Aliases for PTPN22 Gene
External Ids for PTPN22 Gene
Previous HGNC Symbols for PTPN22 Gene
Previous GeneCards Identifiers for PTPN22 Gene
This gene encodes of member of the non-receptor class 4 subfamily of the protein-tyrosine phosphatase family. The encoded protein is a lymphoid-specific intracellular phosphatase that associates with the molecular adapter protein CBL and may be involved in regulating CBL function in the T-cell receptor signaling pathway. Mutations in this gene may be associated with a range of autoimmune disorders including Type 1 Diabetes, rheumatoid arthritis, systemic lupus erythematosus and Graves' disease. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Mar 2009]
GeneCards Summary for PTPN22 Gene
PTPN22 (Protein Tyrosine Phosphatase, Non-Receptor Type 22 (Lymphoid)) is a Protein Coding gene. Diseases associated with PTPN22 include systemic lupus erythematosus and vogt-koyanagi-harada disease. Among its related pathways are PAK Pathway and CD28 co-stimulation. GO annotations related to this gene include SH3 domain binding and kinase binding. An important paralog of this gene is PTPN6.
UniProtKB/Swiss-Prot for PTPN22 Gene
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 (PubMed:16461343, PubMed:18056643). Associates with and probably dephosphorylates CBL. Dephosphorylates LCK at its activating Tyr-394 residue (PubMed:21719704). Dephosphorylates ZAP70 at its activating Tyr-493 residue (PubMed:16461343). Dephosphorylates the immune system activator SKAP2 (PubMed:21719704). Positively regulates toll-like receptor (TLR)-induced type 1 interferon production (PubMed:23871208). Promotes host antiviral responses mediated by type 1 interferon (By similarity). Regulates NOD2-induced pro-inflammatory cytokine secretion and autophagy (PubMed:23991106).