26931 GTP_cyclohydro1Thalassiosira pseudonana
GO:0003934 GO:0009058 -
GTP cyclohydrolase I activity
Catalysis of the reaction: GTP + H2O = formate + 7,8-dihydroneopterin 3'-triphosphate.
The chemical reactions and pathways resulting in the formation of substances; typically the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.