This group of enzymes act on the CH-NH substrate bond using NAD(+) or NADP(+) as an acceptor. The Pfam family consists mainly of octopine and nopaline dehydrogenases from Ti plasmids.
This is a family of 2-dehydropantoate 2-reductases also known as ketopantoate reductases, EC:1.1.1.169. The reaction catalysed by this enzyme is: (R)-pantoate + NADP(+) <=> 2-dehydropantoate + NADPH. AbpA catalyses the NADPH reduction of ketopanto ...
This is a family of 2-dehydropantoate 2-reductases also known as ketopantoate reductases, EC:1.1.1.169. The reaction catalysed by this enzyme is: (R)-pantoate + NADP(+) <=> 2-dehydropantoate + NADPH. AbpA catalyses the NADPH reduction of ketopantoic acid to pantoic acid in the alternative pyrimidine biosynthetic (APB) pathway [2]. ApbA and PanE are allelic [2]. ApbA, the ketopantoate reductase enzyme is required for the synthesis of thiamine via the APB biosynthetic pathway [1].
N-(1-D-carboxylethyl)-L-norvaline dehydrogenase is part of the (D,L) stereochemistry family of opine dehydrogenases and is able to catalyse the reaction of pyruvate with hydrophobic L amino acids to form opines through reductive condensation using NAD(P)H as a cofactor. Of particular interest is the stereochemical specificity of this enzyme as its reaction is a key step in a number of synthetic routes for pharmaceuticals. The enzyme displays some sequence homology with (L,L) opine dehydrogenases and both families display homology with 2-hydroxy acid dehydrogenases.