Complement C3 Convertase, Classical Pathway

**Definition:** A serine protease that cleaves multiple COMPLEMENT 3 into COMPLEMENT 3A (anaphylatoxin) and COMPLEMENT 3B in the CLASSICAL COMPLEMENT ACTIVATION PATHWAY. It is a complex of COMPLEMENT 4B and COMPLEMENT 2A (C4b2a).

**Tree numbers:** - D12.776.124.486.274.045.387.750.500

**Synonyms:** - Classical Pathway C3 Convertase - C3 Convertase (C4b2a) - Classical C3 Convertase