ArticleScientific reports2016
Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed, 19 citations in OpenAlex.
- Effect of water activity on the mechanical glass transition and dynamical transition of bacteria.Biophysical journal · 2022Article
- Article
- Towards Determining Biosignature Retention in Icy World Plumes.Life (Basel, Switzerland) · 2020Article
- Experimental and Simulation Efforts in the Astrobiological Exploration of Exooceans.Space science reviews · 2020Review
- In Vivo Water Dynamics in Shewanella oneidensis Bacteria at High Pressure.Scientific reports · 2019Article
- Pressure effects on collective density fluctuations in water and protein solutions.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- High protein flexibility and reduced hydration water dynamics are key pressure adaptive strategies in prokaryotes.Scientific reports · 2016Article
- Pressure as a Limiting Factor for Life.Life (Basel, Switzerland) · 2016Article
Corrections and comments
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Authors and funding
11 authors at 7 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Quasielastic neutron scattering (QENS) is an ideal technique for studying water transport and relaxation dynamics at pico- to nanosecond timescales and at length scales relevant to cellular dimensions. Studies of high pressure dynamic effects in live organisms are needed to understand Earth's deep biosphere and biotechnology applications. Here we applied QENS to study water transport in Shewanella oneidensis at ambient (0.1 MPa) and high (200 MPa) pressure using H/D isotopic contrast experiments for normal and perdeuterated bacteria and buffer solutions to distinguish intracellular and transmembrane processes. The results indicate that intracellular water dynamics are comparable with bulk diffusion rates in aqueous fluids at ambient conditions but a significant reduction occurs in high pressure mobility. We interpret this as due to enhanced interactions with macromolecules in the nanoconfined environment. Overall diffusion rates across the cell envelope also occur at similar rates but unexpected narrowing of the QENS signal appears between momentum transfer values Q = 0.7-1.1 Å(-1) corresponding to real space dimensions of 6-9 Å. The relaxation time increase can be explained by correlated dynamics of molecules passing through Aquaporin water transport complexes located within the inner or outer membrane structures.
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Registered trials
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