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GTP cyclohydrolase II
GTP cyclohydrolase II catalyses the first committed step in the biosynthesis of riboflavin. [1]. 8320220. Biosynthesis of riboflavin: cloning, sequencing, mapping, and expression of the gene coding for GTP cyclohydrolase II in Escherichia coli. Richter G, Ritz H, Katzenmeier G, Volk R, Kohnle A, Lottspeich F, Allendorf D, Bacher A;. J Bacteriol 1993;175:4045-4051. (from Pfam)
GTP cyclohydrolase II catalyzes the conversion of GTP to 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate (DARP), formate and pyrophosphate
GTP cyclohydrolase II RibA
Catalyzes the conversion of GTP to formate and 2,5-diamino-6-hydroxy-4-(5-phosphoribosylamino)pyrimidine and diphosphate
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