Calorimetric and spectroscopic studies on the interaction of methimazole with bovine serum albumin.
The potential binding interaction(s) of the anti-thyroid drug methimazole (MMZ) with the protein bovine serum albumin (BSA) has been studied using isothermal titration calorimetry (ITC) and UV-Visible, fluorescence and circular dichroism (CD) spectroscopic techniques. The binding of MMZ to BSA has been studied in both the presence and absence of added surfactants. Since, the ITC thermograms show the molar enthalpy of binding of MMZ and BSA to be zero within experimental error, either the enthalpy change of the binding interaction is zero or there is no binding occurring. The CD and the intrinsic fluorescence and life time spectra of BSA were unchanged by the addition of MMZ. This is also indicative of the absence of any significant interaction of MMZ with BSA.
Singh
Sreelekha K
SK
Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
Kishore
Nand
N
D013956:Antithyroid Agents / Q000737:chemistry* / Q000378:metabolism; D002151:Calorimetry; D002942:Circular Dichroism; D006863:Hydrogen-Ion Concentration; D008713:Methimazole / Q000737:chemistry* / Q000378:metabolism; D011485:Protein Binding; D011489:Protein Denaturation; D012492:Salts; D012710:Serum Albumin, Bovine / Q000737:chemistry* / Q000378:metabolism; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature
D013956:Antithyroid Agents; D012492:Salts; D013501:Surface-Active Agents; D012710:Serum Albumin, Bovine; D008713:Methimazole