Complement C1-Esterase Inhibitor, Human

Native, human C1-esterase. Complent C1-esterase inhibitor purified from human plasma. Single chain glycoprotein present in normal human serum at a concentration of 180 µg/ml. Involved in regulation of complement, coagulation, fibrinolytic and contact (kinin-forming) systems of circulating blood plasma. It is the only known inhibitor of activated C1r and C1s complement enzymes. Persons with either hereditary or acquired deficiencies of C1 esterase inhibitor are susceptible to recurrent attacks of angioedema.

Native, human C1-esterase. Single-chain glycoprotein present in normal human serum at 180 µg/ml. Involved in regulation of complement, coagulation, fibrinolytic and contact (kinin-forming) systems of circulating blood plasma. The only known inhibitor of activated C1r and C1s complement enzymes. The presence of either hereditary or acquired deficiencies of C1 inhibitor produce susceptibility to recurrent attacks of angioedema.

≥80% of C1-esterase inhibitor will bind activated C1s.

Please refer to vial label for lot-specific concentration.

In PBS, pH 7.4, sterile-filtered through a 0.22 µm filter.

Following initial thaw, aliquot and freeze (-70°C).

Prepared from serum that has been shown by certified tests to be negative for HBsAg and for antibodies to HIV and HCV.

Bowen, B., et al. 2001. Clin. Immunol.98, 157.
Davis, A.E. 1988. Ann. Rev. Immunol. 6, 595.

Variables associated with assay conditions will dictate the proper working dilution.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Toxicity: Standard Handling (A)