3-oxoacid CoA-transferase

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3-oxoacid CoA-transferase
EC no.
CAS no.9027-43-4
IntEnzIntEnz view
ExPASyNiceZyme view
MetaCycmetabolic pathway
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a 3-oxoacid CoA-transferase (EC is an enzyme that catalyzes the chemical reaction

succinyl-CoA + a 3-oxo acid succinate + a 3-oxoacyl-CoA

Thus, the two substrates of this enzyme are succinyl-CoA and 3-oxo acid, whereas its two products are succinate and 3-oxoacyl-CoA.

This enzyme belongs to the family of transferases, specifically the CoA-transferases. The systematic name of this enzyme class is succinyl-CoA:3-oxo-acid CoA-transferase. Other names in common use include 3-oxoacid coenzyme A-transferase, 3-ketoacid CoA-transferase, 3-ketoacid coenzyme A transferase, 3-oxo-CoA transferase, 3-oxoacid CoA dehydrogenase, acetoacetate succinyl-CoA transferase, acetoacetyl coenzyme A-succinic thiophorase, succinyl coenzyme A-acetoacetyl coenzyme A-transferase, and succinyl-CoA transferase. This enzyme participates in 3 metabolic pathways: synthesis and degradation of ketone bodies, valine, leucine and isoleucine degradation, and butanoate metabolism.

This protein may use the morpheein model of allosteric regulation.[1]

Structural studies[edit]

As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes 1M3E, 1O9L, 1OOY, 1OOZ, 1OPE, 2NRB, and 2NRC.


  1. ^ T. Selwood & E. K. Jaffe (2011). "Dynamic dissociating homo-oligomers and the control of protein function". Arch. Biochem. Biophys. 519 (2): 131–43. doi:10.1016/j.abb.2011.11.020. PMC 3298769. PMID 22182754.
  • Hersh LB, Jencks WP (1967). "Coenzyme A transferase. Kinetics and exchange reactions". J. Biol. Chem. 242: 3468–3480.
  • Lynen F, Ochoa S (1953). "Enzymes of fatty acid metabolism". Biochim. Biophys. Acta. 12 (1–2): 299–314. doi:10.1016/0006-3002(53)90149-8. PMID 13115439.
  • Menon GK, Stern JR (1960). "Enzymic synthesis and metabolism of malonyl coenzyme A and glutaryl coenzyme A". J. Biol. Chem. 235: 3393–3398. PMID 13769479.
  • Stern JR, Coon MJ, del Campillo A, Schneider MC (1956). "Enzymes of fatty acid metabolism. IV. Preparation and properties of coenzyme A transferase". J. Biol. Chem. 221 (1): 15–31. PMID 13345795.