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Acts as negative regulator of T-cell receptor (TCR) signaling by direct dephosphorylation of the Src family kinases LCK and FYN, ITAMs of the TCRz/CD3 complex, as well as ZAP70, VAV, VCP and other key signaling molecules. Associates with and probably dephosphorylates CBL. Dephosphorylates LCK at its activating 'Tyr-394' residue. Dephosphorylates ZAP70 at its activating 'Tyr-493' residue. Dephosphorylates the immune system activator SKAP2.
Gene Name: | protein tyrosine phosphatase, non-receptor type 22 (lymphoid) |
Family/Subfamily: | Protein Phosphatase , NT4 |
Synonyms: | PTPN22, 70zpep, Lymphoid phosphatase, LYP, PEST-domain phosphatase, LYP2, LYP1, PEP, PTPN8 |
Target Sequences: | NM_015967 NP_057051.3 Q9Y2R2 |
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