PTPRC antibody, si:dkeyp-47c5.1 antibody, B220 antibody, CD45 antibody, CD45R antibody, GP180 antibody, L-CA antibody, LCA antibody, LY5 antibody, T200 antibody, Cd45 antibody, Ly-5 antibody, Lyt-4 antibody, loc antibody, Lca antibody, RT7 antibody, cd45 antibody, protein tyrosine phosphatase, receptor type C antibody, protein tyrosine phosphatase, receptor type, C antibody, receptor-type tyrosine-protein phosphatase C antibody, PTPRC antibody, ptprc antibody, LOC100074271 antibody, Ptprc antibody
背景
CD45 is a 180-240 kD single chain type I membrane glycoprotein also known as leukocyte common antigen (LCA) and T200. It is a tyrosine phosphatase expressed on the plasma membrane of all hematopoietic cells, except erythrocytes and platelets. CD45 is a signaling molecule that regulates a variety of cellular processes including cell growth, differentiation, cell cycle, and oncogenic transformation. CD45 plays a critical role in T and B cell antigen receptor-mediated activation by dephosphorylating substrates including p56Lck, p59Fyn, and other Src family kinases. CD45 non-covalently associates with lymphocyte phosphatase-associated phosphoprotein (LPAP) on T and B lymphocytes. CD45 has been reported to bind galectin-1 and to be associated with several other cell surface antigens including CD1, CD2, CD3, and CD4.