In enzymology, a [3-methyl-2-oxobutanoate dehydrogenase ] is an enzyme that catalyzes the chemical reaction ATP + [3-methyl-2-oxobutanoate dehydrogenase ] ⇌ {\displaystyle \rightleftharpoons } ADP + [3-methyl-2-oxobutanoate dehydrogenase ] phosphateThus, the two substrates of this enzyme are ATP and 3-methyl-2-oxobutanoate dehydrogenase, whereas its 3 products are ADP, 3-methyl-2-oxobutanoate dehydrogenase, and phosphate. Wikipedia