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Lumazine binding domain
This domain binds to derivatives of lumazine in some proteins. Some proteins have lost the residues involved in binding lumazine. (from Pfam)
riboflavin synthase subunit alpha
riboflavin synthase
riboflavin synthase catalyzes the dismutation of two molecules of 6,7-dimethyl-8-ribityllumazine, resulting in the formation of riboflavin and 5-amino-6-(D-ribitylamino)uracil, the last step of riboflavin biosynthesis
This protein family consists almost entirely of two lumazine-binding domains, described in the HMM Lum_binding from PFAM. The model generates lower scores against other proteins that also have two lumazine-binding domains, including some involved in bioluminescence. The name ribE was selected, from among alternatives including ribB and ribC, to match the usage in EcoCyc.
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