Catalyzes the transfer of the acyl group of long-chain fatty acid-CoA conjugates onto carnitine, an essential step for the mitochondrial uptake of long-chain fatty acids and their subsequent beta-oxidation in the mitochondrion ( , ). Plays an important role in hepatic triglyceride metabolism (By similarity).
Subcellular locations: Mitochondrion outer membrane
Strong expression in kidney and heart, and lower in liver and skeletal muscle.