The LB-2 monoclonal antibody specifically binds to CD54 which is also known as Intercellular adhesion molecule-1 (ICAM-1). CD54 is an 85-110 kDa type I transmembrane glycoprotein that belongs to the immunoglobulin supergene family. A soluble form of CD54 can also be found in biological fluids. CD54 is expressed on endothelial cells and both resting (weak) and activated (moderate) T and B lymphocytes and monocytes. CD54 is expressed on human myeloma cells, Burkitt's lymphoma cells, erythroleukemia cells, and B-lymphoblastoid cells. CD54 is a ligand for LFA-1 (CD11a/CD18) and Mac-1 (CD11b/CD18) and can act as a receptor for Rhinoviruses. The CD54 adhesion molecule plays roles in inflammatory and immune responses and neoplasia.
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.