Which form of thioredoxin activates certain Calvin cycle enzymes?
A) reduced
B) oxidized
C) dimeric
D) A and C
E) B and C

Question

Quizplus · Accepted Answer

The reduced form of thioredoxin activates certain Calvin cycle enzymes by transferring a reducing equivalent to disulfide bridges within the enzymes, converting them to their active form. The oxidized form of thioredoxin cannot transfer reducing equivalents and therefore cannot activate the enzymes. The dimeric form is not directly involved in the activation of the enzymes.

Which Form of Thioredoxin Activates Certain Calvin Cycle Enzymes