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Description for Protein PF4

platelet factor 4
12 total interacting proteins; 4 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 10/2)
(alpha granules: 1; membrane: 1; microparticles: 1; platelet: 6; secretome: 2; undefined: 1)
Summary:
Platelet factor-4 is a 70-amino acid protein that is released from the alpha-granules of activated platelets and binds with high affinity to heparin. Its major physiologic role appears to be neutralization of heparin-like molecules on the endothelial surface of blood vessels, thereby inhibiting local antithrombin III activity and promoting coagulation. As a strong chemoattractant for neutrophils and fibroblasts, PF4 probably has a role in inflammation and wound repair (Eisman et al., 1990 [PubMed 1695112]).[supplied by OMIM] (PubMed Links)
Domains and Motifs:
  • SP: Signal Peptide
  • SCY: Intercrine alpha family (small cytokine C-X-C) (chemokine CXC).
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    None Available
    KEGG - Orthology:
    K05407
    KEGG - Pathway(s):
    hsa04060; hsa04062
    (The yellow boxes represents platelet proteins)
    Nomenclature / Alternative Names:
    Small inducible cytokine subfamily B member 4; SCYB4; Oncostatin A; Iroplact
    Approved Symbol:
    PF4
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 0
    No human (de-) phosphorylation sites; 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):

  • Drotrecogin alfa(db)

    Associated Genetic Diseases:

    None Available
    		• Predicted Transmembrane Domains:
  • Isoform 1 : 1
    • Additional Identifiers:

    HPRD: 01426 Entrez Gene ID: 5196 OMIM ID: 173460 Swissprot Accession: P02776;