Out-of-shape DNA minor groove binders: induced fit interactions of heterocyclic dications with the DNA minor groove.

Miao, Y., Lee, M.P., Parkinson, G.N., Batista-Parra, A., Ismail, M.A., Neidle, S., Boykin, D.W. and Wilson, W.D. (2005) Out-of-shape DNA minor groove binders: induced fit interactions of heterocyclic dications with the DNA minor groove. Biochemistry, 44 (45). pp. 14701-14708. 10.1016/j.bpc.2006.06.006.

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DOI: 10.1016/j.bpc.2006.06.006

Abstract

Combining structure-specific recognition of nucleic acids with limited sequence reading is a promising method to reduce the size of the recognition unit required to achieve the necessary selectivity and binding affinity to control function. It has been demonstrated recently that G-quadruplex DNA structures can be targeted by organic cations in a structure-specific manner. Structural targets of quadruplexes include the planar end surfaces of the G-tetrad stacked columns and four grooves. These provide different geometries and functional groups relative to duplex DNA. We have used surface plasmon resonance and isothermal titration calorimetry to show that binding affinity and selectivity of a series of quadruplex end-stacking molecules to human telomeric DNA are sensitive to compound shape as well as substituent type and position. ITC results indicate that binding is largely enthalpy driven. Circular dichroism was also used to identify a group of structurally related compounds that selectively target quadruplex grooves.

Item Type:Article
Additional Information:Full text available electronically from the School of Pharmacy Library.
Departments, units and centres:Department of Pharmaceutical and Biological Chemistry > Cancer Research UK Biomolecular Structure Group
ID Code:1764
Journal or Publication Title:Biochemistry
Deposited By:Library Staff
Deposited On:17 Aug 2010 10:18
Last Modified:04 Feb 2011 16:26

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