Báo cáo khoa học: Structural basis of charge transfer complex formation by riboflavin bound to 6,7-dimethyl-8-ribityllumazine synthase
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The amino acid residue tryptophan 27 of 6,7-dimethyl-8-ribityllumazine synthase of the yeastSchizosaccharomycespombewas replacedby tyrosine. The structures of theW27Ymutant protein in complex with riboflavin, the substrateanalogue 5-nitroso-6-ribitylamino-2,4(1H,3H)-pyrimidin-edione, and the product analogue 6-carboxyethyl-7-oxo-8-ribityllumazine,weredeterminedbyX-raycrystallographyat resolutions of 2.7–2.8 A˚. Whereas the indole system ofW27 forms a coplanarp-complex with riboflavin, the cor-respondingphenyl ring in theW27Ymutant establishes onlyperipheral contact with the heterocyclic ring system of thebound riboflavin....
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Báo cáo khoa học: Structural basis of charge transfer complex formation by riboflavin bound to 6,7-dimethyl-8-ribityllumazine synthase
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Báo cáo khoa học: Structural basis of charge transfer complex formation by riboflavin bound to 6,7-dimethyl-8-ribityllumazine synthase
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