<p>This work investigates the complexation process of transition metal ions (Zn<sup>2+</sup>, Mn<sup>2+</sup>, Ni<sup>2+</sup>) with lovastatin using high-resolution NMR spectroscopy and molecular dynamics (MD). Analysis of the <sup>1</sup>H NMR spectra showed that the addition of Mn<sup>2+</sup> and Ni<sup>2+</sup> ions to a solution of lovastatin in deuterated acetone (C<sub>3</sub>D<sub>6</sub>O) leads to changes in the line shape and chemical shifts of the CH-15 and CH<sub>2</sub>-16 signals. In contrast, similar <sup>1</sup>H NMR experiments with the lovastatin-Zn<sup>2+</sup> system showed no such changes. The DOSY NMR spectra revealed changes in the self-diffusion coefficients (D) of lovastatin in the presence of Mn<sup>2+</sup> and Ni<sup>2+</sup> ions compared to lovastatin in pure deuterated acetone(C<sub>3</sub>D<sub>6</sub>O). Based on the experimental results a suggestion was proposed regarding possible binding locale for Mn<sup>2+</sup> and Ni<sup>2+</sup> ions on the lovastatin molecule. This assumption is confirmed by the results of molecular dynamics (MD) simulations of the corresponding systems.</p>

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Complexation Process of Lovastatin with Metal Ions (Zinc, Manganese, Nickel) by NMR Spectroscopy and MD

  • O. V. Aganova,
  • A. V. Rakova,
  • A. R. Yulmetov,
  • A. A. Troshkina,
  • V. V. Klochkov

摘要

This work investigates the complexation process of transition metal ions (Zn2+, Mn2+, Ni2+) with lovastatin using high-resolution NMR spectroscopy and molecular dynamics (MD). Analysis of the 1H NMR spectra showed that the addition of Mn2+ and Ni2+ ions to a solution of lovastatin in deuterated acetone (C3D6O) leads to changes in the line shape and chemical shifts of the CH-15 and CH2-16 signals. In contrast, similar 1H NMR experiments with the lovastatin-Zn2+ system showed no such changes. The DOSY NMR spectra revealed changes in the self-diffusion coefficients (D) of lovastatin in the presence of Mn2+ and Ni2+ ions compared to lovastatin in pure deuterated acetone(C3D6O). Based on the experimental results a suggestion was proposed regarding possible binding locale for Mn2+ and Ni2+ ions on the lovastatin molecule. This assumption is confirmed by the results of molecular dynamics (MD) simulations of the corresponding systems.