4.1.1.99 Biosynthesis of secondary metabolites - 01110 4.1.1.99 Metabolic pathways - 01100 4.1.1.99 mevalonate metabolism mevalonate metabolism - 4.1.1.99 mevalonate pathway II (haloarchaea) - - 4.1.1.99 Terpenoid backbone biosynthesis - 00900