CVF, Cobra Venom Factor (Naja naja kaouthia) A600

For Research Use Only. Not for use in diagnostic procedures.

Cobra Venom Factor (CVF), sometimes referred to as C3b (Cobra), is the non-toxic, complement-activating component of cobra venom. Like naturally occurring human C3b, CVF forms a complex, or convertase, with complement components Factor B ａnd Factor D. This CVFBbD convertase is capable of activating C3 in a wide variety of species via the alternative complement pathway. CVFBbD convertase is Factor H resistant ａnd is therefore not blocked through the activity of Factor I or CR1 ａnd can convert nearly of the C3 to C3 ａnd C5 fragments. Levels of iC3b, C3a, SC5b-9, C5a ａnd the Factor B cleavage product Bb are all extremely high in CVF treated sera.

This product has been used in an experimental setting to deplete complement activity in vitro and in vivo. For more information contact Quidel Technical Support.

Agarwal, Szalai, A. The Arthus Reaction in Rodents: Species Specific Requirement of Complement, J. Immunol 164:463-468, 2000.

Vandenberg, C.W., et al. In Vivo Anti-complementary activities of the cobra venom factros form Naja ａnd Naja haje, J. Immunol. Methods. 13(6):2870294, 1991.

Rajasinghe, H. et al. Key role of the alternative pathway in hyperacute rejection of rat hearts transplanted into fetal sheep, Transplantation. 63(3), 407-426, 1996.

Koymada, N. Bach, F. Transient complement inhibition plus T Cell immuno-suppression induces long term survival of mouse to rat cardiac xenografts, Transplantation. 6(9)1210-1215, 1998.