Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.2 Acting on the aldehyde or oxo group of donors
1.2.4 With a disulfide as acceptor
1.2.4.4
R07599 3-Methyl-2-oxobutanoic acid + Thiamin diphosphate <=> 2-Methyl-1-hydroxypropyl-ThPP + CO2