CD4 Antibody

This antibody is also available with the following conjugates:
AF350, AF405L, AF405M, AF405S, AF488, AF514, AF532, AF546, AF555, AF568, AF594, AF610, AF635, AF647, AF680, AF700, AF750, AF790, APC, AP, Biotin, Cy3, Cy5.5, Cy5, Cy7, FITC, HRP, PE, Magnetic beads (1 um, 2.8 um, 3 um, 4.5 um, 5 um, 10 um, 15 um, 20 um, 30 um, or different size option)
Please contact sales@hoelzel.de for pricing and availability.

55kDa

Affinity purification

Cluster of Differentiation 4 (CD4) is a glycoprotein composed of an amino-terminal extracellular domain (four domains: D1-D4 with Ig-like structures), a transmembrane part and a short cytoplasmic tail. CD4 is expressed on the surface of T helper cells, regulatory T cells, monocytes, macrophages and dendritic cells, and plays an important role in the development and activation of T cells. On T cells, CD4 is the co-receptor for the T cell receptor (TCR), and these two distinct structures recognize the Antigen–Major Histocompatibility Complex (MHC). Specifically, the D1 domain of CD4 interacts with the beta2-domain of the MHC class II molecule. CD4 ensures specificity of the TCR–antigen interaction, prolongs the contact between the T cell and the antigen presenting cell and recruits the tyrosine kinase Lck, which is essential for T cell activation (1).