Effects of water on the solvation and structure of lipase in deep eutectic solvents containing a protein destabilizer and stabilizer

Literature Information

Publication Date 2021-09-29
DOI 10.1039/D1CP03282H
Impact Factor 3.676
Authors

Qi Qiao, Jian Shi, Qing Shao


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Abstract

Aqueous deep eutectic solvent (DES) solutions emerge as new media for biocatalysis. The large number of DESs provides a space for designing solutions with desired features. One challenge for this design is to understand the fundamental relationship between the water effect on biocatalysis and the DES compositions. We investigate the solvation and structure of a lipase protein in two DESs containing a protein destabilizer (choline : urea (1 : 2)) and stabilizer (choline : glycerol (1 : 2)) and their 1 : 1 aqueous solution using molecular dynamics simulations. The lipase protein in the pure aqueous solution is simulated as the reference. The lipase protein remains folded in both DESs and their aqueous solutions. In both DESs, water molecules weaken the solvation shell of the lipase protein by reducing the protein-DES hydrogen bond lifetimes. However, the water molecules change the surface area and conformation of the active site on the lipase protein differently in the two DESs. Our simulations indicate that the impact on active sites plays an important role in differentiating the effect of water on biocatalysis in aqueous DESs.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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