This family contains the NADP binding domain of saccharopine dehydrogenase. In some organisms this enzyme is found as a bifunctional polypeptide with lysine ketoglutarate reductase. The saccharopine dehydrogenase can also function as a saccharopine reductase.

1: Crystal structure of saccharopine reductase from Magnaporthe grisea, an enzyme of the alpha-aminoadipate pathway of lysine biosynthesis. Johansson E, Steffens JJ, Lindqvist Y, Schneider G; Structure Fold Des 2000;8:1037-1047. PMID:11080625

2: Lysine metabolism in higher plants. Azevedo RA, Lea PJ; Amino Acids 2001;20:261-279. PMID:11354603