A pinch of salt
Methanonatronarchaeia are a distinct class-level lineage of extremely halophilic methanogens, which lack features of classical methanogenesis and have a high intracellular concentration of potassium, suggesting potassium-based osmoprotection.
Refers to "Discovery of extremely halophilic, methyl-reducing euryarchaea provides insights into the evolutionary origin of methanogenesis" by Sorokin et al.
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