Invitrogen™ CD13 Recombinant Mouse Monoclonal Antibody (9C4)

CD13, also known as ANPEP, is a 150-170 kDa type II transmembrane zinc-binding ectopeptidase expressed on a wide variety of cell types and tissues. It is prominently found on monocytes and granulocytes in the blood, but not on lymphocytes. Additionally, CD13 is expressed on endothelial cells, epithelial cells, fibroblasts, kidney proximal tubules, intestine, placenta, and myeloid leukemia cells. As a metalloprotease, CD13 preferentially catalyzes the removal of neutral amino acids from small peptides, thereby activating or inactivating bioactive peptides. It plays a crucial role in various biological processes, including the degradation of enkephalins and endorphins, terminal degradation of peptides, amino acid scavenging, antigen processing, and the adhesion and migration of cells. CD13 is also involved in extracellular matrix degradation, signal transduction, inflammatory responses, regulation of intercellular contact, cell motility, and vascularization. In the context of disease, CD13 is associated with the protection of leukemic cells against apoptosis and is linked to a poor prognosis in carcinomas. Furthermore, CD13 functions as an aminopeptidase enzyme and serves as an alpha receptor for coronavirus.