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riboflavin synthase : ウィキペディア英語版 | riboflavin synthase
Riboflavin synthase is an enzyme that catalyzes the final reaction of riboflavin biosynthesis: (2) 6,7-dimethyl-8-ribityllumazine → riboflavin + 5-amino-6-ribitylamino-2,4(1''H'',3''H'')-pyrimidinedione ==Structure== The Riboflavin synthase monomer is 23kDa. Each monomer contains two beta-barrels and one α-helix at the C-terminus (residues 186-206.) The monomer folds into pseudo two-fold symmetry, predicted by sequence similarity between the N-terminus barrels (residues 4-86) and the C-terminus barrel (residues 101-184).〔 The enzyme from different species adopts different quaternary structures, from monomeric to 60 subunits〔http://www.ebi.ac.uk/pdbe-srv/PDBeXplore/enzyme/?ec=2.5.1.9&tab=assemblies〕
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