# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.166401 Eukaryotes.310402 Animals.132773 Arthropods.118330 Mites_and_ticks.18648 tut.1515 tut:107359174 GTP cyclohydrolase 1; K01495 GTP cyclohydrolase IA [EC:3.5.4.16]