GTP cyclohydrolase I activity (Q14916163)
Catalysis of the reaction: GTP + H2O = formate + 7,8-dihydroneopterin 3'-triphosphate.
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aliases GO:0003934
 guanosine triphosphate 8-deformylase activity
 GTP 8-formylhydrolase activity
 guanosine triphosphate cyclohydrolase activity
 GTP 7,8-8,9-dihydrolase activity
 dihydroneopterin triphosphate synthase activity
description Catalysis of the reaction: GTP + H2O = formate + 7,8-dihydroneopterin 3'-triphosphate.

External Links
(P665) R00424
(P686) GO:0003934
(P2892) C1149725