Biogeosciences
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Articles | Volume 17, issue 23
Articles | Volume 17, issue 23
https://doi.org/10.5194/bg-17-6145-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-6145-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 23
Research article
 | 
08 Dec 2020
Research article |  | 08 Dec 2020

Uncovering chemical signatures of salinity gradients through compositional analysis of protein sequences

Jeffrey M. Dick, Miao Yu, and Jingqiang Tan

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Short summary
Many natural environments differ in their range of salt concentration (salinity). We developed a metric for the number of water molecules in formation reactions of different proteins and found that it decreases between freshwater and marine systems and also in laboratory experiments with increasing salinity. These results demonstrate a new type of link between geochemical conditions and the chemical composition of microbial communities that can be useful for models of microbial adaptation.
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