CST, 40568S, CD4 (MSVA-004R) Rabbit Monoclonal Antibody (Alexa Fluor® 647 Conjugate)

Monoclonal Antibody for studying CD4. Validated for Immunohistochemistry (Paraffin). Highly specific and rigorously validated in-house, CD4 (MSVA-004R) Rabbit Monoclonal Antibody (Alexa Fluor^® 647 Conjugate) (CST #40568) is ready to ship. Product Usage Information Immunohistochemistry (Paraffin): 1:50 Storage Supplied in PBS (pH 7.2), less than 0.1% sodium azide, and 2 mg/mL BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze. Protocol Available protocols: Immunohistochemistry (Paraffin) Specificity / Sensitivity CD4 (MSVA-004R) Rabbit Monoclonal Antibody (Alexa Fluor Species Reactivity: Human Source / Purification Monoclonal antibody is produced by immunizing animals with recombinant human CD4 protein. Background 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 β2-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). Alternate Names CD4; CD4 antigen (p55); CD4 molecule; CD4 receptor; CD4mut; T-cell surface antigen T4/Leu-3; T-cell surface glycoprotein CD4 Specification REACTIVITY: H SENSITIVITY: Endogenous Source/Isotype: Rabbit IgG