In enzymology, a glyceraldehyde-3-phosphate dehydrogenase (ferredoxin) () is an enzyme that catalyzes the chemical reaction
The three substrates of this enzyme are D-glyceraldehyde-3-phosphate, oxidized ferredoxin, and water. Its products are 3-phospho-D-glyceric acid, reduced ferredoxin and two protons.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with an iron-sulfur protein as acceptor. The systematic name of this enzyme class is D-glyceraldehyde-3-phosphate:ferredoxin oxidoreductase. Other names in common use include GAPOR, glyceraldehyde-3-phosphate Fd oxidoreductase, and glyceraldehyde-3-phosphate ferredoxin reductase.