Isovaleryl-CoA dehydrogenase

isovaleryl-CoA dehydrogenase
Identifiers
EC number	1.3.99.10
CAS number	37274-61-6
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 / EGO
Search PMC articles PubMed articles NCBI proteins

In enzymology, an isovaleryl-CoA dehydrogenase (EC 1.3.99.10) is an enzyme that catalyzes the chemical reaction

3-methylbutanoyl-CoA + acceptor $\rightleftharpoons$ 3-methylbut-2-enoyl-CoA + reduced acceptor

Thus, the two substrates of this enzyme are 3-methylbutanoyl-CoA and acceptor, whereas its two products are 3-methylbut-2-enoyl-CoA and reduced acceptor.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with other acceptors. The systematic name of this enzyme class is 3-methylbutanoyl-CoA:acceptor oxidoreductase. Other names in common use include isovaleryl-coenzyme A dehydrogenase, isovaleroyl-coenzyme A dehydrogenase, and 3-methylbutanoyl-CoA:(acceptor) oxidoreductase. This enzyme participates in valine, leucine and isoleucine degradation. It employs one cofactor, FAD.

Structural studies

As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1IVH.

References

• BACHHAWAT BK, ROBINSON WG, COON MJ (1956). "Enzymatic carboxylation of beta-hydroxyisovaleryl coenzyme A". J. Biol. Chem. 219 (2): 539–50. PMID 13319276. 
• Ikeda Y, Tanaka K (1983). "Purification and characterization of isovaleryl coenzyme A dehydrogenase from rat liver mitochondria". J. Biol. Chem. 258 (2): 1077–85. PMID 6401713. 
• Tanaka K, Budd MA, Efron ML, Isselbacher KJ (1966). "Isovaleric acidemia: a new genetic defect of leucine metabolism". Proc. Natl. Acad. Sci. U.S.A. 56 (1): 236–42. doi:10.1073/pnas.56.1.236. PMC 285701. PMID 5229850.