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- W2013455135 abstract "The binding interactions of 22 flavonoids (9 aglycones and 13 glycosides) with DNA triplexes were investigated using electrospray ionization mass spectrometry (ESI-MS). The results revealed that the hydroxyl positions of aglycones, the locations and numbers of saccharide, as well as the aglycone skeletons play roles in the triplex-binding properties of flavonoids. The presence of 3-OH, or 3′-OH, or replacement of 4′-OH with methoxy group in aglycones decreased the fraction of bound DNA sharply. Flavonoid glycosides exhibit higher binding affinities towards the DNA triplexes than their aglycone counterparts. Glycosylations of flavones at the 8-C position and isoflavones at the 7-O position show higher binding affinities than those on the other positions of ring A of aglycones. Glycosylation with a disaccharide on C3 position of flavonol results in higher binding affinity than that with monosaccharide. Flexibility of the ring B is favorable for its interaction with DNA triplex. According to sustained off-resonance irradiation collision-induced dissociation (SORI-CID) experiments, glycosylation and non-planarity of flavonoid aglycones lead to different dissociation pathways of the flavonoid/triplex complexes. The differences between dissociation patterns suggest different DNA-binding modes or DNA-binding affinities. Although the exact binding geometry of the flavonoid–triplex complexes cannot be specified, the results may be helpful for understanding the triplex-binding properties of flavonoids and give a clue to design of triplex-binding ligands." @default.
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- W2013455135 date "2009-06-01" @default.
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- W2013455135 title "A study of the non-covalent interaction between flavonoids and DNA triplexes by electrospray ionization mass spectrometry" @default.
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- W2013455135 doi "https://doi.org/10.1016/j.ijms.2009.01.007" @default.
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