2-oxoisovalerate dehydrogenase (acylating)
In enzymology, a 2-oxoisovalerate dehydrogenase (acylating) (EC 1.2.1.25) is an enzyme that catalyzes the chemical reaction
- 3-methyl-2-oxobutanoate + CoA + NAD+ 2-methylpropanoyl-CoA + CO2 + NADH
| 2-oxoisovalerate dehydrogenase (acylating) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 1.2.1.25 | ||||||||
| CAS no. | 37211-61-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The 3 substrates of this enzyme are 3-methyl-2-oxobutanoate, CoA, and NAD+, whereas its 3 products are 2-methylpropanoyl-CoA, CO2, and NADH.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 3-methyl-2-oxobutanoate:NAD+ 2-oxidoreductase (CoA-methyl-propanoylating). Other names in common use include 2-oxoisovalerate dehydrogenase, and alpha-ketoisovalerate dehydrogenase. This enzyme participates in valine, leucine and isoleucine degradation.
References
- Namba Y, Yoshizawa K, Ejima A, Hayashi T, Kaneda T (1969). "Coenzyme A- and nicotinamide adenine dinucleotide-dependent branched chain alpha-keto acid dehydrogenase. I. Purification and properties of the enzyme from Bacillus subtilis". J. Biol. Chem. 244 (16): 4437–47. PMID 4308861.
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