PE Anti-Mouse CD4 (RM4-5)
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The RM4-5 antibody reacts with mouse CD4, a 55 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 beta2-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 is typically expressed on thymocytes, certain mature T cell populations such as Th17 and T regulatory (Treg) cells, as well as on dendritic cells.
The RM4-5 antibody is widely used as a phenotypic marker for CD4 expression. If used together, the RM4-5 antibody and an alternative antibody, Anti-Mouse CD4 clone GK1.5, will “compete” for binding, i.e. RM4-5 antibody is able to block GK1.5 antibody binding to cells. In contrast, RM4-5 antibody does not block the binding of Anti-Mouse CD4 clone RM4-4 to cells.
Clark NM, Martinez LM, Murdock S, deLigio JT, Olex AL, Effi C, Dozmorov MG, Bos PD. Regulatory T Cells Support Breast Cancer Progression by Opposing IFN-γ-Dependent Functional Reprogramming of Myeloid Cells. Cell Rep. 2020 Dec 8;33(10):108482. doi: 10.1016/j.celrep.2020.108482. PMID: 33296659.
Ishida Y, Kuninaka Y, Nosaka M, et al. Prevention of CaCl2-induced aortic inflammation and subsequent aneurysm formation by the CCL3-CCR5 axis. Nat Commun. 2020 Nov 25;11(1):5994. doi: 10.1038/s41467-020-19763-0. PMID: 33239616.
|Name||PE Anti-Mouse CD4 (RM4-5)|
|Alternative Names||L3T4, T4|
|Isotype||Rat IgG2a, κ|