Carnitine Molecule of the Month September 2003 L Carnitine is Underrated. New Meta Review Reminds Us Why. Frontiers Fatty acid oxidation in immune function L Carnitine functions as a cofactor for long chain fatty acids across Download Scientific Diagram Short Note On Carnitine Shuttle: Fatty acids are oxidized in mitochondria, and synthesized in the cytoplasm. Long chain fatty acids must form an active intermediate, fatty acyl CoA, before being oxidized inside mitochondria. Catherine