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image of Insights into the Binding of Metadoxine with Bovine Serum Albumin: A Multi-Spectroscopic Investigation Combined with Molecular Docking

Abstract

Background

Metadoxine, also known as pyruvate dehydrogenase activator, is a small molecule drug that has been used in the treatment of various medical conditions. Bovine serum albumin is a commonly studied protein that serves as a plasmatic for understanding protein-drug interactions due to its abundance.

Objective

This research suggests that metadoxine can bind to bovine serum albumin with moderate affinity, leading to an alteration in the secondary structure of the protein, which may also influence the protein's stability and function, which could provide a comprehensive understanding of the interaction at a molecular level. In this study, a variety of methodologies wereused to determine various thermodynamic parameters.

Methods

The study uses UV-visible, Fluorescence, Fourier-transform infrared, Circular dichroism spectroscopy, and Molecular docking to analyze the interaction between bovine serum albumin and metadoxine, providing thermodynamic parameters for understanding the protein structure and its binding.

Result

The binding of metadoxine with bovine serum albumin, causes a hyperchromic shift. In fluorescence spectroscopy, the value of the Stern Volmer increases constantly with an increase in temperature, suggesting a stronger interaction between the Metadoxine and the Bovine serum albumin, leading to dynamic quenching. Additionally, Fourier-transform infrared and circular dichroism indicated a reduction in the secondary structure of Bovine serum albumin.

Conclusion

The interactions between metadoxine and bovine serum albumin, cause hyperchromic shift revealed by UV-visible spectroscopy, whereas in Fluorescence spectroscopy, the value of the Stern Volmer constant increases with an increase in temperature, suggesting a stronger interaction between the MD and the BSA, leading to dynamic quenching. Additionally, Fourier-transform infrared and circular dichroism spectroscopy indicated a reduction in the secondary structure of the protein, as evidenced by the shifting of the amide II band and leading to a slight decrease in the α-helix content. The molecular docking shows that metadoxine was docked in the subdomain IIA binding pocket of BSA.

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2024-10-28
2025-01-22

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Insights into the Binding of Metadoxine with Bovine Serum Albumin: A Multi-Spectroscopic Investigation Combined with Molecular Docking
Bentham Science Publishers ; https://doi.org/10.2174/0113892037318575240919054053
/content/journals/cpps/10.2174/0113892037318575240919054053
/content/journals/cpps/10.2174/0113892037318575240919054053
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  • Article Type:     Research Article
Keywords: bovine serum albumin (BSA) ; protein interaction ; Metadoxine (MD) ; circular dichroism (CD) spectroscopy ; fluorescence spectroscopy ; fourier-transform infrared (FT-IR) spectroscopy

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