L carnitine helps transport fatty acids to produce energy Figure 1. [The carnitine shuttle]. GeneReviews NCBI Bookshelf Carnitine Metabolism and Its Role in Fatty Acid Oxidation Creative Proteomics Carnitine Shuttle an overview ScienceDirect Topics Fatty acid transportation mechanism in cell, starting with the activation of fatty acid by carnitine palmitoyl transferase 1 to acyl coA, which now attaches itself with the translocase to be transported across