4.1.3.4 Biosynthesis of secondary metabolites - 01110 - 4.1.3.4 Butanoate metabolism - 00650 - 4.1.3.4 Geraniol degradation - 00281 - 4.1.3.4 ketogenesis - - PWY66-367 4.1.3.4 L-leucine degradation I - - LEU-DEG2-PWY 4.1.3.4 leucine metabolism leucine metabolism - - 4.1.3.4 Metabolic pathways - 01100 - 4.1.3.4 mevalonate degradation - - PWY-5074 4.1.3.4 Valine, leucine and isoleucine degradation - 00280 -