The BZ2E3 monoclonal antibody specifically binds to CCRL2 (C-C chemokine receptor-like 2) which is also known as Lipopolysaccharide-inducible C-C chemokine receptor (L-CCR/Lccr). CCRL2 is a chemokine receptor-like, 7-transmembrane protein that can bind CCL19 or the nonchemokine chemoattractant, chemerin/RARRES2. CCRL2 is expressed by a variety of cell types including mast cells, macrophages and some endothelial cells. CCRL2 appears to play various roles in regulating chemokine activities, e.g., by binding and internalizing excess local levels of the CCL19/MIP-3β chemokine. Alternatively, endothelial cell-expressed CCRL2 can bind and present the chemerin/RARRES2 chemoattractant to lymphoid cells that express the functional signaling receptor, CMKLR1, and promote their adhesion.
The antibody was conjugated to BD Horizon BV421 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max near 407 nm and Em Max near 421 nm, BD Horizon BV421 can be excited by the violet laser (405 nm) and detected with a 450/50 nm filter. BD Horizon BV421 conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue™ conjugates. Due to nearly identical excitation and emission properties but different spillover characteristics, BD Horizon BV421, Pacific Blue™, and BD Horizon V450 cannot be used simultaneously.
