Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (4): 20220745.doi: 10.7503/cjcu20220745
• Physical Chemistry • Previous Articles Next Articles
SU Lili, SHAO Xueguang(), CAI Wensheng(
)
Received:
2022-12-04
Online:
2023-04-10
Published:
2023-02-07
Contact:
SHAO Xueguang
E-mail:xshao@nankai.edu.cn;wscai@nankai.edu.cn
Supported by:
CLC Number:
TrendMD:
SU Lili, SHAO Xueguang, CAI Wensheng. Mechanism of Tau R2/Wt Morphology Affected by Osmolytes Using Molecular Dynamics Simulations[J]. Chem. J. Chinese Universities, 2023, 44(4): 20220745.
Molecular assembly | Atom | Concentration of osmolyte/(mol·L-1) | Box volume/nm3 | Simulation time/μs |
---|---|---|---|---|
R2/wt⁃water | 17661 | — | 5.6×5.6×5.6 | 5.0 |
R2/wt⁃water⁃urea | 19057 | 5.0 | 5.6×5.6×5.6 | 5.0 |
R2/wt⁃water⁃TMAO | 19133 | 2.0 | 5.6×5.6×5.6 | 5.0 |
Table 1 Details of the molecular assemblies investigated in this study
Molecular assembly | Atom | Concentration of osmolyte/(mol·L-1) | Box volume/nm3 | Simulation time/μs |
---|---|---|---|---|
R2/wt⁃water | 17661 | — | 5.6×5.6×5.6 | 5.0 |
R2/wt⁃water⁃urea | 19057 | 5.0 | 5.6×5.6×5.6 | 5.0 |
R2/wt⁃water⁃TMAO | 19133 | 2.0 | 5.6×5.6×5.6 | 5.0 |
System | Formation probability(%) | ||
---|---|---|---|
K274⁃D283 | K280⁃D283 | K281⁃D283 | |
R2/wt⁃water | 57.93 | 3.28 | 4.67 |
R2/wt⁃water⁃urea | 16.64 | 10.04 | 12.75 |
R2/wt⁃water⁃TMAO | 5.21 | 4.21 | 14.04 |
Table 2 Formation probability of salt bridges(rN-C<0.5 nm)
System | Formation probability(%) | ||
---|---|---|---|
K274⁃D283 | K280⁃D283 | K281⁃D283 | |
R2/wt⁃water | 57.93 | 3.28 | 4.67 |
R2/wt⁃water⁃urea | 16.64 | 10.04 | 12.75 |
R2/wt⁃water⁃TMAO | 5.21 | 4.21 | 14.04 |
System | Number of hydrogen bonds | ||
---|---|---|---|
Water⁃all | Water⁃osmolyte | R2/wt⁃osmolyte | |
R2/wt⁃water | 3981 | — | — |
R2/wt⁃water⁃urea | 5657 | 2887 | 14 |
R2/wt⁃water⁃TMAO | 4687 | 841 | 2 |
Table 3 Average number of hydrogen bonds in different systems
System | Number of hydrogen bonds | ||
---|---|---|---|
Water⁃all | Water⁃osmolyte | R2/wt⁃osmolyte | |
R2/wt⁃water | 3981 | — | — |
R2/wt⁃water⁃urea | 5657 | 2887 | 14 |
R2/wt⁃water⁃TMAO | 4687 | 841 | 2 |
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