Reaction catalyzed by 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) (1.2.4.4)
acyl-E1b-thiamine diphosphate
+
lipoyl-[lipoic acid-bearing domain]
=
2-oxo-acyl-S-lipoyl-[lipoic acid-bearing domain]
+
E1b-thiamine diphosphate
acyl-E1b-thiamine diphosphate
+
lipoyl-[lipoic acid-bearing domain]
=
2-oxo-acyl-S-lipoyl-[lipoic acid-bearing domain]
+
E1b-thiamine diphosphate