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Fluorescence spectroscopic studies on the interaction between a new bismuth(III) Schiff base complex and bovine serum albumin

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Abstract

In this work, the binding interaction between a new bismuth(III) Schiff base complex |[Bi(valen)]Cl·2H2O}[H2 valen=N,N'-bis(2-hydroxy-3-methoxyphenylmethylidene)-2,6-pyridinediamine, C21H19N3O4] and bovine serum albumin(BSA) was studied via fluorescence quenching method. The static quenching constant K LB and some thermodynamic parameters(e.g., ΔG θ, ΔH θ and ΔS θ) of the interaction were estimated. In particular, the binding site between the complex and BSA was explored by molecular docking. On the basis of the mechanism of Förster energy transfer, the binding distance between the bismuth(III) Schiff base complex and BSA(Trp.213) as well as the transfer efficiency was obtained. Furthermore, the effect of the bismuth(III) Schiff base complex on the con-formation of BSA was investigated using synchronous fluorescence spectroscopy.

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Authors and Affiliations

  1. Hunan Provincial Key Laboratory of Xiangnan Rare-precious Metals Compounds and Applications, College of Chemistry Biology and Environmental Engineering, Xiangnan University, Chenzhou, 423043, P. R. China

    Xu Li, Chuanhua Li, Jianhong Jiang, Deliang Wei, Lijuan Ye, Jilin Hu, Shengxiong Xiao, Hui Zhang, Xia Li & Qiangguo Li

  2. College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, P. R. China

    Huiwen Gu

Authors
  1. Xu Li
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  2. Chuanhua Li
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  3. Jianhong Jiang
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  4. Huiwen Gu
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  5. Deliang Wei
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  6. Lijuan Ye
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  7. Jilin Hu
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  9. Hui Zhang
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  10. Xia Li
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  11. Qiangguo Li
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Corresponding authors

Correspondence to Huiwen Gu or Qiangguo Li.

Additional information

Supported by the National Natural Science Foundation of China(Nos.21273190, 20973145), the Science and Technology Plan Projects of Hunan Province, China(No.2014TT2026) and the Educational Committee Foundation of Hunan Province, China (Nos.15C1272, 15A175, 14A134).

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Li, X., Li, C., Jiang, J. et al. Fluorescence spectroscopic studies on the interaction between a new bismuth(III) Schiff base complex and bovine serum albumin. Chem. Res. Chin. Univ. 33, 166–171 (2017). https://doi.org/10.1007/s40242-017-6361-1

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  • DOI: https://doi.org/10.1007/s40242-017-6361-1

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