The antibody clone CRC81 is directed against the CD62-antigen, (an integral membrane sialoglycoprotein 140 kDa). It does not interfere with the functional activity of CD62 as an adhesion receptor for neutrophils.
CD62P is a member of the small selectin family of cellular adhesion molecules, which also includes CD62E and CD62L. Its structure, similar to the other members of the selectin family, consists of an N terminal lectin like domain of C type, followed by an epidermal growth factor like motif, a series of short consensus repeats, a transmembrane domain, and a cytoplasmic tail. The CD62P antigen is a 140 kDa glycoprotein, located in the alpha granules and the dense granules of platelets and endothelial cells. Activation of these cells results in rapid mobilization of CD62P from the storage granules to the cell surface. Activated platelets have a stable CD62P expression, while the endothelial cells lose CD62P expression within 1 h of activation, because of endocytosis of the molecule. CD62P is also expressed on megakaryocytes, but resting platelets and endothelial cells show no surface staining of CD62P.Synonyms: CD62 antigen-like family member P, GMP-140, GMRP, GRMP, Granule membrane protein 140, LECAM3, Leukocyte-endothelial cell adhesion molecule 3, PADGEM, SELP