Journal
ACS CHEMICAL BIOLOGY
Volume 7, Issue 6, Pages 1109-1119Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cb300096g
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Funding
- EC [261863, Bio-NMR, 261572, WeNMR]
- state of Hessen (BMRZ)
- Italian Ministero dell'Universita e della ricerca
- Ente Cassa di Risparmio di Firenze, Italy
- DFG
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G-quadruplex structures can be formed at the single-stranded overhang of telomeric DNA, and ligands able to stabilize this structure have recently been identified as potential anticancer drugs. Among the potential G-quadruplex binders, we have studied the binding ability of berberine and sanguinarine, two members of the alkaloid family, an important class of natural products long known for medicinal purpose. Our spectroscopic (CD, NMR, and fluorescence) studies and molecular modeling approaches revealed binding modes at ligand-complex stoichiometries >1:1 and ligand self-association induced by DNA for the interactions of the natural alkaloids berberine and sanguinarine with the human telomeric G-quadruplex DNA.
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