3.5.1.102 | 2-amino-5-formylamino-6-(D-ribosylamino)pyrimidin-4(3H)-one 5'-phosphate + H2O |
enzyme catalyzes the second step in archaeal riboflavin and 7,8-didemethyl-8-hydroxy-5-deazariboflavin biosynthesis. The archaeal pathway begins with an archaeal-specific GTP cyclohydrolase IIa (EC 3.5.4.29) that hydrolyzes the imidazole ring of GTP. The bacterial enzyme, EC 3.5.4.25 (GTP cyclohydrolase II) catalyzes both reactions |
Methanocaldococcus jannaschii |
2,5-diamino-6-(D-ribosylamino)pyrimidin-4(3H)-one 5'-phosphate + formate |
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