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Description for Protein PSMA4

proteasome (prosome, macropain) subunit, alpha type, 4
15 total interacting proteins; 9 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 4/1)
(membrane: 1; platelet: 3; secretome: 2)
Summary:
The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the peptidase T1A family, that is a 20S core alpha subunit. Three alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
  • CC: Coiled Coil
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    3.4.25.1
    KEGG - Orthology:
    K02728
    KEGG - Pathway(s):
    hsa03050
    (The yellow boxes represents platelet proteins)
    Nomenclature / Alternative Names:
    Proteasome component C9; Macropain subunit C9; Multicatalytic endopeptidase complex subunit C9; Proteasome subunit L; Proteasome subunit HC9; HC9
    Approved Symbol:
    PSMA4
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 4
    Human (de-) phosphorylation sites: 4; No platelet phosphorylation sites
    Phosphorylation Targets:
    Total phosphorylation targets: 0
    Human phosphorylation targets: 0;Predicted platelet targets: 0
    		Protein Characteristics:
    Isoform-specific Information
    Icon DrugsAssociated Drugs (DrugBank Accession):

  • (3AR,6R,6AS)-6-((S)-((S)-CYCLOHEX-2-ENYL)(HYDROXY)METHYL)-6A-METHYL-4-OXO-HEXAHYDRO-2H-FURO[3,2-C]PYRROLE-6-CARBALDEHYDE(db);
  • N-[(1R)-1-(DIHYDROXYBORYL)-3-METHYLBUTYL]-N-(PYRAZIN-2-YLCARBONYL)-L-PHENYLALANINAMIDE(db)

    Associated Genetic Diseases:

    None Available
    		• Predicted Transmembrane Domains:
  • Isoform 3 : 0
  • Isoform 2 : 0
  • Isoform 1 : 0
    • Additional Identifiers:

    HPRD: 10168 Entrez Gene ID: 5685 OMIM ID: 176846 Swissprot Accession: P25789; Q7Z474; Q567Q5;