CD3G polyclonal antibody

The T cell antigen receptor (TCR) recognizesforeign antigens and translates such recognition eventsinto intracellularsignalsthat elicit a change in the cell froma dormant to an activated state.Much of this signaling processcan be attributed to a multisubunitcomplex of proteins that associates directly with the TCR. Thiscomplex has been designated CD3 (cluster of differentiation 3) . It iscomposed of five invariant polypeptide chainsthat associate to form three dimers: a heterodimer of γ and ε chains (γε), a heterodimer of δ and ε chains (δε) and a homodimer of two ζ chains (ζζ) or a heterodimer of ζ and η chains (ζη) . The ζ and η chains are encoded bythe same gene but differ in theircarboxyl-terminal ends due to an alternative splicing event. The γ, ε and δ chains each contain a single copy of a conserved immunoreceptor tyrosine-based activationmotif (ITAM) . In contrast, the ζ chain containsthree consecutive copies of the same motif. Phosphorylated ITAMs act as docking sitesfor protein kinases such as ZAP-70 and Syk and are also capable of regulating theirkinase activity. The crystalstructure of ZAP-70’s SH2 domains bound to the ζ chain ITAMs has been solved.

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE) .

Western blot (WB) analysis of CD3G polyclonal antibody at 1:500 dilution Lane1:HEK293T whole cell lysate Lane2:Raw264.7 whole cell lysate Lane3:H9C2 whole cell lysate