EVC

UniProt ID: P57679
Organism: Homo sapiens
Review Status: COMPLETE
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Gene Description

EVC is a membrane-associated component of the EvC ciliary signaling complex. In association with EVC2, it occupies a specialized region of proximal ciliary membrane and promotes Hedgehog signaling downstream of Smoothened. This signaling contribution supports growth-plate organization and endochondral bone growth. Pathogenic human EVC variants cause Ellis–van Creveld syndrome, with skeletal, dental and cardiac abnormalities.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0001501 skeletal system development
TAS
PMID:10700184
Mutations in a new gene in Ellis-van Creveld syndrome and We...
KEEP AS NON CORE
Summary: Retain the human skeletal-development association as a downstream developmental context.
Reason: The PMID:10700184 target identity and accessible original abstract are verified: EVC variants segregate with the skeletal dysplasia, including short limbs, short ribs and polydactyly. This supports the broad developmental association but does not define an intrinsic molecular activity of EVC. The complete original body remained inaccessible; the nominal publisher PDF returned HTML. Retain this existing positive TAS context as non-core without inventing an embryonic skeletal assay or a particular step performed by the protein.
Supporting Evidence:
GO:0003416 endochondral bone growth
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Retain endochondral bone growth as a supported developmental consequence of ciliary signaling.
Reason: The actual mouse P57680 donor record is experimentally grounded in PMID:17660199. Its operative Methods/Results use Evc-null mice and native mouse chondrocytes/MEFs: shorter endochondral bones and altered growth-plate zones accompany reduced Ptch1/Gli1 responses, including impaired responses to Smoothened agonist purmorphamine. This establishes a positive signaling contribution in the growth plate, not bone-matrix synthesis or autonomous growth activity. The current term covers the increase in size or mass of endochondral bone. Conserved EVC signaling supports this developmental context, while the primary molecular role is in the ciliary signaling complex. Human assays were not performed in this mouse paper; the inference is retained without asserting functional equivalence of the separate shorter RefSeq products.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual mouse IMP17660199 and original growth-plate/signaling experiments support the conserved developmental context.
Supporting Evidence:
GO:0003416 endochondral bone growth
ISS
GO_REF:0000024
KEEP AS NON CORE
Summary: Retain endochondral bone growth as a supported developmental consequence of ciliary signaling.
Reason: The actual mouse P57680 donor record is experimentally grounded in PMID:17660199. Its operative Methods/Results use Evc-null mice and native mouse chondrocytes/MEFs: shorter endochondral bones and altered growth-plate zones accompany reduced Ptch1/Gli1 responses, including impaired responses to Smoothened agonist purmorphamine. This establishes a positive signaling contribution in the growth plate, not bone-matrix synthesis or autonomous growth activity. The current term covers the increase in size or mass of endochondral bone. Conserved EVC signaling supports this developmental context, while the primary molecular role is in the ciliary signaling complex. Human assays were not performed in this mouse paper; the inference is retained without asserting functional equivalence of the separate shorter RefSeq products.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual mouse IMP17660199 and original growth-plate/signaling experiments support the conserved developmental context.
Supporting Evidence:
GO:0005886 plasma membrane
IEA
GO_REF:0000044
MODIFY
Summary: Refine the correct broad plasma-membrane mapping to ciliary membrane.
Reason: SL-0039 maps correctly to plasma membrane. Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. GO:0060170 is the specialized portion of plasma membrane surrounding a cilium; the refinement preserves the source mapping while specifying the supported compartment.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB-SubCell:SL-0039 SUPPORTS TRANSFER
Correct broad membrane mapping; independent original and target-participant evidence supports ciliary membrane.
Proposed replacements: ciliary membrane
Supporting Evidence:
Reactome:R-HSA-5633051
file:human/EVC/EVC-uniprot.txt
GO:0005886 plasma membrane
ISS
GO_REF:0000024
MODIFY
Summary: Refine the mouse-supported plasma-membrane assertion to ciliary membrane.
Reason: Current P57680 carries experimental PMID:21356043 plasma-membrane evidence. Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. The membrane-specific localization is more informative than the parent location and does not imply all products or all cell types have identical distribution.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual EXP21356043 is the proximate donor source; its mouse construct and host boundaries were read.
Proposed replacements: ciliary membrane
Supporting Evidence:
Reactome:R-HSA-5633051
file:human/EVC/EVC-uniprot.txt
IDA
PMID:21356043
Evc2 is a positive modulator of Hedgehog signalling that int...
MODIFY
Summary: Refine the supported ciliary localization to ciliary membrane, while retaining the separate evidence-code query.
Reason: PMID:21356043 supports ciliary localization in mouse native cells and mouse Evc/Evc2 constructs. Its topology and coexpression experiments, together with the independent human Reactome participant and curated UniProt location, place the conserved membrane-associated role more precisely at the ciliary membrane (GO:0060170). This refinement agrees with the electronic cilium row and retains the positive biological conclusion; it does not reject the experiment. The human IDA attribution remains a separate probable source query because the inspected localization experiments use mouse proteins, while HEK293 is a host for mouse interaction fragments. No replacement evidence code, human assay or equivalence among the separate human products is asserted.
Proposed replacements: ciliary membrane
Supporting Evidence:
Reactome:R-HSA-5633051
file:human/EVC/EVC-uniprot.txt
IEA
GO_REF:0000120
MODIFY
Summary: The broad cilium mapping can be refined to the ciliary membrane.
Reason: The combined mouse/SL-0066 sources genuinely support cilia. Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. Current typed ontology places ciliary membrane within cilium and plasma membrane. The finer term is supported independently; neither generic ciliary staining nor the human host alone establishes membrane topology.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Current mouse IDA21356043 and actual original support ciliary localization.
UniProtKB-SubCell:SL-0066 SUPPORTS TRANSFER
Correct broad cilium mapping; source-specific membrane evidence supplies the refinement.
Proposed replacements: ciliary membrane
Supporting Evidence:
Reactome:R-HSA-5633051
file:human/EVC/EVC-uniprot.txt
GO:0007224 smoothened signaling pathway
IEA
GO_REF:0000002
ACCEPT
Summary: Retain Smoothened-pathway participation alongside the separately supported positive-regulation role.
Reason: InterPro IPR026501 is a verified EVC family match with the Smoothened-signaling mapping. Evc-null mouse cells have impaired Smoothened-agonist responses and reduced Hedgehog target-gene output in PMID:17660199. Localization and complex studies place EVC within the proximal ciliary signaling machinery; PMID:24582806 also reports signal-dependent association of the EVC–EVC2 complex with SMO. Together these support participation in the series of signals following SMO activation, as well as a positive effect on signaling. GO:0045880 is not an ancestry-equivalent replacement for GO:0007224, so the pathway assertion is retained rather than displaced. The complex-level interaction is not an isolated EVC–SMO binary-binding or EVC-specific adaptor assay, and the mechanistic constructs are mouse proteins.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
InterPro:IPR026501 SUPPORTS TRANSFER
The actual IPR026501 family match and GO mapping are concordant with Evc-specific pathway-response experiments and complex-level signaling evidence. Participation and positive regulation are both retained; no family-derived enzyme activity is inferred.
Supporting Evidence:
file:human/EVC/EVC-uniprot.txt
GO:0007517 muscle organ development
TAS
PMID:10700184
Mutations in a new gene in Ellis-van Creveld syndrome and We...
UNDECIDED
Summary: The muscle-organ development assertion cannot be resolved from the accessible source.
Reason: PMID:10700184 is the verified EVC disease-discovery paper. Its accessible abstract describes skeletal dysplasia and congenital cardiac malformations, but does not identify a muscle-organ development assay or explain the basis of this specific TAS term. The current GO definition concerns formation and maturation of a muscle organ; a cardiac malformation alone does not resolve that claim. The original full body remains unavailable after bounded publisher/repository searches, and a nominal PDF response is HTML. Preserve the source assertion as UNDECIDED rather than infer that the curator made an error from the abstract or substitute a different developmental process.
Supporting Evidence:
GO:0036064 ciliary basal body
IEA
GO_REF:0000107
ACCEPT
Summary: Retain basal-body localization with explicit ciliary-base and imaging-resolution limits.
Reason: Retain the conserved basal-body/ciliary-base localization. PMID:17660199 reports native mouse Evc staining at the distal basal body/transition-zone region using knockout controls, and PMID:21356043 reports native mouse ciliary-base localization. Curated human UniProt SUBCELLULAR LOCATION and the public HPA EVC record provide independent support: HPA016046 is classified as basal body in ASC52telo, serum-starved hTERT-RPE1 and RPTEC/TERT1 cells. The selected blue/red/green images support ciliary-base puncta but do not independently resolve a basal-body marker channel or incorporation into the microtubule array. The shared antigen matches the 992-, 991- and 535-residue RefSeq products, so the human staining is not product-specific. Nearby EvC-zone membrane localization does not negate this bounded basal-body association; no basal-body assembly or scaffold activity is inferred. The source guide gives the public image and antibody locators; GO_REF:0000052 describes the method, not these target-specific observations.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual IDA17660199 ciliary-base microscopy remains positive; independent human HPA provides corroboration with defined resolution/product limits.
Supporting Evidence:
file:human/EVC/EVC-uniprot.txt
file:human/EVC/EVC-source-guide.md
GO:0036064 ciliary basal body
ISS
GO_REF:0000024
ACCEPT
Summary: Retain basal-body localization with explicit ciliary-base and imaging-resolution limits.
Reason: Retain the conserved basal-body/ciliary-base localization. PMID:17660199 reports native mouse Evc staining at the distal basal body/transition-zone region using knockout controls, and PMID:21356043 reports native mouse ciliary-base localization. Curated human UniProt SUBCELLULAR LOCATION and the public HPA EVC record provide independent support: HPA016046 is classified as basal body in ASC52telo, serum-starved hTERT-RPE1 and RPTEC/TERT1 cells. The selected blue/red/green images support ciliary-base puncta but do not independently resolve a basal-body marker channel or incorporation into the microtubule array. The shared antigen matches the 992-, 991- and 535-residue RefSeq products, so the human staining is not product-specific. Nearby EvC-zone membrane localization does not negate this bounded basal-body association; no basal-body assembly or scaffold activity is inferred. The source guide gives the public image and antibody locators; GO_REF:0000052 describes the method, not these target-specific observations.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual IDA17660199 ciliary-base microscopy remains positive; independent human HPA provides corroboration with defined resolution/product limits.
Supporting Evidence:
file:human/EVC/EVC-uniprot.txt
file:human/EVC/EVC-source-guide.md
GO:0045880 positive regulation of smoothened signaling pathway
IEA
GO_REF:0000107
ACCEPT
Summary: EVC is a positive regulator of Smoothened-dependent signaling.
Reason: The actual mouse P57680 donor record is experimentally grounded in PMID:17660199. Its operative Methods/Results use Evc-null mice and native mouse chondrocytes/MEFs: shorter endochondral bones and altered growth-plate zones accompany reduced Ptch1/Gli1 responses, including impaired responses to Smoothened agonist purmorphamine. This establishes a positive signaling contribution in the growth plate, not bone-matrix synthesis or autonomous growth activity. In the actual experiment Ihh expression is retained while downstream pathway readouts and agonist responses are impaired, supporting a positive signaling role rather than simply an association with short limbs. This conserved gene-level inference does not identify EVC as the receptor, establish a specific catalytic activity, or demonstrate identical function of untested human products.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Current mouse IMP17660199 and actual Evc-null agonist/readout experiments support positive regulation.
Supporting Evidence:
GO:0045880 positive regulation of smoothened signaling pathway
ISS
GO_REF:0000024
ACCEPT
Summary: EVC is a positive regulator of Smoothened-dependent signaling.
Reason: The actual mouse P57680 donor record is experimentally grounded in PMID:17660199. Its operative Methods/Results use Evc-null mice and native mouse chondrocytes/MEFs: shorter endochondral bones and altered growth-plate zones accompany reduced Ptch1/Gli1 responses, including impaired responses to Smoothened agonist purmorphamine. This establishes a positive signaling contribution in the growth plate, not bone-matrix synthesis or autonomous growth activity. In the actual experiment Ihh expression is retained while downstream pathway readouts and agonist responses are impaired, supporting a positive signaling role rather than simply an association with short limbs. This conserved gene-level inference does not identify EVC as the receptor, establish a specific catalytic activity, or demonstrate identical function of untested human products.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Current mouse IMP17660199 and actual Evc-null agonist/readout experiments support positive regulation.
Supporting Evidence:
GO:0051216 cartilage development
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Retain cartilage development as a bounded downstream context, using independent functional evidence.
Reason: The current rat G3V706 donor assertion is IEP PMID:15278943. Its verified abstract reports Evc mRNA/protein distribution in prehypertrophic and hypertrophic growth-plate chondrocytes; operative full Methods/Results remain unread. Expression alone would not establish participation in cartilage development, and no incorrect-gene or curator-error conclusion is drawn. Independently, actual mouse PMID:17660199 growth-plate histology, spatial Gli1/Ptch1 responses and chondrocyte/MEF Smoothened-agonist experiments connect Evc’s signaling work to endochondral cartilage progression. That supports this existing broad developmental context as non-core, while the rat source alone remains limited. It does not assign cartilage-matrix synthesis or a human cartilage-development assay.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:G3V706 UNRESOLVED
Rat identity and IEP15278943 source verified; abstract expression scope only, original body unread. Independent mouse signaling/growth-plate experiments support the retained non-core context.
Supporting Evidence:
GO:0060170 ciliary membrane
IBA
GO_REF:0000033
ACCEPT
Summary: Retain the experimentally grounded PAINT ciliary-membrane assertion.
Reason: In the actual PTHR16795 tree, human P57679 leaf PTN002497663 descends from PTN000423571. The ungapped target MSA sequence is exactly the current 992-aa sequence. Three positive IBD records and no target-path NOT were found; the ciliary-membrane and plasma-membrane-complex IBDs are at PTN000423571, grounded by mouse Evc and Evc2 experimental annotations. This is an ancestral placement, not a donor-count or pairwise-similarity argument. Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. No target-specific loss of this localization was established; the distinct external RefSeq records were not treated as equivalent functional products.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
PANTHER:PTN000423571 SUPPORTS TRANSFER
Actual ciliary-membrane IBD lies on the exact target ancestry; original mouse complex/localization evidence corroborates the conserved placement.
Supporting Evidence:
GO_REF:0000033
Reactome:R-HSA-5633051
GO:0060170 ciliary membrane
IEA
GO_REF:0000120
ACCEPT
Summary: The combined ortholog and subcellular mapping supports ciliary membrane.
Reason: SL-0305 explicitly maps to GO:0060170; current mouse P57680 has IDA24582806 for the same location. Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. Preserve the distinction between mouse original assays and the current human model.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual IDA24582806 source is mouse EVC/EVC2 localization.
UniProtKB-SubCell:SL-0305 SUPPORTS TRANSFER
Current exact ciliary-membrane mapping verified.
Supporting Evidence:
Reactome:R-HSA-5633051
GO:0060170 ciliary membrane
TAS
Reactome:R-HSA-5633051
ACCEPT
Summary: The Reactome EVC participant has its own human ciliary-membrane location.
Reason: Actual PMID:21356043 localization/topology experiments use mouse Evc/Evc2 constructs and native mouse cells. Coexpression supports ciliary membrane localization and an intracellular Evc C terminus; human HEK293 is an expression host for mouse interaction fragments. PMID:24582806 independently places the mouse EVC–EVC2 subcomplex at a restricted proximal ciliary membrane zone. The current human Reactome chain R-HSA-5633051 β†’ EVC2:EVC 5633041 β†’ EVC 5633035 identifies P57679 itself, residues 1–992, with its own ciliary-membrane compartment. This is a human model informed by ortholog evidence, not a human-protein assay. Event 5633051 is assembly of EFCAB7:IQCE with EVC2:EVC. EVC is a constituent of the native modeled complex, not the catalyst of a neighboring reaction or the EFCAB7 adaptor. The underlying PMID:24582806 separates stable EVC–EVC2 and EFCAB7–IQCE subcomplexes; no obligatory fixed four-subunit stoichiometry or EVC scaffold MF is inferred.
Supporting Evidence:
Reactome:R-HSA-5633051
GO:0098797 plasma membrane protein complex
IBA
GO_REF:0000033
ACCEPT
Summary: Retain PAINT-supported membership in a plasma-membrane protein complex.
Reason: In the actual PTHR16795 tree, human P57679 leaf PTN002497663 descends from PTN000423571. The ungapped target MSA sequence is exactly the current 992-aa sequence. Three positive IBD records and no target-path NOT were found; the ciliary-membrane and plasma-membrane-complex IBDs are at PTN000423571, grounded by mouse Evc and Evc2 experimental annotations. This is an ancestral placement, not a donor-count or pairwise-similarity argument. Actual PMID:24582806 native mouse NIH/3T3 tandem-affinity purification/co-immunoprecipitation and fractionation distinguish stable EVC–EVC2 from EFCAB7–IQCE subcomplexes; reconstituted EvC constructs in human HEK293T are explicitly mouse. PMID:21356043 provides independent Evc–Evc2 interaction and ciliary-membrane targeting evidence. These support EVC as a constituent of a plasma-membrane protein complex, without transferring EFCAB7 adaptor function or assuming every preparation is a fixed tetramer. The existing complex term is suitable; no unverified EVC-specific GO complex identifier is introduced.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
PANTHER:PTN000423571 SUPPORTS TRANSFER
Actual complex IBD and exact target descent are supported by experimentally characterized mouse Evc/Evc2 complex biology.
Supporting Evidence:
GO_REF:0000033
Reactome:R-HSA-5633051
GO:0098797 plasma membrane protein complex
IEA
GO_REF:0000107
ACCEPT
Summary: Retain ortholog-supported plasma-membrane complex membership.
Reason: Current mouse P57680 has IDA24582806 for this term. Actual PMID:24582806 native mouse NIH/3T3 tandem-affinity purification/co-immunoprecipitation and fractionation distinguish stable EVC–EVC2 from EFCAB7–IQCE subcomplexes; reconstituted EvC constructs in human HEK293T are explicitly mouse. PMID:21356043 provides independent Evc–Evc2 interaction and ciliary-membrane targeting evidence. These support EVC as a constituent of a plasma-membrane protein complex, without transferring EFCAB7 adaptor function or assuming every preparation is a fixed tetramer. The current human Reactome EVC2:EVC complex contains P57679 itself in ciliary membrane, providing concordant modeled participant evidence.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:P57680 SUPPORTS TRANSFER
Actual mouse IDA24582806 source and operative original complex experiments support the conserved role.
Supporting Evidence:
Reactome:R-HSA-5633051

Core Functions

Participates in Smoothened-dependent Hedgehog signal transduction and promotes its output as part of the EVC2-associated complex in proximal ciliary membrane and the basal-body region. Evc-specific mouse perturbation and agonist responses establish the signaling contribution; localization studies and reported signal-dependent complex–SMO association place it within the ciliary pathway. Basal-body association is retained with light-microscopy spatial limits, without asserting incorporation into the microtubule array or a basal-body assembly activity. The individual biochemical step supplied by EVC remains unresolved.

Supporting Evidence:

References

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Suggested Questions for Experts

Q: What EVC-specific molecular step links activated Smoothened to downstream GLI regulation, independently of EVC2 association and EFCAB7–IQCE-dependent positioning?

Q: How do the mouse MEF findings in PMID:21356043β€”full-length Evc detected in cytoplasmic but not nuclear fractions, with Evc2 detected in bothβ€”relate to the independent human HPA016046 nucleoplasmic signal? Which cell, product or antibody-specificity differences explain the observations, and can spatially resolved human imaging distinguish basal-body association from adjacent ciliary membrane?

Q: Which of the separately recorded human products, NP_714928.1 (992 residues, matching P57679), NP_001293019.1 (991 residues) and NP_001293021.1 (535 residues), are expressed, incorporated into the EVC2-associated complex and competent for ciliary signaling?

Q: Is there a muscle-cell-autonomous developmental role for human EVC, distinct from congenital cardiac malformation and broader Hedgehog-dependent developmental effects?

Suggested Experiments

Experiment: In ciliated human cells, compare endogenous EVC loss with matched-expression rescue and interaction-guided EVC variants. Measure EVC2 association, ciliary localization and Smoothened accumulation alongside agonist-dependent GLI1/PTCH1 transcription and GLI processing or localization. Include a downstream GLI bypass control to distinguish pathway position from general cell dysfunction. Advance a specific scaffold, adaptor or catalytic model only after directly testing the proposed step.

Hypothesis: EVC has a signaling contribution that can be experimentally separated from its abundance, EVC2 association and ciliary localization.

Type: Genetic separation of function with localization, interaction and signaling assays

Experiment: Compare HPA016046 staining with endogenous EVC tagging in wild-type and EVC-null human ciliated cells. Resolve basal-body and ciliary-membrane markers separately. Test nuclear localization with fractionation controls and product-resolved detection, explicitly comparing with the mouse MEF result in PMID:21356043, which detected full-length Evc only in the cytoplasmic fraction. A negative result in those mouse cells does not settle the independent human HPA signal. Establish genetic specificity before assigning a nuclear mechanism or an ultrastructural basal-body position.

Hypothesis: Ciliary-base antibody staining may represent proximal membrane, basal-body association or a mixture of product-dependent locations.

Type: Genetic specificity controls and spatially resolved microscopy

Experiment: Establish endogenous transcripts and product-specific peptides before comparing the separately recorded 992-, 991- and 535-residue proteins. Test detected products at matched abundance for EVC2 association, proximal ciliary targeting and Hedgehog-responsive transcription, without assuming that an overexpression phenotype establishes physiological isoform function.

Hypothesis: The shorter human RefSeq products may differ in expression, complex incorporation or signaling competence despite sharing the HPA016046 antigen.

Type: Transcript and product-resolved proteomics with controlled functional rescue

πŸ“š Additional Documentation

Notes

(EVC-notes.md)

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Source Guide

(EVC-source-guide.md)

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πŸ“„ View Raw YAML

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