Malonyl CoA-acyl carrier protein transacylase, mitochondrial is an enzyme that in humans is encoded by the MCATgene.
The protein encoded by this gene is found exclusively in the mitochondrion, where it catalyzes the transfer of a malonyl group from malonyl-CoA to the mitochondrial acyl carrier protein. The encoded protein may be part of a fatty acid synthase complex that is more like the type II prokaryotic and plastid complexes rather than the type I human cytosolic complex. Two transcript variants encoding different isoforms have been found for this gene.
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Kuhl JE, Ruderman NB, Musi N, et al. (2006). "Exercise training decreases the concentration of malonyl-CoA and increases the expression and activity of malonyl-CoA decarboxylase in human muscle". Am. J. Physiol. Endocrinol. Metab.290 (6): E1296–303. doi:10.1152/ajpendo.00341.2005. PMID16434556.