Seems to act on Cbl. May play a role in regulating the function of Cbl and its associated protein kinases. Acts as negative regulator of T-cell receptor (TCR) signaling. Dephosphorylates and inactivates the SRC family kinases. Interacts with CSK. Interacts with LPXN. Predominantly expressed in lymphoid tissues and cells. Isoform 1 is expressed in thymocytes and both mature B and T-cells. Down-regulated by phosphorylation. Belongs to the protein-tyrosine phosphatase family. Non-receptor class 4 subfamily. 5 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Protein phosphatase, tyrosine (non-receptor); EC 18.104.22.168; Motility/polarity/chemotaxis
Cellular Component: internal side of plasma membrane; perinuclear region of cytoplasm; cytoplasm; nucleus
Molecular Function: protein binding; ubiquitin protein ligase binding; phosphoric monoester hydrolase activity; protein tyrosine phosphatase activity; kinase binding; SH3 domain binding
Biological Process: regulation of B cell receptor signaling pathway; negative regulation of JNK activity; negative regulation of autophagy; positive regulation of toll-like receptor 3 signaling pathway; positive regulation of toll-like receptor 4 signaling pathway; negative regulation of T cell receptor signaling pathway; negative regulation of tumor necrosis factor production; protein amino acid dephosphorylation; regulation of innate immune response; lipopolysaccharide-mediated signaling pathway; regulation of natural killer cell proliferation; positive regulation of interferon type I production; autophagy; negative regulation of T cell activation; T cell differentiation
LTP: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.