Factor P Antibody (Monoclonal - #1)

The function of Properdin (Factor P) is to stabilize the alternative pathway convertase. Its binding to C3bBb extends the half-life of the complex. The concentration in plasma is approximately 20 μg/mL. Factor P has a molecular weight of 224 kDa, consisting of four identical chains of approximately 53 kDa molecular weight. The alternative complement pathway provides innate protection against microbial agents in the absence of specific antibody. The activation of this complement pathway can be triggered by a variety of substances, including microbial polysaccharides or lipids, gram-negative bacterial lipopolysaccharides, and surface determinants present on some viruses, parasites, virally infected mammalian cells and cancer cells. In autoimmune diseases, the alternative complement pathway may contribute directly to tissue damage.