enzymology, a ferredoxin-NADP+ reductase (EC 1.18.1.2) abbreviated FNR, is an enzyme that catalyzes the chemical reaction 2 reduced ferredoxin + NADP+ + H+ ⇌
iron-sulfur complex to the enzyme ferredoxin–NADP+ reductase. This enzyme transfers the electron from reduced ferredoxin to NADP+ to complete the reduction to
Entner–Doudoroff pathway, but NADPH production remains the same. Ferredoxin–NADP+ reductase, present in all domains of life, is a major source of NADPH in