Annotations: 6U3W

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	TPR-like	8095921	3001345	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	RING/U-box like	8095922	3000160	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	TPR-like	8095918	3001345	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	COPI_C	e6u3wA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: Coatomer subunit alpha C-terminal domain (From Topology)	T: Coatomer subunit alpha C-terminal domain	F: COPI_C	ECOD (1.6)
A	COPI_C_1	e6u3wA2	A: few secondary structure elements	X: RING/U-box-like	H: RING/U-box-like	T: RING/U-box	F: COPI_C_1	ECOD (1.6)
B	Coatomer_E	e6u3wB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: Coatomer_E	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.25.40.10	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat	Tetratricopeptide repeat domain	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF06957	Coatomer (COPI) alpha subunit C-terminus (COPI_C)	Coatomer (COPI) alpha subunit C-terminus	-	Repeat
B	PF04733	Coatomer epsilon subunit (Coatomer_E)	Coatomer epsilon subunit	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Coatomer subunit alpha	protein binding binding ubiquitin binding ubiquitin-like protein binding structural molecule activity	localization transport cellular process establishment of localization Golgi vesicle transport vesicle-mediated transport intra-Golgi vesicle-mediated transport protein localization cellular localization establishment of protein localization nitrogen compound transport organic substance transport intracellular transport protein transport localization transport cellular process establishment of localization Golgi vesicle transport vesicle-mediated transport intra-Golgi vesicle-mediated transport protein localization cellular localization establishment of protein localization nitrogen compound transport organic substance transport intracellular transport protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization intracellular protein transport retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum intracellular mRNA localization RNA localization endoplasmic reticulum to Golgi vesicle-mediated transport	membrane-bounded organelle protein-containing complex intracellular anatomical structure vesicle coat intracellular vesicle membrane protein complex endomembrane system COPI-coated vesicle membrane coat intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle coated vesicle membrane-bounded organelle protein-containing complex intracellular anatomical structure vesicle coat intracellular vesicle membrane protein complex endomembrane system COPI-coated vesicle membrane coat intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle coated vesicle Golgi-associated vesicle vesicle COPI vesicle coat Golgi apparatus membrane cellular anatomical entity coated membrane intracellular membrane-bounded organelle COPI-coated vesicle membrane coated vesicle membrane cytoplasmic vesicle membrane organelle Golgi-associated vesicle membrane cytoplasm organelle membrane Golgi membrane
B	Coatomer subunit epsilon	structural molecule activity protein-containing complex binding chromatin binding binding promoter-specific chromatin binding	localization transport cellular process establishment of localization Golgi vesicle transport vesicle-mediated transport intra-Golgi vesicle-mediated transport cellular localization intracellular transport endosomal transport late endosome to vacuole transport late endosome to vacuole transport via multivesicular body sorting pathway multivesicular body sorting pathway establishment of localization in cell localization transport cellular process establishment of localization Golgi vesicle transport vesicle-mediated transport intra-Golgi vesicle-mediated transport cellular localization intracellular transport endosomal transport late endosome to vacuole transport late endosome to vacuole transport via multivesicular body sorting pathway multivesicular body sorting pathway establishment of localization in cell vacuolar transport endosome transport via multivesicular body sorting pathway retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum endoplasmic reticulum to Golgi vesicle-mediated transport membrane organization vesicle budding from membrane cellular component organization vesicle organization organelle organization vesicle coating cellular component organization or biogenesis protein localization establishment of protein localization nitrogen compound transport organic substance transport protein transport cellular macromolecule localization macromolecule localization	membrane-bounded organelle protein-containing complex intracellular anatomical structure vesicle coat intracellular vesicle membrane protein complex endomembrane system COPI-coated vesicle membrane coat intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle coated vesicle membrane-bounded organelle protein-containing complex intracellular anatomical structure vesicle coat intracellular vesicle membrane protein complex endomembrane system COPI-coated vesicle membrane coat intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle coated vesicle Golgi-associated vesicle vesicle COPI vesicle coat Golgi apparatus membrane cellular anatomical entity coated membrane intracellular membrane-bounded organelle COPI-coated vesicle membrane coated vesicle membrane cytoplasmic vesicle membrane organelle Golgi-associated vesicle membrane cytoplasm organelle membrane Golgi membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR019775	WD40 repeat, conserved site	Conserved Site
A	IPR011044	Quinoprotein amine dehydrogenase, beta chain-like	Homologous Superfamily
A	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
A	IPR016391	Coatomer subunit alpha	Family
A	IPR006692	Coatomer, WD associated region	Domain
A	IPR010714	Coatomer, alpha subunit, C-terminal	Domain
A	IPR001680	WD40 repeat	Repeat
A	IPR047312	Coatomer subunit alpha, WD Associated Region	Domain
A	IPR020472	G-protein beta WD-40 repeat	Repeat
A	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
B	IPR006822	Coatomer, epsilon subunit	Family
B	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily

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.