Influence of osmolytes and ionic liquids on the Bacteriorhodopsin structure in the absence and presence of oxidative stress: A combined experimental and computational study.
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ID: 89867
2020
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Abstract
Understanding the folding and stability of membrane proteins is of great importance in protein science. Recently, osmolytes and ionic liquids (ILs) are increasingly being used as drug delivery systems in the biopharmaceutical industry. However, the stability of membrane proteins in the presence of osmolytes and ILs is not yet fully understood. Besides, the effect of oxidative stress on membrane proteins with osmolytes or ILs has not been investigated. Therefore, we studied the influence of osmolytes and ILs as co-solvents on the stability of a model membrane protein (i.e., Bacteriorhodopsin in purple membrane of Halobacterium salinarum), using UV-Vis spectroscopy and molecular dynamics (MD) simulations. The MD simulations allowed us to determine the flexibility and solvent accessible surface area (SASA) of Bacteriorhodopsin protein in the presence and/or absence of co-solvents, as well as to carry out principal component analysis (PCA) to identify the most important movements in this protein. In addition, by means of UV-Vis spectroscopy we studied the effect of oxidative stress generated by cold atmospheric plasma on the stability of Bacteriorhodopsin in the presence and/or absence of co-solvents. This study is important for a better understanding of the stability of proteins in the presence of oxidative stress.
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attri2020influenceinternational
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| Authors | Attri, Pankaj;Razzokov, Jamoliddin;Yusupov, Maksudbek;Koga, Kazunori;Shiratani, Masaharu;Bogaerts, Annemie; |
| Journal | International journal of biological macromolecules |
| Year | 2020 |
| DOI |
S0141-8130(19)40568-0
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