In enzymology, a 3-oxoacid CoA-transferase (EC 220.127.116.11) 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.
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.
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