Annotations: 7UIH

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E [auth F]	Heavy Chain	IGHV3	-	26s proteasome non-atpase regulatory subunit 2	SAbDab (2025-11-28)
D [auth E]	Light Chain	IGKV1	Kappa	26s proteasome non-atpase regulatory subunit 2	SAbDab (2025-11-28)
C [auth D]	Heavy Chain	IGHV3	-	26s proteasome non-atpase regulatory subunit 2	SAbDab (2025-11-28)
B [auth C]	Light Chain	IGKV1	Kappa	26s proteasome non-atpase regulatory subunit 2	SAbDab (2025-11-28)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01851	Proteasome/cyclosome repeat (PC_rep)	Proteasome/cyclosome repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth F]	Fab 8 HC CDRs	-	-	-
D [auth E]	Fab 8 LC CDRs	-	-	-
C [auth D]	Fab 14 HC CDRs	-	-	-
B [auth C]	Fab 14 LC CDRs	-	-	-
A	26S proteasome non-ATPase regulatory subunit 2	enzyme regulator activity molecular function regulator activity	regulation of biological process regulation of cellular process catabolic process regulation of protein metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process protein catabolic process regulation of catabolic process macromolecule catabolic process regulation of primary metabolic process metabolic process cellular process protein metabolic process regulation of biological process regulation of cellular process catabolic process regulation of protein metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process protein catabolic process regulation of catabolic process macromolecule catabolic process regulation of primary metabolic process metabolic process cellular process protein metabolic process macromolecule metabolic process regulation of metabolic process regulation of protein catabolic process proteolysis involved in protein catabolic process proteasomal protein catabolic process proteasome-mediated ubiquitin-dependent protein catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process	proteasome accessory complex protein-containing complex intracellular anatomical structure cellular anatomical structure catalytic complex peptidase complex proteasome complex endopeptidase complex intracellular protein-containing complex membrane proteasome regulatory particle extracellular region proteasome regulatory particle, base subcomplex extracellular exosome proteasome accessory complex protein-containing complex intracellular anatomical structure cellular anatomical structure catalytic complex peptidase complex proteasome complex endopeptidase complex intracellular protein-containing complex membrane proteasome regulatory particle extracellular region proteasome regulatory particle, base subcomplex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle extracellular space vesicle extracellular membrane-bounded organelle vesicle lumen intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen secretory granule lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle organelle lumen secretory granule secretory vesicle cytoplasm cytosol membraneless organelle intracellular membraneless organelle proteasome storage granule ficolin-1-rich granule ficolin-1-rich granule lumen nucleus nucleoplasm nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR041433	26S proteasome non-ATPase regulatory subunit RPN1, C-terminal	Domain
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR002015	Proteasome/cyclosome repeat	Repeat
A	IPR016643	26S proteasome regulatory complex, non-ATPase subcomplex, Rpn1 subunit	Family
A	IPR011989	Armadillo-like helical	Homologous Superfamily
A	IPR040892	RPN1, N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q13200	breast cancer ovarian cancer lung cancer psoriasis non-small cell lung carcinoma

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 R01GM157729.