Ferredoxin-NADP+ Reductase

In 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+ 2 oxidized ferredoxin + NADPH

The 3 substrates of this enzyme are reduced ferredoxin, NADP+, and H+, whereas its two products are oxidized ferredoxin and NADPH. It has a flavin cofactor, FAD.

This enzyme belongs to the family of oxidoreductases, that use iron-sulfur proteins as electron donors and NAD+ or NADP+ as electron acceptors.

This enzyme participates in photosynthesis.