CD4 (RM4-5) Rat mAb (PE Conjugate) #26589
- F
Supporting Data
REACTIVITY | M |
SENSITIVITY | Endogenous |
MW (kDa) | |
Source/Isotype | Rat IgG2a kappa |
Application Key:
- F-Flow Cytometry
Species Cross-Reactivity Key:
- M-Mouse
Product Information
Product Description
Product Usage Information
For optimal flow cytometry results, we recommend 0.25 μg of antibody per test.
Application | Dilution |
---|---|
Flow Cytometry (Fixed/Permeabilized) | 1:80 |
Flow Cytometry (Live) | 1:80 |
Storage
Protocol
Specificity / Sensitivity
CD4 (RM4-5) Rat mAb (PE Conjugate) recognizes endogenous levels of total CD4 protein. This antibody detects an epitope within the extracellular domain.
Species Reactivity:
Mouse
Source / Purification
This monoclonal antibody was purified from tissue culture supernatant via affinity chromatography. The purified antibody was conjugated under optimal conditions, with unreacted dye removed from the preparation.
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).
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