CD247 (CD3 zeta) Monoclonal Antibody (6B10.2), APC, eBioscience™, Invitrogen™

Beschreibung

Description: This 6B10.2 monoclonal antibody reacts with human CD247, which is also known as the invariant zeta chain. The CD3 complex is composed of three monomeric chains (gamma, delta, and epsilon) and the invariant zeta chain, which exists as a homodimer or as a heterodimer with the epsilon subunit. Together with the T cell antigen receptor (TCR), the CD3 gamma, delta, epsilon, and zeta chains comprise the TCR/CD3 complex. CD3 zeta is expressed on immature and mature thymocytes, as well as T lymphocytes and NK cells. Signal transduction during T cell activation is mediated by tyrosine phosphorylation of cytoplasmic immunoreceptor tyrosine-based activation motifs (ITAMs) present on the zeta chain. The 6B10.2 monoclonal antibody recognizes a transmembrane epitope of the CD3 zeta chain. Therefore, flow cytometric analysis with this antibody requires intracellular staining. In addition, this antibody has been reported to recognize the zeta chain as a homodimer but not as a monomer. Applications Reported: This 6B10.2 antibody has been reported for use in flow cytometric analysis. Applications Tested: This 6B10.2 antibody has been pre-diluted and tested by intracellular staining and flow cytometric analysis of normal human peripheral blood cells using the Foxp3/Transcription Factor Staining Buffer Set (Product No. 00-5523-00) and protocol.

CD3z 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. 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, and 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. The CD3 antigen is present on 68-82% of normal peripheral blood lymphocytes, 65-85% of thymocytes and Purkinje cells in the cerebellum. It is never expressed on B or NK cells. Decreased percentages of T lymphocytes may be observed in some autoimmune diseases. Diseases associated with CD3z include Immunodeficiency 25 and T-B+ Severe Combined Immunodeficiency Due To Cd3delta/Cd3epsilon/Cd3zeta.