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2012•Advanced materials researchOpen access

Study of the Interaction between Zinc Complex and Bovine Serum Albumin by Fluorescence Spectroscopy

Yu Fen Liu, Hai Tao Xia, De Fu Rong

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Abstract

The binding reaction of Zn(II) complex [Zn(C8H10N)2Cl2] with bovine serum albumin(BSA) was studied by fluorescence spectroscopy under the simulative physiological conditions. The intrinsic fluorescence of BSA could be quenched by Zn(II) complex. The quenching mechanism was suggested as static quenching according to the Stern–Volmer equation. The binding constants Kband the number of binding sites n were calculated. The Zn(II) complex exhibit good binding propensity to bovine serum albumin having relatively high binding constant values. The thermodynamic parameters indicate that the hydrogen bonds and van der Waals forces play a major role in BSA-Zn(II) complex association. The process of binding was spontaneous, in which Gibbs free energy change (ΔG) was negative.

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What this paper is about

The binding reaction of Zn(II) complex [Zn(C8H10N)2Cl2] with bovine serum albumin(BSA) was studied by fluorescence spectroscopy under the simulative physiological conditions. The intrinsic fluorescence of BSA could be quenched by Zn(II) complex. The quenching mechanism was suggested as static quenching according to the Stern–Volmer equation. The binding constants Kband the number of binding sites n were calculated. The Zn(II) complex exhibit good binding propensity to bovine serum albumin having relatively high binding constant values. The thermodynamic parameters indicate that the hydrogen bonds and van der Waals forces play a major role in BSA-Zn(II) complex association. The process of binding was spontaneous, in which Gibbs free energy change (ΔG) was negative.

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Available abstract

The binding reaction of Zn(II) complex [Zn(C8H10N)2Cl2] with bovine serum albumin(BSA) was studied by fluorescence spectroscopy under the simulative physiological conditions. The intrinsic fluorescence of BSA could be quenched by Zn(II) complex. The quenching mechanism was suggested as static quenching according to the Stern–Volmer equation. The binding constants Kband the number of binding sites n were calculated. The Zn(II) complex exhibit good binding propensity to bovine serum albumin having relatively high binding constant values. The thermodynamic parameters indicate that the hydrogen bonds and van der Waals forces play a major role in BSA-Zn(II) complex association. The process of binding was spontaneous, in which Gibbs free energy change (ΔG) was negative.

Key concepts: Bovine serum albumin, Chemistry, Quenching (fluorescence), van der Waals force, Gibbs free energy, Zinc, Binding constant, Hydrogen bond

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Study of the Interaction between Zinc Complex and Bovine Serum Albumin by Fluorescence Spectroscopy — Research Paper | ScholarLens