EDAR

UniProt ID: Q9UNE0
Organism: Homo sapiens
Review Status: COMPLETE
πŸ“ Provide Detailed Feedback

Gene Description

EDAR is a single-pass cell-surface receptor for the EDA-A1 form of ectodysplasin. Its extracellular region recognizes the ligand, while its intracellular death domain couples receptor activation to adaptor-dependent signaling, including NF-kappaB activation. This signaling helps organize the development of ectodermal appendages, including teeth, hair and sweat glands. Pathogenic EDAR variants cause hypohidrotic ectodermal dysplasia.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0004888 transmembrane signaling receptor activity
IBA
GO_REF:0000033
MODIFY
Summary: Conserved transmembrane receptor activity is more precisely cytokine receptor activity.
Reason: The literal GO:0004888 IBD at PANTHER:PTN004336494 is ancestral to the exact 448-residue human EDAR leaf PTN002486226 in PTHR12120. The target itself and EDA2R are legitimate experimental descendants, not circular support. Independent EDA-A1 binding and EDAR signal-transmission evidence support the narrower GO:0004896. GO:0005031 requires tumor necrosis factor itself; TNFR-superfamily membership does not establish that ligand specificity.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Failure modes: GRANULARITY MISMATCH
Sources checked:
PANTHER:PTN004336494 SUPPORTS TRANSFER
Literal IBD and complete target path verified; donor experimental grounding retained. Refinement concerns specificity, not an erroneous ancestral placement.
Proposed replacements: cytokine receptor activity
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0004888 transmembrane signaling receptor activity
IDA
PMID:11039935
Two-amino acid molecular switch in an epithelial morphogen t...
MODIFY
Summary: EDA-A1 recognition supports the cytokine-receptor subclass.
Reason: The verified abstract of PMID:11039935 directly distinguishes EDA-A1 binding EDAR from EDA-A2 binding EDA2R. The full original remains unavailable in this review; no organ-culture or construct details are reconstructed. Independent selected original evidence from PMID:11035039 establishes EDAR ligand recognition and signal transmission. These support GO:0004896 without denying the imported positive IDA or assigning untested equivalence to the two natural products.
Proposed replacements: cytokine receptor activity
Supporting Evidence:
GO:0004888 transmembrane signaling receptor activity
NAS
PMID:10431241
Mutations in the human homologue of mouse dl cause autosomal...
MODIFY
Summary: The historical receptor inference is corroborated by later ligand and signaling experiments.
Reason: PMID:10431241 identified human EDAR sequence and disease variants and proposed a receptor relationship; its Discussion explicitly left the EDAR–EDA ligand hypothesis for future testing. The NAS identity is retained. Later independent EDA-A1 binding and EDAR signaling in PMID:11039935 and PMID:11035039 support a gene-level refinement to cytokine receptor activity. The 1999 paper is not relabeled as a measured ligand assay.
Proposed replacements: cytokine receptor activity
GO:0005515 protein binding
IPI
PMID:11035039
The ectodermal dysplasia receptor activates the nuclear fact...
MODIFY
Summary: EDAR binds the EDA-A1 cytokine through its extracellular region.
Reason: The selected original Methods, Results and captions of PMID:11035039 support binding of soluble EDAR-Fc and secreted Myc-EDA-A1 with control reagents. The assay used conditioned media, not a homogeneous purified pair. The literal IntAct EDA–EDAR record and reference-sequence checks corroborate participant identity, while original construct coordinates and deposited feature annotations remain source-specific. EDA-A1 is an independently established cytokine; GO:0019955 captures the demonstrated ligand class without inferring a new downstream activity.
Proposed replacements: cytokine binding
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005515 protein binding
IPI
PMID:11039935
Two-amino acid molecular switch in an epithelial morphogen t...
MODIFY
Summary: The independently reported EDA-A1–EDAR interaction warrants cytokine binding.
Reason: PMID:11039935 explicitly reports selective binding of EDA-A1 to EDAR in its authentic abstract. The inaccessible full text limits assay and construct resolution but does not negate the positive curated IPI. Independent original evidence in PMID:11035039 and the controlled extracellular-domain screen in PMID:32822567 corroborate this pair. The narrower binding class follows EDA-A1 cytokine identity; the source accession is unchanged.
Proposed replacements: cytokine binding
GO:0005515 protein binding
IPI
PMID:27144394
RETRACTED: Functional Study of Ectodysplasin-A Mutations Cau...
REMOVE
Summary: The retracted study cannot supply reliable independent evidence for this source-specific binding assertion.
Reason: PMID:42308199 retracts PMID:27144394 after unresolved image concerns affecting its results and conclusions. The complete notice specifically identifies duplicated-looking lanes and discontinuity in Fig. 1C, the receptor-binding panel used for the EDA-A1–EDAR comparison. This removal rejects that retracted experimental support, not the biological interaction: independent positive EDA–EDAR rows remain and are refined using PMID:11035039, PMID:11039935 and PMID:32822567. The original PMID, partner Q92838-1 and every imported source field remain unchanged; the retracted reference is explicitly flagged as invalid.
Supporting Evidence:
GO:0005515 protein binding
IPI
PMID:32822567
A Human IgSF Cell-Surface Interactome Reveals a Complex Netw...
MODIFY
Summary: The extracellular-domain screen detects EDAR binding to the signaling receptor LILRB1.
Reason: PMID:32822567 Data S4 reports EDAR–LILRB1 in both bait/prey orientations, each with three measurements against a control; the two reported mean fold-over-background values are approximately 7.65 and 9.82. Data S1 identifies human EDAR residues 27–187 and LILRB1 residues 24–461; their library parent sequences match current official reference sequences. The control-normalized, bidirectional triplicate retest establishes a reproducible physical-binding observation within this avidity-enhanced extracellular-domain assay. LILRB1 is independently established as an inhibitory signaling receptor, so this positive pair supports GO:0005102 signaling receptor binding. Receptor agonism and an orthogonal SPR experiment are not requirements of that binding class. No EDAR entry was found in Data S5 SPR statistics; affinity and native physiological contact therefore remain unresolved. This evidence does not establish LILRB1 activation by EDAR, transfer its immune function, or identify a native signaling complex. The controlled screen is distinct from the specifically questioned binding panel in the retracted PMID:27144394.
Proposed replacements: signaling receptor binding
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005515 protein binding
IPI
PMID:32822567
A Human IgSF Cell-Surface Interactome Reveals a Complex Netw...
MODIFY
Summary: The same extracellular-domain screen independently confirms binding to the EDA cytokine.
Reason: PMID:32822567 Data S4 contains the EDA–EDAR pair in both orientations with triplicate measurements and mean fold-over-background values of approximately 2.93 and 12.61. Data S1 specifies EDAR residues 27–187 and EDA residues 63–391, with library parent sequences identical to the current reference sequences. The controlled positive assay and independently established EDA-A1 cytokine class support GO:0019955. The fusion-based screen does not establish natural processing of its EDA reagent, signaling potency or SPR validation for this pair.
Proposed replacements: cytokine binding
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005886 plasma membrane
IBA
GO_REF:0000033
ACCEPT
Summary: Conserved plasma-membrane localization is appropriate for EDAR signaling.
Reason: The GO:0005886 IBD at PANTHER:PTN000950406 lies on the verified EDAR target path. The literal donor set includes mouse Edar and human EDA2R, whose current records retain experimental plasma-membrane evidence. This inherited compartment agrees with EDAR extracellular ligand recognition and the target-specific plasma-membrane entity in Reactome. No inference depends on donor count or replacing EDAR with its paralog.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
PANTHER:PTN000950406 SUPPORTS TRANSFER
Literal IBD, target ancestry and donor experimental grounding verified; no target-specific loss is indicated.
Supporting Evidence:
Reactome:R-HSA-5669012
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005886 plasma membrane
IEA
GO_REF:0000107
ACCEPT
Summary: Mouse-to-human transfer of plasma-membrane localization is supported.
Reason: The declared mouse Edar donor Q9R187 retains a current MGI IDA plasma-membrane annotation to PMID:12629675. Its authentic abstract describes Edar protein localization during mouse salivary-gland development; the detailed original remains unavailable. That limitation does not establish a donor error. Independent human receptor evidence and target-resolved Reactome placement support the conserved cell-surface compartment.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
UniProtKB:Q9R187 SUPPORTS TRANSFER
Current donor plasma-membrane IDA to PMID:12629675 verified; mouse developmental context and abstract-only access explicit.
Supporting Evidence:
Reactome:R-HSA-5669012
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-5669012
ACCEPT
Summary: The ligand-binding reaction places EDAR itself at the plasma membrane.
Reason: The saved Reactome R-HSA-5669012 reaction joins to entity 5669001, explicitly UniProt Q9UNE0 residues 27–448 in GO:0005886. The same target occurs in the EDA:EDAR product complex. This is an exact target-entity and compartment join, not a transfer from another reaction participant or an assay of every splice product.
Supporting Evidence:
Reactome:R-HSA-5669012
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0005886 plasma membrane
TAS
Reactome:R-HSA-5675656
ACCEPT
Summary: Adaptor recruitment retains EDAR in the plasma-membrane receptor complex.
Reason: Reactome R-HSA-5675656 contains EDA:EDAR and its EDARADD-bound product. Both component paths reach EDAR entity 5669001, Q9UNE0 residues 27–448 in the plasma membrane. EDARADD has a separate cytosolic entity; its compartment is not assigned to EDAR. The imported modeled location is coherent with cell-surface receptor signaling.
Supporting Evidence:
Reactome:R-HSA-5675656
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0008544 epidermis development
IEA
GO_REF:0000117
MODIFY
Summary: The broader epidermis-development mapping is refined to EDAR participation in hair follicle placode formation.
Reason: The current ARBA00084990 rule contains a condition set matching EDAR FunFam 1.10.533.10:FF:000006 plus Chordata and emits GO:0008544. This broader developmental mapping is biologically supported, but GO:0060789 hair follicle placode formation gives the demonstrated process more precisely. In the mouse experiments of PMID:19619491, Edar-null/downless embryos retain early Wnt prepatterns but have poorly resolved placode boundaries and fail to maintain focal Wnt activity by E15.5. EDAR signaling participates in refining and maintaining developing primary hair placodes; constitutive EDAR signaling does not initiate them independently of Wnt. Human EDAR-associated ectodermal dysplasia in PMID:10431241 corroborates the conserved appendage role, without constituting a direct human placode assay. The current typed ontology places GO:0060789 beneath the imported epidermis-development term. No redundant hair-follicle-development or ectodermal-placode ancestor, and no unestablished dentin-specific step, is added. The hair-placode refinement describes the process resolved in these mouse experiments; it does not exhaustively encode EDAR roles in teeth and sweat glands.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Failure modes: GRANULARITY MISMATCH
Sources checked:
ARBA:ARBA00084990 SUPPORTS TRANSFER
Actual condition set 11 matches the official EDAR FunFam and chordate lineage. The source supports the broader developmental transfer; independently inspected mouse placode experiments and human genetics justify the finer reviewed process, rather than invalidating the family match.
Proposed replacements: hair follicle placode formation
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0008544 epidermis development
TAS
PMID:12270937
Role of TRAF3 and -6 in the activation of the NF-kappa B and...
MODIFY
Summary: The EDAR developmental statement is refined to hair follicle placode formation using independent mechanistic corroboration.
Reason: The Introduction of PMID:12270937 explicitly discusses human EDAR-associated ectodermal dysplasia and downless mice, citing prior EDAR work. Its new signaling experiments predominantly concern XEDAR/EDA2R, a distinct receptor; the imported TAS remains assessed at that background-statement scope. Independent mouse Methods and Results in PMID:19619491 show that EDAR signaling refines placode boundaries and maintains focal Wnt activity during primary hair placode formation, while early Wnt prepatterns can form without EDAR and constitutive EDAR cannot bypass Wnt. Together with human EDAR disease genetics in PMID:10431241, this supports refinement to GO:0060789. It does not transfer XEDAR experiments to EDAR or claim that placode formation was directly measured in humans. The original source and TAS evidence remain unchanged. The hair-placode refinement describes the process resolved in these mouse experiments; it does not exhaustively encode EDAR roles in teeth and sweat glands.
Proposed replacements: hair follicle placode formation
GO:0016020 membrane
IEA
GO_REF:0000044
MODIFY
Summary: The general membrane mapping can be resolved to the cell surface.
Reason: The UniProt SL-0162 mapping supports a membrane protein but does not by itself specify which membrane. Independent extracellular-ligand signaling evidence and exact EDAR plasma-membrane placement in Reactome justify GO:0005886 as a more informative target-level location. The mapping source remains unchanged, and no additional soluble or intracellular pool is denied.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Failure modes: GRANULARITY MISMATCH
Sources checked:
UniProtKB-SubCell:SL-0162 SUPPORTS TRANSFER
The broad imported membrane mapping is correct; independent target evidence provides the plasma-membrane refinement.
Proposed replacements: plasma membrane
Supporting Evidence:
Reactome:R-HSA-5669012
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0016020 membrane
NAS
PMID:10431241
Mutations in the human homologue of mouse dl cause autosomal...
MODIFY
Summary: Later target evidence resolves the historical membrane prediction to plasma membrane.
Reason: PMID:10431241 inferred a type-I membrane receptor from the human sequence; it did not measure plasma-membrane localization. Subsequent ligand/signaling work and the Q9UNE0-specific Reactome location support GO:0005886 for the gene-level assertion. The NAS and original reference are preserved, with independent evidence explicitly distinguished from the historical prediction.
Proposed replacements: plasma membrane
Supporting Evidence:
Reactome:R-HSA-5669012
GO:0019221 cytokine-mediated signaling pathway
IBA
GO_REF:0000033
ACCEPT
Summary: Cytokine-mediated signaling is an inherited and directly corroborated EDAR role.
Reason: The literal GO:0019221 IBD at PANTHER:PTN004336494 is on the verified human EDAR path. Mouse Edar and human EDA2R provide related experimental grounding, and human EDAR itself is a legitimate descendant source. Independent EDA-A1 recognition and downstream signaling directly corroborate the conserved process. Self-inclusion is not circular, and distinct EDA ligand specificities do not invalidate their shared cytokine-signaling ancestry.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
PANTHER:PTN004336494 SUPPORTS TRANSFER
Literal IBD and 14-node root-to-target path verified; human target and paralog evidence support the shared ancestral process, not interchangeability of ligands.
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0019221 cytokine-mediated signaling pathway
IDA
PMID:11039935
Two-amino acid molecular switch in an epithelial morphogen t...
ACCEPT
Summary: EDA-A1-triggered EDAR signaling fits the cytokine-mediated pathway.
Reason: The verified PMID:11039935 abstract establishes selective EDA-A1–EDAR recognition and cytokine-receptor function. Full original methods were not recovered, so their assay details remain unresolved. Independent selected original PMID:11035039 demonstrates EDAR-dependent NF-kappaB signaling and supports the clearly correct process. Retain the positive IDA with these explicit access boundaries.
Supporting Evidence:
GO:0019221 cytokine-mediated signaling pathway
IEA
GO_REF:0000120
ACCEPT
Summary: The combined automated sources support the established cytokine-signaling process.
Reason: ARBA00028236 has a condition set matching the EDAR FunFam and emits GO:0019221. The stated mouse Edar donor Q9R187 retains an MGI IMP cytokine-signaling annotation to PMID:19619491. Its preserved repository cache contains the Introduction and Discussion but omits detailed Results and Methods; no unseen experimental details are reconstructed. Direct human EDAR receptor and signaling evidence independently supports retention.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
ARBA:ARBA00028236 SUPPORTS TRANSFER
Current matching condition set 52 verified.
UniProtKB:Q9R187 SUPPORTS TRANSFER
Current MGI IMP donor annotation to PMID:19619491 verified; partial original-cache access retained explicitly.
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0038023 signaling receptor activity
IEA
GO_REF:0000120
MODIFY
Summary: The combined receptor mapping is correct but can specify the cytokine ligand class.
Reason: ARBA00027254 matches the EDAR FunFam and emits signaling receptor activity; InterPro IPR047526 includes the EDAR/EDA2R/TNFRSF19 family and carries the same broad mapping. The mouse donor is consistent with receptor function. Direct human EDA-A1 recognition and signal transmission justify GO:0004896. This target-specific refinement does not transfer TNF ligand specificity or all activities of other family members.
Propagation Review
Root cause: TERM SCOPING PROBLEM
Failure modes: GRANULARITY MISMATCH
Sources checked:
ARBA:ARBA00027254 SUPPORTS TRANSFER
Matching condition set 169 verified; emitted receptor term is broad.
InterPro:IPR047526 SUPPORTS TRANSFER
Current family mapping explicitly contains GO:0038023; family membership is not proof of TNF binding.
UniProtKB:Q9R187 SUPPORTS TRANSFER
Mouse Edar supports receptor identity; human direct evidence supplies cytokine specificity.
Proposed replacements: cytokine receptor activity
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0043123 positive regulation of canonical NF-kappaB signal transduction
IEA
GO_REF:0000002
ACCEPT
Summary: EDAR promotes canonical NF-kappaB signaling.
Reason: The current IPR047526 mapping includes GO:0043123, and independent EDAR-specific reporter and EMSA evidence in PMID:11035039 corroborates the positive signaling role. EDA-A1 recognition and adaptor-dependent signal transmission provide a performed mechanism. The association of EDAR with TRAF/NIK proteins does not establish direct binding to each or resolve the entire endogenous signaling complex.
Propagation Review
Root cause: NO FAILURE CORE
Sources checked:
InterPro:IPR047526 SUPPORTS TRANSFER
Current mapping verified and corroborated by human EDAR-specific signaling experiments, not just a paralog.
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0045177 apical part of cell
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Apical localization is a positive polarized-epithelial context.
Reason: The exact mouse Edar donor Q9R187 retains an MGI IDA to GO:0045177 from PMID:12629675. The abstract describes localization at lumen and acinus formation in mouse salivary glands; full microscopy methods and images were not recovered. Preserve this curator-grounded ortholog transfer as a context-specific location rather than calling it false or requiring apical localization in every EDAR-expressing cell. The integrated receptor core uses the broader independently supported plasma membrane; this does not exclude an apical pool.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
UniProtKB:Q9R187 SUPPORTS TRANSFER
Current apical-part IDA to PMID:12629675 verified. Its mouse polarized-gland context is retained; no donor error or demonstrated target loss is alleged.
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md
GO:0046330 positive regulation of JNK cascade
IEA
GO_REF:0000002
KEEP AS NON CORE
Summary: EDAR can promote JNK signaling, with context distinct from its developmental NF-kappaB core.
Reason: IPR047526 currently maps to GO:0046330. The authentic PMID:11035039 abstract positively reports EDAR-dependent JNK activation and effects of death-domain and disease-associated mutants, providing target-specific corroboration beyond a shared-family mapping. Retain this signaling output as non-core while endogenous ligand, expression and tissue conditions remain less resolved than the central NF-kappaB mechanism. No XEDAR-specific assay is silently reassigned to EDAR.
Propagation Review
Root cause: NO FAILURE NON CORE
Sources checked:
InterPro:IPR047526 SUPPORTS TRANSFER
Current JNK mapping is corroborated by a positive EDAR primary abstract; contextual retention does not assert an erroneous family transfer.
Supporting Evidence:
file:human/EDAR/EDAR-bioinformatics/source-audit/RESULTS.md

Core Functions

Receives the extracellular EDA-A1 signal and transmits it across the plasma membrane to intracellular signaling machinery, promoting canonical NF-kappaB signaling. Ligand recognition and signal transmission constitute one cytokine-receptor function.

Supporting Evidence:

References

Loading supporting content…

Download this section (compressed HTML)

Suggested Questions for Experts

Q: Does the longer EDAR product differ from the displayed product in trafficking, ligand responsiveness or recruitment of signaling adaptors?

Q: Under which endogenous expression and ligand conditions does EDAR activate JNK or cell death, and how do those outputs relate to its developmental NF-kappaB function?

Suggested Experiments

Experiment: Compare sequence-verified EDAR products in an EDAR-deficient epithelial system using matched expression and surface abundance, measuring EDA-A1 binding, NF-kappaB signaling and adaptor recruitment.

Experiment: Test ligand-dependent signaling at endogenous EDAR abundance in ectodermal organoid models, distinguishing developmental responses from cell death observed after receptor overexpression.

πŸ“š Additional Documentation

Notes

(EDAR-notes.md)

Loading supporting content…

Download this section (compressed HTML)

Source Guide

(EDAR-source-guide.md)

Loading supporting content…

Download this section (compressed HTML)

πŸ“„ View Raw YAML

Loading supporting content…

Download this section (compressed HTML)