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Inhibition by acetyl-CoA of hepatic carnitine acyltransferase and fatty acid oxidation.


ABSTRACT: At micromolar concentrations, acetyl-CoA inhibited hepatic carnitine acyltransferase activity and mitochondrial fatty acid oxidation. The inhibitory effects were not nearly as potent on a molar basis as those of malonyl-CoA; nevertheless, the cytosolic concentrations of acetyl-CoA, as yet unknown, may be sufficient (greater than 30 microM) to curtail appreciably the mitochondrial transfer of long-chain acyl-CoA units and fatty acid oxidation. Hence acetyl-CoA may also partially regulate hepatic ketogenesis.

PROVIDER: S-EPMC1152530 | BioStudies | 1983-01-01

REPOSITORIES: biostudies

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