# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.337575 Eukaryotes.347003 Animals.336101 Vertebrates.155971 Mammals.119496 rss.7353 rss:109442936 monofunctional riboflavin biosynthesis protein RIBA 2, chloroplastic; K14652 3,4-dihydroxy 2-butanone 4-phosphate synthase / GTP cyclohydrolase II [EC:4.1.99.12 3.5.4.25]