Annotations: 2KU2

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ku2a1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
A	d2ku2a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
B	d2ku2b1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
B	d2ku2b2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
C	d2ku2c1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
C	d2ku2c2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
D	d2ku2d1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
D	d2ku2d2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
E	d2ku2e1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
E	d2ku2e2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
F	d2ku2f1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
F	d2ku2f2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
G	d2ku2g1	Alpha and beta proteins (a+b)	Ntn hydrolase-like	N-terminal nucleophile aminohydrolases (Ntn hydrolases)	Proteasome subunits	Proteasome alpha subunit (non-catalytic)	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)
G	d2ku2g2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermoplasma acidophilum ) [TaxId: 2303 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Class II glutamine amidotransferases	8034248	3000131	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	Proteasome	e2ku2A1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
B	Proteasome	e2ku2B1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
C	Proteasome	e2ku2C1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
D	Proteasome	e2ku2D1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
E	Proteasome	e2ku2E1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
F	Proteasome	e2ku2F1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)
G	Proteasome	e2ku2G1	A: a+b four layers	X: Ntn/PP2C	H: Ntn	T: Proteasome subunits	F: Proteasome	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
B	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
C	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
D	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
E	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
F	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)
G	3.60.20.10	Alpha Beta	4-Layer Sandwich	Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1	Aminohydrolase, N-terminal nucleophile (Ntn) domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G	PF00227	Proteasome subunit (Proteasome)	Proteasome subunit	The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...	The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].	Domain
A, B, C, D, E A, B, C, D, E, F, G	PF10584	Proteasome subunit A N-terminal signature (Proteasome_A_N)	Proteasome subunit A N-terminal signature	-	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 subunit alpha	peptidase activity catalytic activity, acting on a protein threonine-type peptidase activity hydrolase activity catalytic activity endopeptidase activity threonine-type endopeptidase activity	organonitrogen compound catabolic process organonitrogen compound metabolic process catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process organic substance metabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process metabolic process protein metabolic process organonitrogen compound catabolic process organonitrogen compound metabolic process catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process organic substance metabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process metabolic process protein metabolic process macromolecule metabolic process organic substance catabolic process proteasomal protein catabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity protein-containing complex proteasome core complex, alpha-subunit complex catalytic complex peptidase complex proteasome complex endopeptidase complex proteasome core complex intracellular protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G	IPR000426	Proteasome alpha-subunit, N-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR029055	Nucleophile aminohydrolases, N-terminal	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G	IPR023332	Proteasome alpha-type subunit	Family
A, B, C, D, E A, B, C, D, E, F, G	IPR001353	Proteasome, subunit alpha/beta	Family
A, B, C, D, E A, B, C, D, E, F, G	IPR019982	Proteasome alpha subunit, archaeal	Family

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.