# OC Root 2nd 3rd 4th PC Gene/Definition OC.166385 Archaea.37121 Thaumarchaeota.293 Nitrososphaera.1541 nga.322 nga:Ngar_c01400 folE; GTP cyclohydrolase I; K01495 GTP cyclohydrolase IA [EC:3.5.4.16] OC.166385 Archaea.37121 Thaumarchaeota.293 Nitrososphaera.1541 nvn.1338 nvn:NVIE_013640 GTP cyclohydrolase I; K01495 GTP cyclohydrolase IA [EC:3.5.4.16] OC.166385 Archaea.37121 Thaumarchaeota.293 Nitrososphaera.1541 nev.2631 nev:NTE_02764 GTP cyclohydrolase I; K01495 GTP cyclohydrolase IA [EC:3.5.4.16]