D-isomer specific 2-hydroxyacid dehydrogenase, NAD binding domain
This domain is inserted into the catalytic domain, the large dehydrogenase and D-lactate dehydrogenase families in SCOP. N-terminal portion of which is represented by family Pfam:PF00389.
D-isomer specific 2-hydroxyacid dehydrogenase, catalytic domain
This family represents the largest portion of the catalytic domain of 2-hydroxyacid dehydrogenases as the NAD binding domain is inserted within the structural domain.
3-phosphoglycerate dehydrogenase catalyses the oxidation of D-3-phosphoglycerate to 3-phosphohydroxypyruvate with concurrent reduction of NAD+ to NADH. This reaction is the first committed step in serine biosynthesis. In the following steps transamination of 3-phosphohydroxypyruvate with glutamate yields phosphoserine and the action of a phosphatase completes the biosynthesis. In prokaryotes and plants 3-phosphoglycerate dehydrogenase is inhibited by serine in an allosteric fashion.
Defined by 2 residues: GLU:A-268 [auth A-269]HIS:A-291 [auth A-292]