GTP-cyklohydrolas I eller pyrofosfatbildande GTP 7,8-8,9-dihydrolas (GTP-cyklohydrolas II). En enzymgrupp som hydrolyserar imidazolringen i GTP, varvid kol-8 frigörs som format. Två C-N-bindningar hydrolyseras, och pentasenheten isomeriseras. Detta är första steget i syntesen av folsyra från GTP. EC 3.5.4.16 (GTP-cyklohydrolas I) och EC 3.5.4.25 (GTP-cyklohydrolas II).
(GTP cyclohydrolase I) or GTP 7,8-8,9-dihydrolase (pyrophosphate-forming) (GTP cyclohydrolase II). An enzyme group that hydrolyzes the imidazole ring of GTP, releasing carbon-8 as formate. Two C-N bonds are hydrolyzed and the pentase unit is isomerized. This is the first step in the synthesis of folic acid from GTP. EC 3.5.4.16 (GTP cyclohydrolase I) and EC 3.5.4.25 (GTP cyclohydrolase II).
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Cyclohydrolase, GTP — GTP 8-Formylhydrolase — 8-Formylhydrolase, GTP — GTP 8 Formylhydrolase — GTP Ring-Opening Enzyme — GTP Ring Opening Enzyme — Ring-Opening Enzyme, GTP — GTP Dihydrolase — Dihydrolase, GTP — 7,8-Dihydroneopterintriphosphate Synthetase — 7,8 Dihydroneopterintriphosphate Synthetase — Synthetase, 7,8-Dihydroneopterintriphosphate — GTP Cyclohydrolase II — Cyclohydrolase II, GTP — GTP Cyclohydrolase I — Cyclohydrolase I, GTP