The RMT2-26 monoclonal antibody specifically recognizes T cell immunoglobulin and mucin domain-2 (TIM-2) which is also known as T-cell membrane protein 2, TIMD-2, or Tim2. TIM-2 is an ~55 kDa type I transmembrane glycoprotein that is encoded by Timd2 (T cell immunoglobulin and mucin domain containing 2) which belongs to the immunoglobulin gene superfamily. TIM-2 contains extracellular IgV and mucin domains and a cytoplasmic region with a conserved tyrosine phosphorylation motif which is involved in transmembrane signaling. A human ortholog for mouse TIM-2 has not been identified. TIM-2 is reportedly expressed on B cells with higher levels on activated B cells and germinal center B cells, type-2 T helper (Th2) cells, oligodendrocytes, and epithelial cells in the kidney and liver. It may serve as a receptor for Semaphorin 4A (Sema4A) or the heavy chain of ferritin (H-ferritin). The RMT2-26 antibody can reportedly block the binding of H-ferritin to TIM-2.
The antibody was conjugated to BD Horizon Red 718, which has been developed exclusively for BD Biosciences as a better alternative to Alexa Fluor® 700. BD Horizon Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor® 700.