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NAD-binding protein
3-Hydroxyisobutyrate is a central metabolite in the valine catabolic pathway, and is reversibly oxidised to methylmalonate semi-aldehyde by a specific dehydrogenase belonging to the 3-hydroxyacid dehydrogenase family. The reaction is NADP-dependent and this region of the enzyme binds NAD. The NAD-binding domain of 6-phosphogluconate dehydrogenase adopts an alpha helical structure [1]. [1]. 16126223. Crystal structure of novel NADP-dependent 3-hydroxyisobutyrate dehydrogenase from Thermus thermophilus HB8. Lokanath NK, Ohshima N, Takio K, Shiromizu I, Kuroishi C, Okazaki N, Kuramitsu S, Yokoyama S, Miyano M, Kunishima N;. J Mol Biol. 2005;352:905-917. (from Pfam)
NAD(P)-binding domain-containing protein
The NAD binding domain of 6-phosphogluconate dehydrogenase adopts a Rossmann fold. (from Pfam)
NAD(P)-dependent oxidoreductase
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. [1]. 9126843. Crystal structure of a ternary complex of D-2-hydroxyisocaproate dehydrogenase from Lactobacillus casei, NAD+ and 2-oxoisocaproate at 1.9 A resolution. Dengler U, Niefind K, Kiess M, Schomburg D;. J Mol Biol 1997;267:640-660. (from Pfam)
2-hydroxy-3-oxopropionate reductase
This HMM represents 2-hydroxy-3-oxopropionate reductase (EC 1.1.1.60), also called tartronate semialdehyde reductase. It follows glyoxylate carboligase and precedes glycerate kinase in D-glycerate pathway of glyoxylate degradation. The eventual product, 3-phosphoglycerate, is an intermediate of glycolysis and is readily metabolized. Tartronic semialdehyde, the substrate of this enzyme, may also come from other pathways, such as D-glucarate catabolism.
NAD(P)-dependent oxidoreductase similar to 3-hydroxyisobutyrate dehydrogenase, L-threonate dehydrogenase, 2-(hydroxymethyl)glutarate dehydrogenase, and glyoxylate/succinic semialdehyde reductase
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