Gap2 has a major role in carbon fixation as a component of the Calvin cycle. Catalyzes the oxidative phosphorylation of glyceraldehyde 3-phosphate (G3P) to 1,3-bisphosphoglycerate (BPG) using the cofactor NADP. The first reaction step involves the formation of a hemiacetal intermediate between G3P and a cysteine residue, and this hemiacetal intermediate is then oxidized to a thioester, with concomitant reduction of NADP to NADPH. The reduced NADPH is then exchanged with the second NAD, and the thioester is attacked by a nucleophilic inorganic phosphate to produce BPG.

Belongs to the glyceraldehyde-3-phosphate dehydrogenase family.

337 amino acids

MIRVAINGFGRIGRNFARCWLGRENTNIELVAVNDTSDPRTNAHLLKYDSMLGKLKNVDITADDNSITVNGKTIKCVSDRNPENLPWKEWEIDLIIEATGVFVSKEGATKHINAGAKKVLITAPGKNEDGTFVMGVNHHDYDHNLHNIISNASCTTNCLAPIAKVLNDKFGIIKGSMTTTHSYTGDQRLLDASHRDLRRARAAAINIVPTSTGAAKAVALVIPELKGKLNGVALRVPTPNVSMVDFVVQVEKRTITEEVNQALKDASEGPLKGILDYSELQLVSSDYQGTDASSIVDANLTLVMGNDLVKVMAWYDNEWGYSQRVLDLAELVAEKWV

36.9 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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