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Interaction Between 2′,4-Dihydroxychalcone and the N, F, E Conformers of Bovine Serum Albumin: Influence of Temperature and Ionic Strength

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Abstract

UV–Vis spectroscopy was used to study the interaction between the 2′,4- dihydroxychalcone, flavonoid which is known to have anti-tumor activity in vitro, and others biological properties, and the N, F and E conformers of bovine serum albumin at different ionic strengths and temperatures. The Klotz model was found to be adequate to determine the constants and number of binding sites. The reaction was found to be exothermic and spontaneous. The number of binding sites decreases and the reaction is more exergonic along with the increase in ionic strength and the conformational change of N to E. The reactions were necessarily hydrophobic and followed by a process of ionic character.

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Abbreviations

2′,4-DHC:

2′,4-Dihydroxychalcone

BSA:

Bovine serum albumin

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Authors and Affiliations

  1. Area of Chemistry and Physics, Faculty of Chemistry, Biochemistry and Pharmacy, Universidad Nacional de San Luis, San Luis, Argentina

    Rolando A. Curvale, Nora B. Debattista & Nora B. Pappano

Authors
  1. Rolando A. Curvale
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  2. Nora B. Debattista
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  3. Nora B. Pappano
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Correspondence to Rolando A. Curvale.

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Curvale, R.A., Debattista, N.B. & Pappano, N.B. Interaction Between 2′,4-Dihydroxychalcone and the N, F, E Conformers of Bovine Serum Albumin: Influence of Temperature and Ionic Strength. Protein J 31, 293–299 (2012). https://doi.org/10.1007/s10930-012-9404-y

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