InnateDB: Systems Biology of the Innate Immune Response

Homo sapiens Protein: PSMB5

Summary

InnateDB Protein

IDBP-2990.5

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

PSMB5

Protein Name

proteasome (prosome, macropain) subunit, beta type, 5

Synonyms

LMPX; MB1; X;

Species

Homo sapiens

Ensembl Protein

ENSP00000355325

InnateDB Gene

IDBG-2988 (PSMB5)

Protein Structure

UniProt Annotation

Function

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. This unit is responsible of the chymotrypsin-like activity of the proteasome and is one of the principal target of the proteasome inhibitor bortezomib. May catalyze basal processing of intracellular antigens. Plays a role in the protection against oxidative damage through the Nrf2-ARE pathway (By similarity). {ECO:0000250}.

Subcellular Localization

Cytoplasm. Nucleus.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 111 experimentally validated interaction(s) in this database.
They are also associated with 6 interaction(s) predicted by orthology.

Experimentally validated
Total	111 [view]
Protein-Protein	108 [view]
Protein-DNA	3 [view]
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Predicted by orthology
Total	6 [view]

Gene Ontology

Molecular Function

Accession	GO Term
GO:0004298	threonine-type endopeptidase activity
GO:0005515	protein binding
GO:0008233	peptidase activity

Biological Process

GO:0000082	G1/S transition of mitotic cell cycle
GO:0000209	protein polyubiquitination
GO:0000278	mitotic cell cycle
GO:0002474	antigen processing and presentation of peptide antigen via MHC class I
GO:0002479	antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent
GO:0006521	regulation of cellular amino acid metabolic process
GO:0006915	apoptotic process
GO:0006977	DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest
GO:0006979	response to oxidative stress
GO:0010467	gene expression
GO:0016032	viral process
GO:0016070	RNA metabolic process
GO:0016071	mRNA metabolic process
GO:0031145	anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process
GO:0034641	cellular nitrogen compound metabolic process
GO:0042590	antigen processing and presentation of exogenous peptide antigen via MHC class I
GO:0042981	regulation of apoptotic process
GO:0043066	negative regulation of apoptotic process
GO:0043161	proteasome-mediated ubiquitin-dependent protein catabolic process
GO:0044281	small molecule metabolic process
GO:0051436	negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle
GO:0051437	positive regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle
GO:0051439	regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle
GO:0051603	proteolysis involved in cellular protein catabolic process

Cellular Component

GO:0000502	proteasome complex
GO:0005634	nucleus
GO:0005654	nucleoplasm
GO:0005829	cytosol
GO:0005839	proteasome core complex
GO:0070062	extracellular vesicular exosome