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Description for Protein PABPC4

poly(A) binding protein, cytoplasmic 4 (inducible form)
17 total interacting proteins; 9 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 1/0)
(platelet: 3)
Summary:
Poly(A)-binding proteins (PABPs) bind to the poly(A) tail present at the 3-prime ends of most eukaryotic mRNAs. PABPC4 or IPABP (inducible PABP) was isolated as an activation-induced T-cell mRNA encoding a protein. Activation of T cells increased PABPC4 mRNA levels in T cells approximately 5-fold. PABPC4 contains 4 RNA-binding domains and proline-rich C terminus. PABPC4 is localized primarily to the cytoplasm. It is suggested that PABPC4 might be necessary for regulation of stability of labile mRNA species in activated T cells. PABPC4 was also identified as an antigen, APP1 (activated-platelet protein-1), expressed on thrombin-activated rabbit platelets. PABPC4 may also be involved in the regulation of protein translation in platelets and megakaryocytes or may participate in the binding or stabilization of polyadenylates in platelet dense granules. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
  • RRM: RNA recognition motif
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    None Available
    KEGG - Orthology:
    None Available
    KEGG - Pathway(s):
    None Available
    Nomenclature / Alternative Names:
    Poly adenylate binding protein 4; Poly (A) binding protein, cytoplasmic, 4; PABP4; Inducible poly(A) binding protein; iPABP; Activated platelet protein 1; APP1
    Approved Symbol:
    PABPC4
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 18
    Human (de-) phosphorylation sites: 18; 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):

    None Available

    Associated Genetic Diseases:

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

    HPRD: 04557 Entrez Gene ID: 8761 OMIM ID: 603407 Swissprot Accession: Q13310; Q4VC03;