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Issue 2, 2014
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Multi-spectroscopic and molecular modeling studies on the interaction of antihypertensive drug; methyldopa with calf thymus DNA

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Abstract

The interaction of methyldopa [(S)-2-amino-3-(3,4-dihydroxyphenyl)-2-methyl propanoic acid] (MDP), antihypertensive drug, with calf thymus DNA (ct-DNA) was investigated by spectroscopic and viscometric techniques. According to the results arising from the fluorescence spectra, viscosity measurements and molecular modeling studies; we concluded that MDP is a minor groove binder of ct-DNA and preferentially binds to AT rich regions. Ethidium bromide (EB) displacement studies revealed that MDP did not have any effect on EB bound DNA which is indicative of groove binding. This was substantiated by displacement studies with Hoechst 33258, a known minor groove binder. In addition, the thermodynamic and docking parameters showed that hydrophobic interaction via drug aromatic rings inside the DNA minor groove plays a major role in this binding.

Graphical abstract: Multi-spectroscopic and molecular modeling studies on the interaction of antihypertensive drug; methyldopa with calf thymus DNA

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Publication details

The article was received on 11 Aug 2013, accepted on 31 Oct 2013 and first published on 09 Dec 2013


Article type: Paper
DOI: 10.1039/C3MB70340A
Mol. BioSyst., 2014,10, 338-347

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    Multi-spectroscopic and molecular modeling studies on the interaction of antihypertensive drug; methyldopa with calf thymus DNA

    N. Shahabadi and M. Maghsudi, Mol. BioSyst., 2014, 10, 338
    DOI: 10.1039/C3MB70340A

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