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flavin biosynthesis

State Icon Reaction EC-Number Confidence maximal confidence score from EnzymeDetector
5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione + L-3,4-dihydroxybutan-2-one_4-phosphate <=> H+ + 6,7-dimethyl-8-(1'-D-ribityl)lumazine + phosphate + H2O 2.5.1.78 6,7-dimethyl-8-ribityllumazine synthase
2.5.1.9 riboflavin synthase


D-ribulose_5-phosphate <=> H+ + formate + L-3,4-dihydroxybutan-2-one_4-phosphate 4.1.99.12 3,4-dihydroxy-2-butanone-4-phosphate synthase

GTP + H2O <=> H+ + 2-amino-5-formylamino-6-hydroxy-4-(5-phosphoribosylamino)-pyrimidine + phosphate 3.5.4.29 GTP cyclohydrolase IIa

5-amino-2,6-dioxy-4-(5'-phosphoribitylamino)pyrimidine + NADP+ <=> 5-amino-6-(5-phospho-D-ribosylamino)uracil + NADPH + H+ 1.1.1.193 5-amino-6-(5-phosphoribosylamino)uracil reductase

5-amino-2,6-dioxy-4-(5'-phosphoribitylamino)pyrimidine + H2O <=> 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione + phosphate 3.1.3.104 5-amino-6-(5-phospho-D-ribitylamino)uracil phosphatase

riboflavin + ATP <=> FMN + ADP + H+ 2.7.1.161 CTP-dependent riboflavin kinase
2.7.1.26 riboflavin kinase


reduced_riboflavin + NADP+ <=> H+ + riboflavin + NADPH 1.5.1.30 flavin reductase (NADPH)
1.5.1.38 FMN reductase (NADPH)
1.5.1.41 riboflavin reductase [NAD(P)H]



2,5-diamino-6-(1-D-ribitylamino)-4(3H)-pyrimidinone_5'-phosphate + NAD+ <=> 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone_5'-phosphate + NADH + H+ 1.1.1.302 2,5-diamino-6-(ribosylamino)-4(3H)-pyrimidinone 5'-phosphate reductase

H+ + H2O + 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone_5'-phosphate <=> 5-amino-6-(5-phospho-D-ribosylamino)uracil + NH3 3.5.4.26 diaminohydroxyphosphoribosylaminopyrimidine deaminase

FMN + ATP + H+ <=> FAD + diphosphate 2.7.7.2 FAD synthase

riboflavin + CTP <=> H+ + FMN + CDP 2.7.1.161 CTP-dependent riboflavin kinase

FADH2 + NADP+ <=> FAD + NADPH + H+ 1.14.13.7 phenol 2-monooxygenase (NADPH)
1.18.1.2 ferredoxin---NADP+ reductase
1.5.1.30 flavin reductase (NADPH)
1.5.1.36 flavin reductase (NADH)
1.5.1.38 FMN reductase (NADPH)
1.5.1.41 riboflavin reductase [NAD(P)H]
1.5.1.45 FAD reductase [NAD(P)H]







2-amino-5-formylamino-6-hydroxy-4-(5-phosphoribosylamino)-pyrimidine + H2O <=> H+ + 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone_5'-phosphate + formate 3.5.1.102 2-amino-5-formylamino-6-ribosylaminopyrimidin-4(3H)-one 5'-monophosphate deformylase

H2O + GTP <=> H+ + diphosphate + 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone_5'-phosphate + formate 3.5.4.25 GTP cyclohydrolase II

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