ALG-2
- reference_id: PMID:23924735
supporting_text: adaptor protein that bridges ALIX and ESCRT-I
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:17853893
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms: &id005
- id: GO:0000813
label: ESCRT I complex
additional_reference_ids: &id006
- PMID:15509564
- PMID:17853893
- PMID:25416956
- PMID:31515488
- PMID:32296183
- PMID:35271311
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id007
- reference_id: PMID:15509564
supporting_text: VPS37C can form a ternary complex with Tsg101 and VPS28
- reference_id: file:human/VPS37C/VPS37C-notes.md
supporting_text: Generic `protein binding` rows are over-annotated
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:25416956
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms: *id005
additional_reference_ids: *id006
supported_by: *id007
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:31515488
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms: *id005
additional_reference_ids: *id006
supported_by: *id007
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:32296183
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms: *id005
additional_reference_ids: *id006
supported_by: *id007
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:35271311
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms: *id005
additional_reference_ids: *id006
supported_by: *id007
- term:
id: GO:0005654
label: nucleoplasm
evidence_type: IDA
original_reference_id: GO_REF:0000052
qualifier: located_in
review:
summary: Nucleoplasm localization is not part of the core VPS37C ESCRT-I function.
action: KEEP_AS_NON_CORE
reason: The core supported localization is late endosome/endosome membrane; the nucleoplasm row comes from high-throughput
localization mapping and should not drive the functional model.
additional_reference_ids:
- file:human/VPS37C/VPS37C-notes.md
supported_by:
- reference_id: file:human/VPS37C/VPS37C-notes.md
supporting_text: Extracellular exosome and nucleoplasm rows come from high-throughput localization/proteomics and should
remain non-core
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IPI
original_reference_id: PMID:18005716
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: *id003
supported_by: *id004
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IPI
original_reference_id: PMID:21757351
qualifier: part_of
review:
summary: ESCRT-I complex membership is correct for VPS37C, but PMID:21757351 is not the strongest VPS37C-specific support.
action: ACCEPT
reason: The term is correct from VPS37C-specific and shared ESCRT-I evidence; however, PMID:21757351 specifically defines
a UBAP1/VPS37A endosome-specific complex and says it does not contain VPS37C.
additional_reference_ids:
- PMID:15509564
- PMID:18005716
- PMID:21757351
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by:
- *id008
- *id009
- *id010
- *id011
- *id012
- reference_id: PMID:21757351
supporting_text: contains VPS37A but not VPS37C
- term:
id: GO:0010008
label: endosome membrane
evidence_type: NAS
original_reference_id: PMID:32424346
qualifier: located_in
review:
summary: endosome membrane is correct for VPS37C, but PMID:32424346 is indirect for this isoform.
action: ACCEPT
reason: Endosome-membrane localization is supported by VPS37C-specific evidence; PMID:32424346 supports general ESCRT-I
mechanism using a VPS37B-containing headpiece.
additional_reference_ids:
- PMID:15509564
- PMID:32424346
- file:human/VPS37C/VPS37C-uniprot.txt
- file:human/VPS37C/VPS37C-notes.md
supported_by:
- *id013
- *id014
- *id015
- reference_id: PMID:32424346
supporting_text: comprising TSG101-VPS28-VPS37B-MVB12A
- term:
id: GO:0036258
label: multivesicular body assembly
evidence_type: NAS
original_reference_id: PMID:32424346
qualifier: involved_in
review:
summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
action: ACCEPT
reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
additional_reference_ids: *id001
supported_by: *id002
- term:
id: GO:0043328
label: protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular body
sorting pathway
evidence_type: NAS
original_reference_id: PMID:32424346
qualifier: involved_in
review:
summary: protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular
body sorting pathway is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
action: ACCEPT
reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
additional_reference_ids: *id001
supported_by: *id002
- term:
id: GO:0090148
label: membrane fission
evidence_type: NAS
original_reference_id: PMID:32424346
qualifier: involved_in
review:
summary: Membrane fission is a broad ESCRT-I mechanism annotation and is over-transferred for VPS37C as written.
action: MARK_AS_OVER_ANNOTATED
reason: The cited structural/autophagy work directly tested a VPS37B-containing headpiece and VPS28 interface mutants,
not VPS37C; the safer VPS37C annotations are ESCRT-I complex and MVB sorting.
proposed_replacement_terms:
- id: GO:0000813
label: ESCRT I complex
- id: GO:0036258
label: multivesicular body assembly
additional_reference_ids:
- PMID:32424346
- PMID:15509564
- file:human/VPS37C/VPS37C-notes.md
supported_by:
- reference_id: PMID:32424346
supporting_text: comprising TSG101-VPS28-VPS37B-MVB12A
- reference_id: PMID:32424346
supporting_text: ESCRT-I is not merely a bridging adaptor
- reference_id: PMID:15509564
supporting_text: functional component of mammalian ESCRT-I
- term:
id: GO:0016236
label: macroautophagy
evidence_type: TAS
original_reference_id: PMID:20588296
qualifier: involved_in
review:
summary: Macroautophagy is over-annotated for VPS37C.
action: MARK_AS_OVER_ANNOTATED
reason: The accessible ESCRT autophagy evidence is broad or VPS37A-specific; there is not enough direct evidence to make
VPS37C a phagophore-closure/autophagosome assembly factor.
proposed_replacement_terms:
- id: GO:0000813
label: ESCRT I complex
additional_reference_ids: *id016
supported_by: *id017
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: TAS
original_reference_id: PMID:20588296
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: *id003
supported_by: *id004
- term:
id: GO:0036258
label: multivesicular body assembly
evidence_type: TAS
original_reference_id: PMID:20588296
qualifier: involved_in
review:
summary: multivesicular body assembly is supported as part of the core VPS37C/ESCRT-I endosomal cargo-sorting role.
action: ACCEPT
reason: VPS37C/ESCRT-I supports ubiquitin-dependent endosomal cargo sorting into multivesicular bodies.
additional_reference_ids: *id001
supported_by: *id002
- term:
id: GO:0039702
label: viral budding via host ESCRT complex
evidence_type: TAS
original_reference_id: PMID:20588296
qualifier: involved_in
review:
summary: Viral budding via host ESCRT complex is supported as a secondary context but is not the core VPS37C proteostasis
function.
action: KEEP_AS_NON_CORE
reason: VPS37C can support ESCRT-I-dependent viral budding, but the core cellular role is endosomal ESCRT-I cargo sorting.
additional_reference_ids: *id018
supported_by: *id019
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IDA
original_reference_id: PMID:18005716
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: *id003
supported_by: *id004
- term:
id: GO:0005515
label: protein binding
evidence_type: IPI
original_reference_id: PMID:23924735
qualifier: enables
review:
summary: Protein binding is too generic to represent VPS37C function.
action: MARK_AS_OVER_ANNOTATED
reason: The informative annotations are ESCRT-I complex membership, endosomal MVB sorting, and specific ESCRT-I interaction
contexts, not generic protein binding from interaction assays or screens.
proposed_replacement_terms:
- id: GO:0048306
label: calcium-dependent protein binding
additional_reference_ids: *id020
supported_by: *id021
- term:
id: GO:0048306
label: calcium-dependent protein binding
evidence_type: IPI
original_reference_id: PMID:23924735
qualifier: enables
review:
summary: Calcium-dependent protein binding is supported but secondary.
action: KEEP_AS_NON_CORE
reason: VPS37C participates in an ALG-2/ALIX/ESCRT-I calcium-dependent ternary-complex context, but this is not the core
VPS37C proteostasis function.
additional_reference_ids: *id020
supported_by: *id021
- term:
id: GO:0070062
label: extracellular exosome
evidence_type: HDA
original_reference_id: PMID:23533145
qualifier: located_in
review:
summary: Extracellular exosome is a high-throughput proteomics/localization context and not a core VPS37C annotation.
action: KEEP_AS_NON_CORE
reason: Exosome detection is not the central VPS37C ESCRT-I endosomal sorting function.
additional_reference_ids: &id022
- PMID:19056867
- PMID:23533145
- file:human/VPS37C/VPS37C-notes.md
supported_by: &id023
- reference_id: PMID:19056867
supporting_text: Large-scale proteomics and phosphoproteomics of urinary exosomes
- reference_id: PMID:23533145
supporting_text: In-depth proteomic analyses of exosomes
- term:
id: GO:0070062
label: extracellular exosome
evidence_type: HDA
original_reference_id: PMID:19056867
qualifier: located_in
review:
summary: Extracellular exosome is a high-throughput proteomics/localization context and not a core VPS37C annotation.
action: KEEP_AS_NON_CORE
reason: Exosome detection is not the central VPS37C ESCRT-I endosomal sorting function.
additional_reference_ids: *id022
supported_by: *id023
- term:
id: GO:0000813
label: ESCRT I complex
evidence_type: IDA
original_reference_id: PMID:22405001
qualifier: part_of
review:
summary: ESCRT-I complex membership is a central VPS37C cellular-component annotation.
action: ACCEPT
reason: VPS37C is a VPS37-family ESCRT-I subunit that complexes with TSG101, VPS28, and fourth-subunit partners.
additional_reference_ids: *id003
supported_by: *id004
- term:
id: GO:0010008
label: endosome membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-184269
qualifier: located_in
review:
summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: *id024
supported_by: *id025
- term:
id: GO:0010008
label: endosome membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-3149434
qualifier: located_in
review:
summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: *id024
supported_by: *id025
- term:
id: GO:0010008
label: endosome membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-3159232
qualifier: located_in
review:
summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: *id024
supported_by: *id025
- term:
id: GO:0010008
label: endosome membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-917696
qualifier: located_in
review:
summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: *id024
supported_by: *id025
- term:
id: GO:0010008
label: endosome membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-917730
qualifier: located_in
review:
summary: endosome membrane localization is supported and relevant to VPS37C/ESCRT-I function.
action: ACCEPT
reason: VPS37C is a peripheral late-endosome/endosome-membrane ESCRT-I component recruited to aberrant endosomes in ESCRT
perturbation assays.
additional_reference_ids: *id024
supported_by: *id025
references:
- 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:0000117
title: Electronic Gene Ontology annotations created by ARBA machine learning models
findings: []
- id: PMID:17853893
title: Human ESCRT and ALIX proteins interact with proteins of the midbody and function in cytokinesis.
findings: []
- id: PMID:18005716
title: Identification of human MVB12 proteins as ESCRT-I subunits that function in HIV budding.
findings: []
- id: PMID:19056867
title: Large-scale proteomics and phosphoproteomics of urinary exosomes.
findings: []
- id: PMID:20588296
title: 'Membrane budding and scission by the ESCRT machinery: it''s all in the neck.'
findings: []
- id: PMID:21757351
title: UBAP1 is a component of an endosome-specific ESCRT-I complex that is essential for MVB sorting.
findings: []
- id: PMID:22405001
title: The UBAP1 subunit of ESCRT-I interacts with ubiquitin via a SOUBA domain.
findings: []
- id: PMID:23533145
title: In-depth proteomic analyses of exosomes isolated from expressed prostatic secretions in urine.
findings: []
- id: PMID:23924735
title: VPS37 isoforms differentially modulate the ternary complex formation of ALIX, ALG-2, and ESCRT-I.
findings: []
- id: PMID:25416956
title: A proteome-scale map of the human interactome network.
findings: []
- id: PMID:31515488
title: Extensive disruption of protein interactions by genetic variants across the allele frequency spectrum in human populations.
findings: []
- id: PMID:32296183
title: A reference map of the human binary protein interactome.
findings: []
- id: PMID:32424346
title: A helical assembly of human ESCRT-I scaffolds reverse-topology membrane scission.
findings: []
- id: PMID:35271311
title: 'OpenCell: Endogenous tagging for the cartography of human cellular organization.'
findings: []
- id: Reactome:R-HSA-184269
title: Monoubiquitinated N-myristoyl GAG polyprotein is targeted to the late endosomal vesicle membrane by the ESCRT-I complex
findings: []
- id: Reactome:R-HSA-3149434
title: Transport of GAG to the Plasma Membrane
findings: []
- id: Reactome:R-HSA-3159232
title: Recruitment Of HIV Virion Budding Machinery
findings: []
- id: Reactome:R-HSA-917696
title: Cargo Sequestration
findings: []
- id: Reactome:R-HSA-917730
title: Cargo Recognition And Sorting
findings: []
- id: PMID:15509564
title: Identification of human VPS37C, a component of endosomal sorting complex required for transport-I important for viral
budding.
findings: []
- id: PMID:31519728
title: VPS37A directs ESCRT recruitment for phagophore closure.
findings: []
- id: file:human/VPS37C/VPS37C-uniprot.txt
title: UniProtKB record for human VPS37C
findings: []
- id: file:human/VPS37C/VPS37C-notes.md
title: VPS37C review notes
findings: []
core_functions:
- description: VPS37C is a structural ESCRT-I subunit that helps organize TSG101-VPS28-VPS37-MVB12/UBAP-family complexes for
ubiquitin-dependent endosomal cargo sorting and MVB assembly.
directly_involved_in:
- id: GO:0043162
label: ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway
- id: GO:0036258
label: multivesicular body assembly
locations:
- id: GO:0010008
label: endosome membrane
- id: GO:0031902
label: late endosome membrane
in_complex:
id: GO:0000813
label: ESCRT I complex
supported_by:
- *id008
- *id009
- *id010
- *id011
- *id012
- *id026
- *id027
- *id028
- *id029
- *id030
- *id031
- *id032
- *id013
- *id014
- *id015
proposed_new_terms: []
suggested_questions:
- question: Should VPS37C macroautophagy annotations be retired or kept non-core given that the direct phagophore-closure
evidence is VPS37A-specific?
experts:
- GO autophagy editors
- GO ESCRT curators
- question: Should generic VPS37C protein-binding annotations be replaced by ESCRT-I complex membership, calcium-dependent
ALG-2 interaction context, and specific endosomal sorting terms?
experts:
- GO molecular function editors
- UniProt curators
suggested_experiments:
- experiment_type: VPS37 paralog phagophore closure comparison
hypothesis: VPS37A, but not necessarily VPS37C, is the VPS37 paralog specialized for phagophore closure.
description: Compare VPS37A, VPS37B, and VPS37C depletion/rescue in HT-LC3 autophagosome closure assays and parallel EGFR
or tetherin MVB-sorting assays, using endogenous expression or matched rescue levels.
- experiment_type: VPS37C-specific MVB sorting assay
hypothesis: VPS37C contributes to a subset of ESCRT-I cargo-sorting or viral-budding contexts distinct from the UBAP1/VPS37A
endosome-specific complex.
description: Use VPS37C-specific knockout-rescue with quantitative cargo degradation and HIV-1 Gag recruitment/release readouts,
controlling for VPS37A and VPS37B compensation.