... Four enzymes participate in thesynthesis of riboflavin from GTP and ribulose 5-phos-phate: pyrimidine deaminase/pyrimidine reductase,riboflavin synthase, GTP cyclohydrolase II/3,4-dihydr-oxy-2-butanone ... Francesco, R.D. (1991) Structure, synthesis, and physical properties of covalently bound flavins and 6- and 8-hydroxyflavins. In Chemistry and Biochemistry of Flavoenzymes(M€uuller, F., ed.), Vol. ... Chemistry, Faculty of Engineering, Osaka City University, JapanPhotobacterium phosphoreum IFO 13896 emits light stronglywhen cultured in medium containing 3% NaCl, but onlyweakly in medium containing...