The OKT4 antibody reacts with human CD4, a 59 kDa protein which acts as a co-receptor for the T cell receptor (TCR) in its interaction with MHC Class II molecules on antigen-presenting cells. The extracellular domain of CD4 binds to the beta-2 domain of MHC Class II, while its cytoplasmic tail provides a binding site for the tyrosine kinase lck, facilitating the signaling cascade that initiates T cell activation. CD4, and co-receptors CCR5 and CXCR4, may also be utilized by HIV-1 to enter T cells. Human CD4 is typically expressed on thymocytes, some mature T cell populations such as Th17 and T regulatory (Treg) cells, as well as on dendritic cells.The OKT4 antibody is widely used as a phenotypic marker for CD4 expression.
Anti-CD4 Antibody (Monoclonal) was produced by repeated immunizations with CD4 antigen.
來源宿主
Mouse
反應(yīng)性
H. sapiens (Human)
保存建議
Store vial at 4° C prior to opening.? This product is stable for several weeks at 4° C as an undiluted liquid.? Dilute only prior to immediate use.? DO NOT FREEZE. This product is light sensitive.