Complement C4b
MESHD015935
The large fragment formed when COMPLEMENT C4 is cleaved by COMPLEMENT C1S. The membrane-bound C4b binds COMPLEMENT C2A, a SERINE PROTEASE, to form C4b2a (CLASSICAL PATHWAY C3 CONVERTASE) and subsequent C4b2a3b (CLASSICAL PATHWAY C5 CONVERTASE).
Synonyms
- C4b, Complement
- C4b Complement
- Complement, C4b
- Complement 4b
- Complement Component 4b
- Component 4b, Complement
Source last updated 2026-05-24T15:26:07.795Z