The C3 II.1 monoclonal antibody specifically recognizes CD49c which is also known as Integrin alpha 3 (α3 integrin). CD49c is encoded by ITGA3 (Integrin subunit alpha 3). CD49c is a 150 kDa type I transmembrane glycoprotein which non-covalently associates with integrin β1 (CD29) to form the α3β1 (CD49c/CD29, VLA-3) complex. CD49c is expressed mostly on endothelial and epithelial cells (basal epidermal layers). It is not expressed on platelets and is expressed weakly on peripheral blood leucocytes, including T cells, B cells, and monocytes. The CD49c/CD29 complex serves as an adhesive receptor for kalinin or epiligrin. This interaction may be important for thymocyte interaction with thymic epithelium.
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.