Annotations: 1HEK

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1heka1	All alpha proteins	Retroviral matrix proteins	Retroviral matrix proteins	EIAV matrix antigen	EIAV matrix antigen	EIAV (Equine infectious anemia virus ) [TaxId: 11665 ],	SCOPe (2.08)
A	d1heka2	Artifacts	Tags	Tags	Tags	N-terminal Tags	EIAV (Equine infectious anemia virus ) [TaxId: 11665 ],	SCOPe (2.08)
B	d1hekb1	All alpha proteins	Retroviral matrix proteins	Retroviral matrix proteins	EIAV matrix antigen	EIAV matrix antigen	EIAV (Equine infectious anemia virus ) [TaxId: 11665 ],	SCOPe (2.08)
B	d1hekb2	Artifacts	Tags	Tags	Tags	N-terminal Tags	EIAV (Equine infectious anemia virus ) [TaxId: 11665 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	EIAV matrix antigen	8024049	4002853	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Retroviral matrix proteins	8036428	3000562	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Retroviral matrix proteins	8036428	3000562	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	Gag_p15	e1hekA1	A: alpha arrays	X: Retroviral matrix proteins (From Topology)	H: Retroviral matrix proteins (From Topology)	T: Retroviral matrix proteins	F: Gag_p15	ECOD (1.6)
B	Gag_p15	e1hekB1	A: alpha arrays	X: Retroviral matrix proteins (From Topology)	H: Retroviral matrix proteins (From Topology)	T: Retroviral matrix proteins	F: Gag_p15	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.150.90	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
B	1.10.150.90	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF08723	Gag protein p15 (Gag_p15)	Gag protein p15	Gag p15 is a viral membrane-binding matrix protein which is alpha helical in structure.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	GAG POLYPROTEIN, CORE PROTEIN P15	binding organic cyclic compound binding nucleic acid binding structural constituent of virion structural molecule activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	virion assembly viral process viral budding viral budding via host ESCRT complex viral life cycle	viral nucleocapsid viral capsid virion component

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR045345	Retroviral nucleocapsid Gag protein p24, C-terminal domain	Domain
A, B	IPR036875	Zinc finger, CCHC-type superfamily	Homologous Superfamily
A, B	IPR014834	Gag protein p15	Domain
A, B	IPR001878	Zinc finger, CCHC-type	Domain
A, B	IPR008919	Retrovirus capsid, N-terminal	Homologous Superfamily
A, B	IPR010999	Retroviral matrix protein	Homologous Superfamily
A, B	IPR012344	Matrix protein, lentiviral and alpha-retroviral, N-terminal	Homologous Superfamily
A, B	IPR008916	Retrovirus capsid, C-terminal	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.