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Keywords:

  • biosynthesis;
  • enoyl-CoA hydratase;
  • isotopic labeling;
  • polyketides;
  • salicylic acid

Graphical Abstract

Thumbnail image of graphical abstract

Despite the simple structure and widespread occurrence of benzoic acid, its biosynthesis has resisted complete elucidation. However, recent studies reveal that the conversion of cinnamoyl-CoA into benzoyl-CoA (see scheme; R=Ph) can proceed by a route that resembles fatty acid β-oxidation. Feeding studies and sequence analyses show that both pathways not only proceed with the same stereochemistry, but are also mechanistically related.