THE CHEMICAL COMPOSITION OF THE CELL AND CELL WALL OF SOME HALOPHILIC BACTERIA

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Abstract
Cells of the halophilic bacteria Micrococcus halodenitrificans, Vibrio costicolus, and Pseudomonas salinaria have a relatively high nitrogen content, indicating that the cell material is predominantly protein. They contain only small amounts of fat and no detectable amount of carbohydrate other than nucleic acid pentose. Cell walls are lipoprotein. Cells disrupted by shaking with water alone contained electron-dense material similar in composition to the cell walls. In a few preparations of the Micrococcus a polymer of β-hydroxybutyric acid was found.
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