1.21.98.1 physiological function a gene disruption mutant grows efficiently in presence of synthetic cyclic dehypoxanthine futalosine -, 728819 1.21.98.1 physiological function a gene disruption mutant requires menaquinone for growth -, 690059 1.21.98.1 physiological function the enzyme is part of the futalosine pathway for menaquinone biosynthesis -, 724385