MeSH definition : Complement activation initiated by the interaction of microbial ANTIGENS with COMPLEMENT
C3B. When COMPLEMENT FACTOR B binds to the membrane-bound C3b, COMPLEMENT FACTOR D
cleaves it to form alternative C3 CONVERTASE (C3BBB) which, stabilized by COMPLEMENT
FACTOR P, is able to cleave multiple COMPLEMENT C3 to form alternative C5 CONVERTASE
(C3BBB3B) leading to cleavage of COMPLEMENT C5 and the assembly of COMPLEMENT MEMBRANE
ATTACK COMPLEX.;
MeSH synonym : complement activation pathway, alternative; properdin pathway; alternative complement activation pathway; alternative complement pathway;
Complement activation initiated by the interaction of microbial ANTIGENS with COMPLEMENT
C3B. When COMPLEMENT FACTOR B binds to the membrane-bound C3b, COMPLEMENT FACTOR D
cleaves it to form alternative C3 CONVERTASE (C3BBB) which, stabilized by COMPLEMENT
FACTOR P, is able to cleave multiple COMPLEMENT C3 to form alternative C5 CONVERTASE
(C3BBB3B) leading to cleavage of COMPLEMENT C5 and the assembly of COMPLEMENT MEMBRANE
ATTACK COMPLEX.