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Details on Person UniProt:Q9Y6I3 EPN1

Class:IdReferenceGeneProduct:146962
_chainChangeLogchain:1-576 added on Sat February 7 2015
_displayNameUniProt:Q9Y6I3 EPN1
_timestamp2026-02-20 22:43:01
chainchain:1-576
checksum68DD433F3168E975
commentFUNCTION Binds to membranes enriched in phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2). Modifies membrane curvature and facilitates the formation of clathrin-coated invaginations (By similarity). Regulates receptor-mediated endocytosis (PubMed:10393179, PubMed:10557078).SUBUNIT Monomer. Binds clathrin, ZBTB16/ZNF145 and ITSN1 (By similarity). Binds ubiquitinated proteins (By similarity). Binds AP2A1 and AP2A2. Interacts with RALBP1 in a complex also containing NUMB and TFAP2A during interphase and mitosis. Interacts with AP2B1. Interacts with UBQLN2. Interacts with REPS2; the interaction is direct (PubMed:10393179, PubMed:10557078, PubMed:10764745). Interacts with EPS15; the interaction is direct (PubMed:10393179, PubMed:10764745). Interacts with ENTREP1 (PubMed:34927784).SUBCELLULAR LOCATION Associated with the cytoplasmic membrane at sites where clathrin-coated pits are forming. Colocalizes with clathrin and AP-2 in a punctate pattern on the plasma membrane. Detected in presynaptic nerve terminals and in Golgi stacks. May shuttle to the nucleus when associated with ZBTB16/ZNF145 (By similarity).ALTERNATIVE PRODUCTS The NPF repeat domain is involved in EPS15 binding.DOMAIN The DPW repeat domain is involved in AP2A2 and clathrin binding.DOMAIN The [DE]-X(1,2)-F-X-X-[FL]-X-X-X-R motif mediates interaction with the AP-2 complex subunit AP2B1.PTM Phosphorylated on serine and/or threonine residues in mitotic cells. Phosphorylation reduces interaction with REPS2, AP-2 and the membrane fraction. Depolarization of synaptosomes results in dephosphorylation.PTM Ubiquitinated.MISCELLANEOUS May be due to a competing donor splice site.SIMILARITY Belongs to the epsin family.SEQUENCE CAUTION The bubble's bend - Issue 42 of January 2004
created[InstanceEdit:143527] Schmidt, EE, 2004-11-12 07:45:10
descriptionrecommendedName: Epsin-1 alternativeName: EH domain-binding mitotic phosphoprotein alternativeName: EPS-15-interacting protein 1
geneNameEPN1
identifierQ9Y6I3
isSequenceChangedFALSE
keyword3D-structure
Alternative splicing
Cell membrane
Coated pit
Cytoplasm
Endocytosis
Lipid-binding
Membrane
Methylation
Nucleus
Phosphoprotein
Proteomics identification
Reference proteome
Repeat
Ubl conjugation
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameEPN1
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:9001746] ENSEMBL:ENSG00000063245 EPN1 [Homo sapiens]
secondaryIdentifierEPN1_HUMAN
Q86ST3
Q9HA18
sequenceLength576
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:146963] UniProt:Q9Y6I3-2 EPN1 [Homo sapiens]
[ReferenceIsoform:146964] UniProt:Q9Y6I3-3 EPN1 [Homo sapiens]
[ReferenceIsoform:416124] UniProt:Q9Y6I3-1 EPN1 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:182952] EPN1 [plasma membrane] [Homo sapiens]
[EntityWithAccessionedSequence:8865826] EPN1 [cytosol] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:Q9Y6I3 EPN1 (146962)