C1s B chain is a serine protease that combines with C1q and C1r to form C1, the first component of the classical pathway of the complement system. C1r activates C1s so that it can, in turn, activate C2 and C4.
Gene Name: | complement component 1, s subcomponent |
Family/Subfamily: | Protease , Serine S1 |
Synonyms: | C1S, C1 esterase, ComplementC1S, Complement 1s, Complement C1s subcomponent |
Target Sequences: | NM_001734 NP_001725.1 P09871 |
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