Factor H, a complement regulatory protein in plasma, binds C3b and

(A) competes with factor B to displace Bb from convertase.
(B) initiates the catabolism of C3b into inactive products.
(C) then binds to C3bBb convertase.
(D) acts as a cofactor for factor I.

Ask Ai

Sourav PanAugust 18, 2024

Answered

Answer: (D) acts as a cofactor for factor I.

Explanation:
Factor H regulates complement activation by binding to C3b, making it susceptible to cleavage by factor I, which inactivates C3b.

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