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DOI | 10.1038/s41467-018-06252-8 |
Picosecond orientational dynamics of water in living cells | |
Tros, Martijn1; Zheng, Linli2; Hunger, Johannes3; Bonn, Mischa3; Bonn, Daniel4; Smits, Gertien J.2; Woutersen, Sander1 | |
2017-10-12 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Germany |
英文摘要 | Cells are extremely crowded, and a central question in biology is how this affects the intracellular water. Here, we use ultrafast vibrational spectroscopy and dielectric-relaxation spectroscopy to observe the random orientational motion of water molecules inside living cells of three prototypical organisms: Escherichia coli, Saccharomyces cerevisiae (yeast), and spores of Bacillus subtilis. In all three organisms, most of the intracellular water exhibits the same random orientational motion as neat water (characteristic time constants similar to 9 and similar to 2 ps for the first-order and second-order orientational correlation functions), whereas a smaller fraction exhibits slower orientational dynamics. The fraction of slow intracellular water varies between organisms, ranging from similar to 20% in E. coli to similar to 45% in B. subtilis spores. Comparison with the water dynamics observed in solutions mimicking the chemical composition of (parts of) the cytosol shows that the slow water is bound mostly to proteins, and to a lesser extent to other biomolecules and ions. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412860100004 |
WOS关键词 | 2-DIMENSIONAL INFRARED-SPECTROSCOPY ; BACILLUS-SUBTILIS SPORES ; HYDROGEN-BOND NETWORK ; BACTERIAL-SPORES ; TERAHERTZ SPECTROSCOPY ; DIELECTRIC-RELAXATION ; HYDRATION DYNAMICS ; CORE WATER ; PROTEIN ; CYTOPLASM |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204016 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Amsterdam, Van t Hoff Inst Mol Sci, Sci Pk 904, NL-1098XH Amsterdam, Netherlands; 2.Univ Amsterdam, Swammerdam Inst Life Sci, Sci Pk 904, NL-1098XH Amsterdam, Netherlands; 3.Max Planck Inst Polymer Res, Dept Mol Spect, Ackermannweg 10, D-55128 Mainz, Germany; 4.Univ Amsterdam, Inst Phys, Sci Pk 904, NL-1098XH Amsterdam, Netherlands |
推荐引用方式 GB/T 7714 | Tros, Martijn,Zheng, Linli,Hunger, Johannes,et al. Picosecond orientational dynamics of water in living cells[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Tros, Martijn.,Zheng, Linli.,Hunger, Johannes.,Bonn, Mischa.,Bonn, Daniel.,...&Woutersen, Sander.(2017).Picosecond orientational dynamics of water in living cells.NATURE COMMUNICATIONS,8. |
MLA | Tros, Martijn,et al."Picosecond orientational dynamics of water in living cells".NATURE COMMUNICATIONS 8(2017). |
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