EOG8MSGCH GO:0016624 22/89 oxidoreductase activity, acting on the aldehyde or oxo group of donors, disulfide as acceptor molecular_function "Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces a disulfide." [GOC:jl] EOG8MSGCH GO:0003863 4/89 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity molecular_function "Catalysis of the reaction: 3-methyl-2-oxobutanoate + lipoamide = S-(2-methylpropanoyl)dihydrolipoamide + CO2." [EC:1.2.4.4]