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Description for Protein NAPA

N-ethylmaleimide-sensitive factor attachment protein, alpha
17 total interacting proteins; 17 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 7/1)
(membrane: 1; microparticles: 1; platelet: 4; secretome: 1; undefined: 1)
Summary:
The 'SNARE hypothesis' is a model explaining the process of docking and fusion of vesicles to their target membranes. According to this model, membrane proteins from the vesicle (v-SNAREs) and proteins from the target membrane (t-SNAREs) govern the specificity of vesicle targeting and docking through mutual recognition. Once the 2 classes of SNAREs bind to each other, they form a complex that recruits the general elements of the fusion apparatus, namely NSF (N-ethylmaleimide-sensitive factor) and SNAPs (soluble NSF-attachment proteins), to the site of membrane fusion, thereby forming the 20S fusion complex. Alpha- and gamma-SNAP are found in a wide range of tissues and act synergistically in intra-Golgi transport. The sequence of the predicted 295-amino acid human protein encoded by NAPA shares 37%, 60%, and 67% identity with the sequences of yeast, Drosophila, and squid alpha-SNAP, respectively. Platelets contain some of the same proteins, including NSF, p115/TAP, alpha-SNAP, gamma-SNAP, and the t-SNAREs syntaxin-2 and syntaxin-4, that are used in many vesicular transport processes in other cell types. Platelet exocytosis uses a molecular mechanism similar to that used by other secretory cells, such as neurons, although the proteins used by the platelet and their modes of regulation may be quite different. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
None Available
Gene Ontology:
Gene Ontology Annotations
KEGG - Enzyme ID(s):
None Available
KEGG - Orthology:
None Available
KEGG - Pathway(s):
None Available
Nomenclature / Alternative Names:
Soluble NSF attachment protein; N Ethylmaleimide sensitive factor attachment protein, alpha; SNAPA
Approved Symbol:
NAPA
(De-) Phosphorylations:
Total (de-) phosphorylation sites: 1
Human (de-) phosphorylation sites: 1; 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 1 : 0
    • Additional Identifiers:

    HPRD: 04447 Entrez Gene ID: 8775 OMIM ID: 603215 Swissprot Accession: P54920;