2.3.1.239 Biosynthesis of 12-, 14- and 16-membered macrolides - 00522 - 2.3.1.239 Biosynthesis of secondary metabolites - 01110 - 2.3.1.239 macrolide antibiotic biosynthesis macrolide antibiotic biosynthesis - - 2.3.1.239 Metabolic pathways - 01100 - 2.3.1.239 methymycin, neomethymycin and novamethymycin biosynthesis - - PWY-7422