C3 convertase acts on -: (A) C4b2b, (B) C4b2B3b, (C) C4b, (D) C3
Answer is D. Ans- (D) C3 Reference- Jawetz Melnick & Adelbergs Medical Microbiology - 27E (2016) Page 142. The latter protein (C4b2b) is an active C3 convertase, whichsplits C3 molecules into two fragments: C3a and C3b. C14b2a is known as C3 convertase which activates C3 to C3a (chemotactic and anaphylotoxin) and C3b