3.1.2.28 2-carboxy-1,4-naphthoquinol biosynthesis - 3.1.2.28 Biosynthesis of secondary metabolites - 3.1.2.28 Metabolic pathways - 3.1.2.28 Ubiquinone and other terpenoid-quinone biosynthesis - 3.1.2.28 vitamin K metabolism vitamin K metabolism