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Protein Page:
PSMA5 (human)

PSMA5 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. The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel. PSMA5 interacts directly with the PSMG1-PSMG2 heterodimer which promotes 20S proteasome assembly. Up-regulated in colon cancer cell lines. Up-regulated in fetal Down syndrome (DS) brain. May be the target of the transcriptional activator NFE2L2. Expressed in fetal brain. Belongs to the peptidase T1A family. Note: This description may include information from UniProtKB.
Protein type: EC; Protease; Proteasome complex
Chromosomal Location of Human Ortholog: 1p13
Cellular Component: cytoplasm; cytosol; nucleoplasm; nucleus; proteasome complex; proteasome core complex
Molecular Function: protein binding
Biological Process: anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent; MAPKKK cascade; negative regulation of ubiquitin-protein ligase activity during mitotic cell cycle; positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; proteasomal ubiquitin-dependent protein catabolic process; protein polyubiquitination; regulation of amino acid metabolic process; regulation of mRNA stability; stimulatory C-type lectin receptor signaling pathway; T cell receptor signaling pathway; tumor necrosis factor-mediated signaling pathway; Wnt receptor signaling pathway, planar cell polarity pathway
Reference #:  P28066 (UniProtKB)
Alt. Names/Synonyms: macropain subunit zeta; Macropain zeta chain; MGC117302; MGC125802; MGC125803; MGC125804; Multicatalytic endopeptidase complex zeta chain; proteasome (prosome, macropain) subunit, alpha type, 5; proteasome alpha 5 subunit; proteasome component 5; Proteasome subunit alpha type-5; proteasome subunit zeta; Proteasome zeta chain; PSA5; PSC5; PSMA5; ZETA
Gene Symbols: PSMA5
Molecular weight: 26,411 Da
Basal Isoelectric point: 4.74  Predict pI for various phosphorylation states
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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