The Osmoprotectant Switch of Potassium to Compatible Solutes in an Extremely Halophilic Archaea Halorubrum kocurii 2020YC7.

ABSTRACT: The main osmoadaptive mechanisms of extremely halophilic archaea include the "salt-in" strategy and the "compatible solutes" strategy. Here we report the osmoadaptive mechanism of an extremely halophilic archaea H. kocurii 2020YC7, isolated from a high salt environment sample. Genomic data revealed that strain 2020YC7 harbors genes trkA, trkH, kch for K⁺ uptake, kefB for K⁺ output, treS for trehalose production from polysaccharide, and betaine/carnitine/choline transporter family gene for glycine betaine uptake. Strain 2020YC7 could accumulate 8.17 to 28.67 μmol/mg protein K⁺ in a defined medium, with its content increasing along with the increasing salinity from 100 to 200 g/L. When exogenous glycine betaine was ad

SUBMITTER: Ding R 

PROVIDER: S-EPMC9222508 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature