3-methyl-2-oxobutanoate dehydrogenase


In enzymology, a 3-methyl-2-oxobutanoate dehydrogenase is an enzyme that catalyzes the chemical reaction
The 3 substrates of this enzyme are 3-methyl-2-oxobutanoate, dihydrolipoyllysine-residue transferase, and lipoyllysine, whereas its 3 products are dihydrolipoyllysine-residue transferase, S-dihydrolipoyllysine, and CO2.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with a disulfide as acceptor.
This enzyme participates in valine, leucine and isoleucine degradation. It employs one cofactor, thiamin diphosphate.

Structural studies

As of late 2007, twenty-nine structures have been solved for this class of enzymes, with PDB accession codes,,,,,,,,,,,,,,,,,,,,,,,,,,,, and.