GTP cyclohydrolase I activity
Catalysis of the reaction: GTP + H2O = 7,8-dihydroneopterin 3'-triphosphate + formate + H+.
GO:0003933
GTP cyclohydrolase activity
is_a
GTP 7,8-8,9-dihydrolase activity
related
GTP 8-formylhydrolase activity
related
dihydroneopterin triphosphate synthase activity
related
guanosine triphosphate 8-deformylase activity
related
guanosine triphosphate cyclohydrolase activity
related
SPAC17A5.13