SEARCH Articles Figures Tables Bacterial Biosynthesis of Menaquinones Biosynthesis of menaquinone Menaquinone Menaquinone Menaquinone Vitamin Menaquinone biosynthesis Menaquinone dietary sources Menaquinone menadione Menaquinone protonation Menaquinone reduction Menaquinone structure Menaquinone synthesis Menaquinones Menaquinones Menaquinones (vitamin Menaquinones and their semiquinone radical anions Menaquinones biosynthesis Naphthoquinones menaquinone