Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D042942
http://purl.bioontology.org/ontology/MESH/D042942
Preferred Name

3-Methyl-2-Oxobutanoate Dehydrogenase (Lipoamide)

Definitions
A ketone oxidoreductase that catalyzes the overall conversion of alpha-keto acids to ACYL-CoA and CO2. The enzyme requires THIAMINE DIPHOSPHATE as a cofactor. Defects in genes that code for subunits of the enzyme are a cause of MAPLE SYRUP URINE DISEASE. The enzyme was formerly classified as EC 1.2.4.3.
Synonyms
Alpha-Keto Acid Dehydrogenase
Acid Dehydrogenase, Alpha-Keto
Oxo-Acid Dehydrogenase, Branched-Chain
Branched-Chain 2-Oxo Acid Dehydrogenase
Dehydrogenase, Branched-Chain Oxo-Acid
Decarboxylase, BCKA
Branched-Chain Keto Acid Dehydrogenase
2-oxoisocaproate dehydrogenase
2-Oxoisocaproate Dehydrogenase
Branched Chain Oxo Acid Dehydrogenase
Branched Chain Ketoacid Dehydrogenase
Dehydrogenase, Alpha-Keto Acid
Branched-Chain Oxo-Acid Dehydrogenase
Branched Chain Keto Acid Dehydrogenase
Branched Chain Alpha-Keto Acid Decarboxylase
2-Oxoisovalerate Dehydrogenase (Lipoamide)
2 Oxoisocaproate Dehydrogenase
Dehydrogenase, 2-Oxoisocaproate
Branched Chain Alpha Keto Acid Decarboxylase
Branched Chain 2 Oxo Acid Dehydrogenase
BCKA Decarboxylase
Alpha Keto Acid Dehydrogenase
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Type http://www.w3.org/2002/07/owl#Class
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