Investigation of binding properties of two ethidium derivatives with serum albumins: spectral and computational approach


AKBAY N. , Tok T. T. , Seferoglu Z., GÖKOĞLU E.

JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS, cilt.36, ss.3114-3121, 2018

  • Cilt numarası: 36 Konu: 12
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1080/07391102.2017.1380536
  • Dergi Adı: JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
  • Sayfa Sayısı: ss.3114-3121

Özet

The interaction mechanisms of two ethidium derivatives, 3,8-dibenzoylamino-5-ethyl-6-phenylphenantridinium chloride (E2) and 3,8-diphenylacetylamino-5-ethyl-6-phenylphenantridinium chloride (E3) with serum albumins (BSA and HSA) have been investigated by a combined experimental and computational approach. Fluorescence quenching and UV-vis results revealed that the interaction of derivatives with albumins resulted in formation of ground-state complexes and the obtained Stern-Volmer quenching constants designate the presence of a static component in the quenching mechanisms. Thermodynamic parameters (H and S values) point out the ionic interactions play the major role in E2-BSA, E2-HSA and E3-HSA complexes. The van der Waals interactions are dominant forces in E3-BSA complex. Moreover, the obtained results in this study were supported with computational analyzes which have same tendency.