2-Oxoisovalerate Dehydrogenase (Acylating). 2-Oxoisovalerate Dehydrogenase . alpha-Ketoisovalerate Dehydrogenase . 2 Oxoisovalerate Dehydrogenase . Dehydrogenase, 2-Oxoisovalerate . Dehydrogenase, alpha-Ketoisovalerate . alpha Ketoisovalerate Dehydrogenase . An NAD+ dependent enzyme that catalyzes the oxidation 3-methyl-2-oxobutanoate to 2-methylpropanoyl-CoA. It plays a role in the degradation of VALINE; LEUCINE; and ISOLEUCINE. . 1.00