Annotations: 2MR3

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2mr3a1	All alpha proteins	alpha-alpha superhelix	TPR-like	TPR-like repeats from PCI (proteasome / COP9 signalosome / eIF3) domains	automated matches	Baker's yeast (Saccharomyces cerevisiae S288C ) [TaxId: 559292 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF01399	e2mr3A2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF01399	ECOD (1.6)
A	PF22037	e2mr3A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF22037	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18261	Rpn9 C-terminal helix (Rpn9_C)	Rpn9 C-terminal helix	-	Family
A	PF01399	PCI domain (PCI)	PCI domain	This domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	26S proteasome regulatory subunit RPN9	structural molecule 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 cellular component organization cellular component biogenesis proteasome assembly cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis proteasomal protein catabolic process proteasome-mediated ubiquitin-dependent protein catabolic process	protein-containing complex catalytic complex peptidase complex proteasome complex endopeptidase complex intracellular protein-containing complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol proteasome regulatory particle proteasome regulatory particle, lid subcomplex proteasome accessory complex intracellular organelle protein-containing complex catalytic complex peptidase complex proteasome complex endopeptidase complex intracellular protein-containing complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol proteasome regulatory particle proteasome regulatory particle, lid subcomplex proteasome accessory complex intracellular organelle organelle intracellular non-membrane-bounded organelle proteasome storage granule non-membrane-bounded organelle membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A	IPR035298	26S Proteasome non-ATPase regulatory subunit 13	Family
A	IPR000717	Proteasome component (PCI) domain	Domain
A	IPR040798	Rpn9, C-terminal helix	Domain

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.