What Cofactor is Required by Plastocyanin for Proper Activity

Question

What cofactor is required by plastocyanin for proper activity?
A) manganese
B) iron
C) copper
D) magnesium
E) zinc

Accepted Answer

Plastocyanin requires copper as a cofactor for its activity. It is a copper-containing protein that plays a crucial role in the electron transport chain during photosynthesis.