Reaction catalyzed by 6,7-dimethyl-8-ribityllumazine synthase (2.5.1.78)
+
=
+
2
H2O
+
5-amino-6-(1-D-ribitylamino)pyrimidine-2,4(1H,3H)-dione
+
(3R)-3,4-dihydroxy-2-butanone 4-phosphate
=
6,7-dimethyl-8-(1-D-ribityl)lumazine
+
2 H2O
+
phosphate
