A flavoprotein containing oxidoreductase that catalyzes the reduction of lipoamide by NADH to yield dihydrolipoamide and NAD+. The enzyme is a component of several MULTIENZYME COMPLEXES.

Synonyms: Lipoyl Dehydrogenase, Dihydrolipoamide: NAD+ oxidoreductase, Dehydrogenase, Lipoic Acid, L-Protein, Glycine Decarboxylase Complex, Dihydrolipoamide Dehydrogenase, Diaphorase, NAD, Dehydrogenase, Dihydrolipoyl, NADH Diaphorase, NAD Diaphorase, Diaphorase (Lipoamide Dehydrogenase), Diaphorase, NADH, Dehydrogenase, Lipoamide, Valine Lipoamide Dehydrogenase, Dehydrogenase, Dihydrolipoamide, Dihydrolipoyl Dehydrogenase, Lipoamide Dehydrogenase, EC 1.8.1.4, Lipoamide Dehydrogenase, Valine, Glycine Decarboxylase Complex L Protein, Glycine Decarboxylase Complex L-Protein, Dehydrogenase, Valine Lipoamide, Dehydrogenase, Lipoyl, Lipoic Acid Dehydrogenase