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Description for Protein ASAP2

ArfGAP with SH3 domain, ankyrin repeat and PH domain 2
14 total interacting proteins; 9 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 2/2)
(phosphoproteome: 1; platelet: 3; undefined: 1)
Summary:
This gene encodes a multidomain protein containing an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology (PH) domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal Src homology 3 (SH3) domain. The protein localizes in the Golgi apparatus and at the plasma membrane, where it colocalizes with protein tyrosine kinase 2-beta (PYK2). The encoded protein forms a stable complex with PYK2 in vivo. This interaction appears to be mediated by binding of its SH3 domain to the C-terminal proline-rich domain of PYK2. The encoded protein is tyrosine phosphorylated by activated PYK2. It has catalytic activity for class I and II ArfGAPs in vitro, and can bind the class III Arf ARF6 without immediate GAP activity. The encoded protein is believed to function as an ARF GAP that controls ARF-mediated vesicle budding when recruited to Golgi membranes. In addition, it functions as a substrate and downstream target for PYK2 and SRC, a pathway that may be involved in the regulation of vesicular transport. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
  • PH: Pleckstrin homology domain.
  • ARFGAP: Putative GTP-ase activating proteins for the small GTPase, ARF
  • ANK: ankyrin repeats
  • SH3: Src homology 3 domains
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    None Available
    KEGG - Orthology:
    K12488
    KEGG - Pathway(s):
    hsa04144; hsa04666
    (The yellow boxes represents platelet proteins)
    Nomenclature / Alternative Names:
    Development and differentiation enhancing factor 2; Pap alpha; PAP; PAG3; SHAG1; KIAA0400
    Approved Symbol:
    ASAP2
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 8
    Human (de-) phosphorylation sites: 8; Platelet phosphorylation sites: 1
    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 2 : 0
  • Isoform 1 : 0
    • Additional Identifiers:

    HPRD: 04820 Entrez Gene ID: 8853 OMIM ID: 603817 Swissprot Accession: O43150;