Annotations: 5MSK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF02251,PF02252	e5mskA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
B	PF02251,PF02252	e5mskB1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
C	PF02251,PF02252	e5mskC1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
D	PF02251,PF02252	e5mskD1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
E	PF02251,PF02252	e5mskE1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
F	PF02251,PF02252	e5mskF1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)
G	PF02251,PF02252	e5mskG1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Proteasome activator reg(alpha) (From Topology)	T: Proteasome activator reg(alpha)	F: PF02251,PF02252	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G	PF02252	Proteasome activator pa28 beta subunit (PA28_beta)	Proteasome activator pa28 beta subunit	-	Family
A, B, C, D, E A, B, C, D, E, F, G	PF02251	Proteasome activator pa28 alpha subunit (PA28_alpha)	Proteasome activator pa28 alpha subunit	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G	Proteasome activator complex subunit 2	identical protein binding protein binding binding	antigen processing and presentation immune system process antigen processing and presentation of exogenous antigen catabolic process proteolysis involved in protein catabolic process macromolecule catabolic process regulation of primary metabolic process organic substance metabolic process regulation of proteolysis involved in protein catabolic process regulation of proteolysis proteolysis protein metabolic process organonitrogen compound catabolic process regulation of biological process antigen processing and presentation immune system process antigen processing and presentation of exogenous antigen catabolic process proteolysis involved in protein catabolic process macromolecule catabolic process regulation of primary metabolic process organic substance metabolic process regulation of proteolysis involved in protein catabolic process regulation of proteolysis proteolysis protein metabolic process organonitrogen compound catabolic process regulation of biological process organonitrogen compound metabolic process regulation of protein metabolic process biological regulation primary metabolic process proteasomal protein catabolic process regulation of macromolecule metabolic process protein catabolic process regulation of catabolic process regulation of proteasomal protein catabolic process metabolic process macromolecule metabolic process regulation of metabolic process organic substance catabolic process regulation of protein catabolic process regulation of cell cycle phase transition regulation of cellular process regulation of cell cycle process cell cycle phase transition regulation of cell cycle G1/S phase transition cell cycle G1/S phase transition mitotic cell cycle regulation of mitotic cell cycle phase transition regulation of mitotic cell cycle regulation of G1/S transition of mitotic cell cycle mitotic cell cycle process cellular process cell cycle regulation of cell cycle G1/S transition of mitotic cell cycle cell cycle process mitotic cell cycle phase transition	proteasome accessory complex protein-containing complex intracellular anatomical structure catalytic complex peptidase complex proteasome activator complex proteasome complex endopeptidase complex cellular anatomical entity intracellular protein-containing complex cytoplasm membrane-bounded organelle nucleus membrane-enclosed lumen proteasome accessory complex protein-containing complex intracellular anatomical structure catalytic complex peptidase complex proteasome activator complex proteasome complex endopeptidase complex cellular anatomical entity intracellular protein-containing complex cytoplasm membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G	IPR003186	Proteasome activator PA28, C-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR036252	Proteasome activator superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G	IPR036996	Proteasome activator PA28, N-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G	IPR003185	Proteasome activator PA28, N-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR036997	Proteasome activator PA28, C-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G	IPR009077	Proteasome activator PA28	Family

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.