PTP-PEST Antibody – Mouse Monoclonal

The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP contains a C-terminal PEST motif, which serves as a protein-protein interaction domain, and may regulate protein intracellular half-life. This PTP was found to bind and dephosphorylate the product of the oncogene c-ABL and thus may play a role in oncogenesis. This PTP was also shown to interact with, and dephosphorylate, various products related to cytoskeletal structure and cell adhesion, such as p130 (Cas), CAKbeta/PTK2B, PSTPIP1, and paxillin. This suggests it has a regulatory role in controlling cell shape and mobility. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Oct 2008]

PTP-PEST: Dephosphorylates cellular tyrosine kinases, including PTK2B/PYK2, and thereby regulates signaling via PTK2B/PYK2. Interacts with TGFB1I1. Interacts with PSTPIP1. Interacts with PTK2B/PYK2. Interacts with LPXN. Belongs to the protein-tyrosine phosphatase family. Non-receptor class 4 subfamily.

Protein type: EC 3.1.3.48; Motility/polarity/chemotaxis; Protein phosphatase, tyrosine (non-receptor)

Chromosomal Location of Human Ortholog: 7q11.23

Cellular Component: cell projection; cytoplasm; plasma membrane; podosome; cytosol; cell junction

Molecular Function: protein binding; non-membrane spanning protein tyrosine phosphatase activity; SH3 domain binding

Biological Process: protein amino acid dephosphorylation