QuickView for complement c1 (compound)

Name:	Complement C1
Description:	The first complement component to act in the activation of CLASSICAL COMPLEMENT PATHWAY. It is a calcium-dependent trimolecular complex made up of three subcomponents: COMPLEMENT C1Q; COMPLEMENT C1R; and COMPLEMENT C1S at 1:2:2 ratios. When the intact C1 binds to at least two antibodies (involving C1q), C1r and C1s are sequentially activated, leading to subsequent steps in the cascade of COMPLEMENT ACTIVATION.
Synonyms:	Complement, C1; Complement 1; Complement Component 1; Component 1, Complement; C1, Complement; C1 Complement