Annotations: 1KY6

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ky6a1	All beta proteins	Immunoglobulin-like beta-sandwich	Clathrin adaptor appendage domain	Alpha-adaptin ear subdomain-like	Alpha-adaptin AP2 ear domain, N-terminal subdomain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1ky6a2	Alpha and beta proteins (a+b)	Subdomain of clathrin and coatomer appendage domain	Subdomain of clathrin and coatomer appendage domain	Clathrin adaptor appendage, alpha and beta chain-specific domain	Alpa-adaptin AP2, C-terminal subdomain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1ky6a3	Artifacts	Tags	Tags	Tags	N-terminal Tags	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Clathrin adaptor appendage domain	8055289	3002052	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Subdomain of clathrin and coatomer appendage domain	8040757	3000382	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Alpha_adaptinC2	e1ky6A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_adaptinC2	ECOD (1.6)
A	Alpha_adaptin_C	e1ky6A2	A: a+b two layers	X: TBP-like	H: Subdomain of clathrin and coatomer appendage domain (From Topology)	T: Subdomain of clathrin and coatomer appendage domain	F: Alpha_adaptin_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.1230	Mainly Beta	Sandwich	Immunoglobulin-like	Gamma-adaptin ear (GAE) domain	CATH (4.3.0)
A	3.30.310.10	Alpha Beta	2-Layer Sandwich	TATA-Binding Protein	TATA-Binding Protein	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02296	Alpha adaptin AP2, C-terminal domain (Alpha_adaptin_C)	Alpha adaptin AP2, C-terminal domain	-	Family
A	PF02883	Adaptin C-terminal domain (Alpha_adaptinC2)	Adaptin C-terminal domain	Alpha adaptin is a heterotetramer which regulates clathrin-bud formation. The carboxyl-terminal appendage of the alpha subunit regulates translocation of endocytic accessory proteins to the bud site. This ig-fold domain is found in alpha, beta and ...	Alpha adaptin is a heterotetramer which regulates clathrin-bud formation. The carboxyl-terminal appendage of the alpha subunit regulates translocation of endocytic accessory proteins to the bud site. This ig-fold domain is found in alpha, beta and gamma adaptins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ALPHA-ADAPTIN C	binding phospholipid binding lipid binding phosphatidylinositol binding protein binding protein domain specific binding kinase binding enzyme binding protein serine/threonine kinase binding protein kinase binding protein-containing complex binding cargo adaptor activity clathrin adaptor activity protein-macromolecule adaptor activity binding phospholipid binding lipid binding phosphatidylinositol binding protein binding protein domain specific binding kinase binding enzyme binding protein serine/threonine kinase binding protein kinase binding protein-containing complex binding cargo adaptor activity clathrin adaptor activity protein-macromolecule adaptor activity molecular adaptor activity disordered domain specific binding	developmental process regulation of biological process regulation of cellular process regulation of developmental process cellular developmental process hemopoiesis biological regulation cell development regulation of cell differentiation regulation of hematopoietic stem cell differentiation stem cell differentiation cell differentiation regulation of stem cell differentiation anatomical structure development hematopoietic stem cell differentiation developmental process regulation of biological process regulation of cellular process regulation of developmental process cellular developmental process hemopoiesis biological regulation cell development regulation of cell differentiation regulation of hematopoietic stem cell differentiation stem cell differentiation cell differentiation regulation of stem cell differentiation anatomical structure development hematopoietic stem cell differentiation cellular process regulation of hematopoietic progenitor cell differentiation hematopoietic progenitor cell differentiation localization import into cell transport clathrin-dependent endocytosis receptor-mediated endocytosis endocytosis establishment of localization vesicle-mediated transport cellular localization receptor internalization postsynaptic neurotransmitter receptor internalization vesicle-mediated transport in synapse protein-containing complex localization neurotransmitter receptor internalization regulation of postsynaptic membrane neurotransmitter receptor levels postsynaptic endocytosis establishment of localization in cell regulation of biological quality protein localization establishment of protein localization nitrogen compound transport organic substance transport intracellular transport protein transport cellular macromolecule localization macromolecule localization intracellular protein transport	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle protein-containing complex membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle protein-containing complex vesicle coat membrane protein complex membrane coat cell periphery bounding membrane of organelle AP-type membrane coat adaptor complex AP-2 adaptor complex vesicle membrane clathrin-coated pit clathrin-coated vesicle endocytic vesicle membrane coated vesicle clathrin vesicle coat endocytic vesicle clathrin-coated vesicle membrane clathrin coat of coated pit clathrin coat of endocytic vesicle clathrin-coated endocytic vesicle membrane plasma membrane protein complex membrane plasma membrane coated membrane clathrin-coated endocytic vesicle clathrin coat cytoplasmic vesicle membrane coated vesicle membrane organelle membrane clathrin adaptor complex cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane postsynapse synapse cell junction transport vesicle presynapse synaptic vesicle exocytic vesicle
B [auth P]	EH DOMAIN BINDING PROTEIN EPSIN	clathrin binding protein binding binding phospholipid binding lipid binding transmembrane transporter binding cargo adaptor activity clathrin adaptor activity protein-macromolecule adaptor activity molecular adaptor activity molecular sequestering activity	multicellular organismal process regulation of sprouting angiogenesis regulation of developmental process negative regulation of biological process angiogenesis regulation of vasculature development multicellular organism development tube morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development developmental process multicellular organismal process regulation of sprouting angiogenesis regulation of developmental process negative regulation of biological process angiogenesis regulation of vasculature development multicellular organism development tube morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development developmental process regulation of multicellular organismal development regulation of biological process blood vessel morphogenesis tube development negative regulation of blood vessel morphogenesis negative regulation of developmental process biological regulation negative regulation of angiogenesis sprouting angiogenesis vasculature development circulatory system development anatomical structure morphogenesis negative regulation of vasculature development regulation of angiogenesis anatomical structure formation involved in morphogenesis negative regulation of multicellular organismal process negative regulation of sprouting angiogenesis multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process localization import into cell transport cellular process endocytosis establishment of localization vesicle-mediated transport positive regulation of clathrin coat assembly regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization protein-containing complex organization positive regulation of cellular component biogenesis positive regulation of biological process regulation of clathrin coat assembly regulation of cellular component biogenesis clathrin coat assembly cellular component organization cellular component biogenesis regulation of protein-containing complex assembly positive regulation of protein-containing complex assembly cellular component assembly protein-containing complex assembly cellular component organization or biogenesis positive regulation of cellular process embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development animal organ development embryonic organ development membrane organization membrane fission cellular response to stimulus cell surface receptor signaling pathway response to stimulus signaling cell communication Notch signaling pathway signal transduction	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane clathrin-coated pit endomembrane system axon neuron projection cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane clathrin-coated pit endomembrane system axon neuron projection axon terminus plasma membrane bounded cell projection presynapse cell projection distal axon terminal bouton neuron projection terminus intracellular anatomical structure cytoplasm cytosol presynaptic membrane membrane-bounded organelle protein-containing complex vesicle coat intracellular vesicle membrane protein complex membrane coat intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle clathrin-coated vesicle clathrin vesicle coat coated vesicle vesicle clathrin-coated vesicle membrane coated membrane intracellular membrane-bounded organelle clathrin coat coated vesicle membrane cytoplasmic vesicle membrane organelle organelle membrane endosome Schaffer collateral - CA1 synapse nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR003164	Clathrin adaptor, alpha-adaptin, appendage, C-terminal subdomain	Domain
A	IPR011989	Armadillo-like helical	Homologous Superfamily
A	IPR012295	TBP domain superfamily	Homologous Superfamily
A	IPR002553	Clathrin/coatomer adaptor, adaptin-like, N-terminal	Domain
A	IPR013041	Clathrin adaptor, appendage, Ig-like subdomain superfamily	Homologous Superfamily
A	IPR008152	Clathrin adaptor, alpha/beta/gamma-adaptin, appendage, Ig-like subdomain	Domain
A	IPR017104	Adaptor protein complex AP-2, alpha subunit	Family
A	IPR009028	Coatomer/calthrin adaptor appendage, C-terminal subdomain	Homologous Superfamily
B [auth P]	IPR008942	ENTH/VHS	Homologous Superfamily
B [auth P]	IPR013809	ENTH domain	Domain
B [auth P]	IPR003903	Ubiquitin interacting motif	Conserved Site

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.