CD45RB Rat anti-Mouse, Brilliant Violet 650, Clone: 16A, BD Optibuild™

Description

• The 16A monoclonal antibody specifically recognizes an exon B-dependent epitope of CD45 lycoprotein, which is found at high density on peripheral B cells, T cytotoxic/suppressor cells, subset of T helper cells, and most thymocytes and at low density on macrophages and dendritic cells.The level of CD45RB expression appears to decrease as T lymphocytes progress from naive to memory cells
• In addition, subpopulations of CD4+ T cells which express high and low levels of D45RB have different cytokine secretion profiles and mediate distinct immunological functions
• CD25+ D4+ regulatory T (Treg) lymphocytes which control intestinal inflammation and autoimmunity express low levels of D45RB
• CD45 is a member of the Protein Tyrosine Phosphatase (PTP) family: Its intracellular (COOH-terminal) region contains two PTP catalytic domains, and the extracellular region is highly variable due to alternative splicing of exons (designated A, B, and C, respectively), plus differing levels of glycosylation
• The CD45 isoforms detected in the mouse are cell type-, maturation-, and activation state-specific
• The CD45 isoforms play complex roles in T-cell and B-cell antigen receptor signal transduction
• The antibody was conjugated to BD Horizon™ BV650 which is part of the BD Horizon Brilliant™ Violet family of dyes
• This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405-nm and an acceptor dye with an Em Max at 650-nm
• BD Horizon BV650 can be excited by the violet laser and detected in a filter used to detect APC-like dyes (eg, 660/20-nm filter)
• Due to the excitation and emission characteristics of the acceptor dye, there will be spillover into the APC and Alexa Fluor™ 700 detectors
• However, the spillover can be corrected through compensation as with any other dye combination.