Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 71, Issue 2, Pages 329-341Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2018.1428801
Keywords
[Cu(cef)(phen)Cl-2] complex; HSA; molecular modeling; fluorescence quenching; ceftobiprole drug
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Funding
- Razi University Research Center
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A copper(II) complex containing the ceftobiprole drug and 1,10-phenanthroline (phen) has been synthesized and characterized by UV-vis, FT-IR and mass spectra, and elemental analysis. The binding interaction between [Cu(cef)(phen) Cl-2] complex and human serum albumin (HSA) was investigated using absorption, fluorescence emission and circular dichroism spectroscopies, and molecular docking. Thermodynamic parameters (Delta H < 0 and Delta S < 0) indicated that the hydrogen bond and van der Waals interactions played main roles in the binding of complex [Cu(cef)(phen) Cl-2] to HSA. The results of CD and UV-vis spectroscopy showed that the binding of [Cu(cef) (phen) Cl-2] to HSA induces some conformational changes in HSA. Displacement experiments predicted that the binding of [Cu(cef) (phen) Cl-2] complex to HSA is located within domain III, Sudlow's site 2, and these observations were substantiated by molecular docking studies.
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