Short- and long-range crowding effects on water’s hydrogen bond networks
Short- and long-range crowding effects on water’s hydrogen bond networks
复制标题
对水氢键网络的短期和长期拥挤效应
DOI:
10.1016/j.xcrp.2021.100419
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发表时间:
2021
影响因子:
8.9
通讯作者:
Baiz, Carlos R.
中科院分区:
文献类型:
--
作者:
You, Xiao;Shirley, Joseph C.;Lee, Euihyun;Baiz, Carlos R.
Intracellular water is highly confined with approximately 40% of the cell volume occupied by biomolecules. Crowding alters water dynamics and interactions with biomolecules. In biochemical experiments, artificial crowders are commonly used to mimic intracellular environments, but their effects on biomolecules remain elusive. Here, we investigate the crowding effects by directly accessing the picosecond hydrogen-bond dynamics in crowded solutions using ultrafast two-dimensional infrared spectroscopy and all-atom molecular dynamics simulations. We quantify the effects of different crowding agents: small sugars; polysaccharides; and polyethylene glycol (PEG). Our results show that crowders introduce disorder within the first two solvation shells but stabilize ice-like order in water >1 nm from the crowder. The results show that accounting for crowder chemical structure, conformation, and crowder-solvent interactions is a key step toward a complete description of crowded solutions forin vitrofor biomolecular studies.
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影响因子:
3.3
作者:
Lee, Hochan;Choi, Jun-Ho;Cho, Minhaeng
通讯作者:
Cho, Minhaeng
影响因子:
62.1
作者:
Bellissent-Funel MC;Hassanali A;Havenith M;Henchman R;Pohl P;Sterpone F;van der Spoel D;Xu Y;Garcia AE
通讯作者:
Garcia AE
影响因子:
6.3
作者:
BERENDSEN, HJC;VANDERSPOEL, D;VANDRUNEN, R
通讯作者:
VANDRUNEN, R
影响因子:
5.6
作者:
Mukherjee, Smita;Waegele, Matthias M.;Chowshury, Pramit;Guo, Lin;Gai, Feng
通讯作者:
Gai, Feng
DOI:
10.1021/acs.jpcb.9b03183
发表时间:
2019
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Achintya Kundu;P. Verma;M. Cho
通讯作者:
M. Cho