Some extreme halophiles maintain high internal concentrations of potassium to avoid osmotic shock.What does halophilic bacterial DNA possess that prevents damage from potassium?

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Halophilic bacterial DNA possesses a high GC content, which helps to stabilize the DNA strands and prevent damage caused by high concentrations of potassium. This is because GC base pairs have three hydrogen bonds, while AT base pairs have only two, making GC bonds stronger and more stable under extreme conditions.

Some Extreme Halophiles Maintain High Internal Concentrations of Potassium to Avoid