Description: This RR3-15 monoclonal antibody reacts with the mouse T-cell receptor (TCR) V beta 11 chain. Composed of an alpha and beta chain, TCR specificity is typically determined by Va, Ja, Vb, Db, and Jb gene rearrangement. The RR3-15 antibody recognizes the V beta 11 chain on T cells from mouse strains with the b haplotype in the Tcrb gene complex, including C57BL/6 and B10, but is absent in mice with the a haplotype, such as C57L, SJL, and SWR. In addition, reports indicate that Vbeta11+ T cells are eliminated in mice bearing the MHC Class II I-E molecule. Finally, V beta 11+CD4+ T cells have been associated with graft-versus-host disease (GVHD) severity.
The RR3-15 antibody has been reported to activate V beta 11+ T cells.