2.2.1.9 2-carboxy-1,4-naphthoquinol biosynthesis - - 2.2.1.9 Biosynthesis of secondary metabolites - 01110 2.2.1.9 Metabolic pathways - 01100 2.2.1.9 Ubiquinone and other terpenoid-quinone biosynthesis - 00130 2.2.1.9 vitamin K metabolism vitamin K metabolism -