Description
Product Characteristics:
APS (adapter protein with Pleckstrin homology and Src homology 2 domains) is a member of the Lnk family, an adaptor protein that is involved in B cell signaling, insulin signaling and cytoskeletal reorganisation. A PH and an SH2 domain containing adaptor protein that links activated tyrosine kinases to signaling pathways. It is tyrosine phosphorylated by JAK2, KIT and other kinases during B cell receptor stimulation of many different cytokines, chemokines and leukokines. APS has been shown to inhibit the JAK STAT pathway in collaboration with cCbl.
Synonyms: Sh2b2, Aps, SH2B adapter protein 2, SH2 and PH domain-containing adapter protein APS, Adapter protein with pleckstrin homology and Src homology 2 domains, SH2B2_RAT.
Target Information: Plasma prekallikrein is a glycoprotein that participates in the surface-dependent activation of blood coagulation, fibrinolysis, kinin generation and inflammation. It is synthesized in the liver and secreted into the blood as a single polypeptide chain. Plasma prekallikrein is converted to plasma kallikrein by factor XIIa by the cleavage of an internal Arg-Ile bond. Plasma kallikrein therefore is composed of a heavy chain and a light chain held together by a disulphide bond. The heavy chain originates from the amino-terminal end of the zymogen and contains 4 tandem repeats of 90 or 91 amino acids. Each repeat harbors a novel structure called the apple domain. The heavy chain is required for the surface-dependent pro-coagulant activity of plasma kallikrein. The light chain contains the active site or catalytic domain of the enzyme and is homologous to the trypsin family of serine proteases. Plasma prekallikrein deficiency causes a prolonged activated partial thromboplastin time in patients. [provided by RefSeq, Jul 2008]