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Research Article Open access CC BY 3.0

Antibacterial, Molecular Docking, DNA Binding and Photocleavage Studies on Novel Heterocyclic Pyrazoles

N. Sharath, Halehatty S. Bhojya Naik, B. Vinay Kumar, Joy Hoskeri

Journal of Pharmaceutical Research International · pp. 46–65 · Published 2 May 2011

10.9734/BJPR/2011/287

Abstract

The antibacterial activity, in-silico DNA molecular docking, DNA binding and photocleavage studies of newly synthesized pyrazole is described. Antibacterial potential of these compounds screened against a wide range of Gram-positive and Gram-negative bacteria showed significant zone of inhibition and MIC with standard drug ciproflaxin is investigated. Among all the orientation of binding, fourth orientation showed significant binding and revealed that the binding and docking energy of 4a was -8.62 and -8.66 and inhibition constant 7.46 X e-6. The absorption spectra showed the dynamic interaction with CT DNA and as proficient DNA intercalator (Kb = 4.5×104 M-1). The viscosity measurements and thermal denaturation affords the positive results towards DNA intercalation in both the studies.. The light induced DNA damage was pragmatic in the absence of various ‘‘inhibitors’’ shows in photo cleavage activities at 360 nm.

CT-DNA intercalator in-silico molecular docking photocleavage pyrazole

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