1.2.4.2 FAD - 740480 1.2.4.2 NAD+ - 654699, 656572, 656595, 656596, 656835, 696124, 697874, 698620, 699606, 699660 1.2.4.2 thiamine diphosphate - 656595, 656596, 656835, 696124, 697874, 699606, 699660, 740480, 740535, 740732, 747943, 759216, 762591, 763053, 763067, 763403, 763425 1.2.4.2 thiamine diphosphate dependent 688353 1.2.4.2 thiamine diphosphate dependent on 719719, 763403 1.2.4.2 thiamine diphosphate prosthetic group 656572 1.2.4.2 thiamine diphosphate required , 2-oxoglutarate dehydrogenase complex 349000, 349011 1.2.4.2 thiamine diphosphate thiamine deficiency reduces the activity of the alpha-ketoglutarate dehydrogenase complex 689172