In enzymology, a glyceraldehyde-3-phosphate dehydrogenase (ferredoxin) () is an

enzyme Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different molecule ...

that

catalyzes Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycl ...

the

chemical reaction A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and break ...

:D-glyceraldehyde-3-phosphate + H₂O + 2 oxidized ferredoxin

\rightleftharpoons

3-phospho-D-glycerate + 2 H⁺ + 2 reduced ferredoxin The 3 substrates of this enzyme are D-glyceraldehyde-3-phosphate, H₂O, and oxidized

ferredoxin Ferredoxins (from Latin ''ferrum'': iron + redox, often abbreviated "fd") are iron–sulfur proteins that mediate electron transfer in a range of metabolic reactions. The term "ferredoxin" was coined by D.C. Wharton of the DuPont Co. and applied ...

, whereas its 3 products are 3-phospho-D-glycerate, H⁺, and reduced ferredoxin. This enzyme belongs to the family of

oxidoreductase In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, the reductant, also called the electron donor, to another, the oxidant, also called the electron acceptor. This group of enzymes usually ...

s, specifically those acting on the aldehyde or oxo group of donor with an iron-sulfur protein as acceptor. The

systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ...

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.

References

* * EC 1.2.7 Enzymes of unknown structure {{1.2-enzyme-stub