The mouse monoclonal antibody EM-54 recognizes phosphorylated tyrosine 142 of CD3 zeta chain (CD247), which is a component of TCR/CD3 complex expressed on T cells.
CD3 complex is crucial in transducing antigen-recognition signals into the cytoplasm of T cells and in regulating the cell surface expression of the TCR complex. T cell activation through the antigen receptor (TCR) involves the cytoplasmic tails of the CD3 subunits CD3 gamma, CD3 delta, CD3 epsilon and CD3 zeta (CD247). These CD3 subunits are structurally related members of the immunoglobulins super family encoded by closely linked genes on human chromosome 11. The CD3 components have long cytoplasmic tails that associate with cytoplasmic signal transduction molecules. This association is mediated at least in part by a double tyrosine-based motif present in a single copy in the CD3 subunits. CD3 may play a role in TCR-induced growth arrest, cell survival and proliferation.
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Protein Aliases: CD247; CD247 antigen; CD247 antigen, zeta subunit; CD3 antigen, zeta polypeptide; CD3-zeta/eta; CD3Z antigen, zeta polypeptide (TiT3 complex); CD3zeta chain; T-cell antigen receptor complex, zeta subunit of CD3; T-cell receptor T3 eta chain; T-cell receptor T3 zeta chain; T-cell surface glycoprotein CD3 zeta chain; TCR zeta chain
Gene Aliases: 4930549J05Rik; A430104F18Rik; AW552088; CD247; Cd3; Cd3-eta; CD3-ZETA; CD3H; CD3Q; CD3Z; Cd3zeta; IMD25; T3Z; Tcrk; TCRZ