Sizes Available: 1000 µg/vial Concentration: 1.0 mg/mL (see Certificate of Analysis for actual concentration)
Form: Frozen liquid Activity: > 1,000,000 C1H50 units/mg
Purity: > 98% by SDS PAGE
Buffer: 10 mM HEPES, 300 mM NaCl, pH 7.2
Extinction Coeff. A280 nm = 0.68 at 1.0 mg/ml for pure C1q
Molecular weight: 410,000 Da (18 chains)
Preservative: None, 0.22 µm filtered.
Source: Normal human serum (shown by certified tests to be negative for HBsAg, HTLV-I/II, STS, and for antibodies to HCV, HIV-1 and HIV-II).
Precautions: Use normal precautions for handling human blood products.