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233552-M

Sigma-Aldrich

Cobra Venom Factor, Naja naja kaouthia

Cobra Venom Factor, Naja naja kaouthia, is a native cobra venom factor. Glycoprotein composed of three non-identical disulfide-bonded subunits of 68, 48, and 30 kDa.

Synonym(s):

Cobra Venom Anticomplementary Protein

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About This Item

UNSPSC Code:
12352202

Quality Level

Assay

≥95% (SDS-PAGE)

form

liquid

specific activity

≥250 units/mL

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
avoid repeated freeze/thaw cycles

foreign activity

Phospholipase, none detected

storage temp.

−70°C

General description

Native cobra venom factor from Naja naja kaouthia. Glycoprotein composed of three non-identical disulfide-bonded subunits with M.W. of 68 kDa (α), 48 kDa (β), and 30 kDa (γ). Cobra venom factor (CVF) is a structural and functional analog of cobra, as well as mammalian C3. Thus, in the presence of Factor B, Factor D, and Mg2+, CVF can form a stable CVF,Bb complex that is a C3/C5 convertase enzyme; however, the CVF,Bb complex is not susceptible to regulation by Factors H and I. Four to six µg of purified CVF are equal to 1.0 unit of functional activity as measured by the method of Cochrane, et al.
Native cobra venom factor from Naja naja kaouthia. Glycoprotein composed of three nonidentical disulfide-bound subunits with M.W. of 68,000 (α), 48,000 (β), and 30,000 (γ). Cobra Venom Factor (CVF) is a structural and functional analog of cobra, as well as mammalian C3. In the presence of Factor B, Factor D, and Mg2+, CVF can form a stable CVF, Bb complex which is a C3/C5 convertase enzyme; however, the CVF,Bb complex is not susceptible to regulation by Factors H and I. Four to six µg of purified CVF is equal to 1.0 unit of functional activity as measured by the method of Cochrane, et al.

Warning

Toxicity: Harmful (C)

Other Notes

Bogers, W.M., et al. 1993. Eur. J. Immunol.23, 433.
Fritzinger, D.C., et al. 1992. J. Immunol. 149, 3554.
Muller, B. and Muller-Ruchholtz, W. 1987. Leuk. Res.11, 461.
Vogel, C.W. and Muller-Eberhard, H.J. 1984. J. Immunol. Methods73, 203.
Cochrane, C.G., et al. 1970. J. Immunol. 105, 55.
Ballows, M. and Cochrane, C.G. 1969. J. Immunol.103, 944.

Legal Information

Not available for sale outside the United States.
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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