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204873

Sigma-Aldrich

Complement C1, Human

Complement C1, Human Native, is the first component of the classical complement pathway. It is a calcium-dependent complex of C1q, C1r, and C1s subcomponents.

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.25
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Quality Level

form

liquid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
avoid repeated freeze/thaw cycles

shipped in

wet ice

storage temp.

−70°C

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This Item
204878C1740204882
form

liquid

form

liquid

form

liquid

form

liquid

storage temp.

−70°C

storage temp.

−70°C

storage temp.

−70°C

storage temp.

−70°C

storage condition

OK to freeze, avoid repeated freeze/thaw cycles

storage condition

OK to freeze, avoid repeated freeze/thaw cycles

storage condition

-

storage condition

OK to freeze, avoid repeated freeze/thaw cycles

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

100

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

-

manufacturer/tradename

Calbiochem®

shipped in

wet ice

shipped in

wet ice

shipped in

dry ice

shipped in

wet ice

General description

Native, human C1 complement component. C1 is the first component of the classical complement pathway. It is a calcium dependent complex of C1q, C1r, and C1s subcomponents which are present in the C1 complex at molar ratios of 1:2:2 respectively. Binding of C1 to classical pathway activators results in the conversion of the proenzyme C1s subcomponent to an active C1s enzyme. C1s enzyme cleaves both C4 and C2, resulting in formation of the C3 cleaving enzyme, C4b, C2a, of the classical complement pathway. C1 concentration is based on functional activity measurements relative to a normal serum standard pool.

Packaging

Please refer to vial label for lot-specific concentration.

Warning

Toxicity: Standard Handling (A)

Physical form

In 300 mM NaCl, 50 mM sodium acetate, 50 mM EACA, 25 µM NPGB, 10 mM benzamidine, 10 mM EDTA, 40% glycerol, pH 5.5.

Other Notes

Cooper, N.R. 1985. Adv. Immunol. 37, 151.
Ziccardi, R.J. and Cooper, N.R. 1977. J. Immunol. 118, 2047.

Legal Information

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

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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