2ms6 | pdb_00002ms6

Human Telomeric G-quadruplex DNA sequence (TTAGGGT)4 complexed with Flavonoid Quercetin

spinqualitylabelsall models 2ms6, 1 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2ms6 is a 4 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: QUE Related: 2ms5 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Publication Abstract from PubMed Flavonoids are a group of naturally available compounds that are an attractive source for drug discovery. Their potential to act as anti-tumourigenic and anti-proliferative agents has been reported previously but is not yet fully understood. Targeting human telomeric G-quadruplex DNA could be one of the mechanisms by which these flavonoids exert anticancer activity. We have performed detailed biophysical studies for the interaction of four representative flavonoids, Luteolin, Quercetin, Rutin and Genistein, with the human telomeric G-quadruplex sequence tetramolecular d-(T2AG3T) (Tel7). In addition, we used NMR spectroscopy to derive the first model for the complex formed between Quercetin and G-quadruplex sequence. The model showed that Quercetin stabilises the G-quadruplex structure and does not open the G-tetrad. It interacts with the telomeric sequence through pi-stacking at two sites: between T1pT2 and between G6pT7. Based on our findings, we suggest that Quercetin could be a potent candidate for targeting the telomere and thus, act as a potent anti-cancer agent. Structural Insight into the interaction of Flavonoids with Human Telomeric Sequence.,Tawani A, Kumar A Sci Rep. 2015 Dec 2;5:17574. doi: 10.1038/srep17574. PMID:26627543 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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