# OC Root 2nd 3rd 4th PC Gene/Definition OC.337397 Bacteria.286869 Actinobacteria.75847 Nocardia.8478 nsr.16 nsr:NS506_00018 ribA; GTP cyclohydrolase II; K01497 GTP cyclohydrolase II [EC:3.5.4.25] OC.337397 Bacteria.286869 Actinobacteria.75847 Nocardia.8478 nsr.16 nsr:NS506_07863 GTP cyclohydrolase II; K01497 GTP cyclohydrolase II [EC:3.5.4.25] OC.337397 Bacteria.286869 Actinobacteria.75847 Nocardia.8478 ntp.6745 ntp:CRH09_36490 GTP cyclohydrolase; K01497 GTP cyclohydrolase II [EC:3.5.4.25]