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Tyrosine-protein phosphatase non-receptor type 1 also known as protein-tyrosine phosphatase 1B (PTP1B) is an enzyme that is the founding member of the protein tyrosine phosphatase (PTP) family. In humans it is encoded by the PTPN1 gene . [ 5 ]
Protein tyrosine phosphatases (EC 3.1.3.48, systematic name protein-tyrosine-phosphate phosphohydrolase) are a group of enzymes that remove phosphate groups from phosphorylated tyrosine residues on proteins: [a protein]-tyrosine phosphate + H 2 O = [a protein]-tyrosine + phosphate. Protein tyrosine (pTyr) phosphorylation is a common post ...
Its interactions with PTP1B, along with the proteins 14-3-3β, Raf-1, c-Src, PKA, and DAGKα, determine the mechanisms by which it influences the mitogen-activated protein kinase (MAPK) pathway. [8] PTPIP51 has been observed to induce apoptosis by disrupting the mitochondrial membrane potential , resulting in the release of cytochrome c . [ 12 ]
The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle , and oncogenic transformation.
VE-PTP is a member of the classical protein tyrosine phosphatase (PTP) family. The deletion of the gene in mouse models was shown to be embryonically lethal, [7] thus indicating that it is important for vasculogenesis and blood vessel development.
Tyrosine-protein phosphatase non-receptor type 2 is an enzyme that in humans is encoded by the PTPN2 gene. [5] [6] The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. Members of the PTP family share a highly conserved catalytic motif, which is essential for the catalytic activity.
Then, when a protein with a phosphorylated tyrosine binds, the SH2 domain changes orientation and SHP-2 is activated. [38] SHP-2 is then able to remove phosphate groups from JAKs, STATs and the receptors themselves - so, like SHP-1, can prevent the phosphorylation needed for the pathway to continue, and therefore inhibit JAK-STAT signalling.
The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. Protein tyrosine phosphatases are protein enzymes that remove phosphate moieties from tyrosine residues on other proteins. Tyrosine kinases are enzymes that add phosphates to tyrosine residues, and are the opposing enzymes to PTPs.