| Definition : | K14652 3,4-dihydroxy 2-butanone 4-phosphate synthase / GTP cyclohydrolase II [EC:4.1.99.12 3.5.4.25] | (GenBank) ribAB; riboflavin biosynthesis bifunctional protein : GTP cyclohydrolase ii and 3,4-dihydroxy-2-butanone-4-phosphate synthase |