Activation and Transportation of Fatty Acids to the Mitochondria via the Carnitine Shuttle with Animation Animations PharmaXChange.info L Carnitine functions as a cofactor for long chain fatty acids across Download Scientific Diagram The Carnitine Shuttle Cytosol Mitochondrial Fatty Acid Transport L Carnitine helps shuttle fatty acids into the mitochondria (the power plants of your cells) where they can be burned for energy. It's often used in fat metabolism and energy support formulas.