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Interaction between carisoprodol and bovine serum albumin and effect of β-cyclodextrin on binding: insights from molecular docking and spectroscopic techniques†
Mallavva B. Bolattin,Sharanappa T. Nandibewoor,Shrinivas D. Joshi,Sheshagiri R. Dixit,Shivamurti A. Chimatadar
RSC Advances Pub Date : 06/28/2016 00:00:00 , DOI:10.1039/C6RA08063D
Abstract

Biomolecular interactions of carisoprodol (CAP) with bovine serum albumin (BSA) have been studied by fluorescence and UV-visible spectroscopy and confirmed by multispectroscopic methods including molecular docking studies. The intrinsic intensity of BSA was quenched by a dynamic quenching mechanism. The binding constant and number of binding sites were calculated according to the Stern–Volmer equation. The effect of β-cyclodextrin on the binding has been studied. Thermodynamic parameters were calculated which reveal the involvement of hydrophobic interactions in the binding. Based on Förster's theory of non-radiation energy transfer, the average binding distance (r) between BSA and CAP was evaluated. Spectral results showed that the binding of CAP to BSA induced conformational changes in BSA. A molecular docking study confirmed the drug binding sites and interaction of CAP with amino acid residues.

Graphical abstract: Interaction between carisoprodol and bovine serum albumin and effect of β-cyclodextrin on binding: insights from molecular docking and spectroscopic techniques
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