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. 1981 Aug;147(2):326–332. doi: 10.1128/jb.147.2.326-332.1981

Cytoplasmic membrane fraction that promotes septation in an Escherichia coli lon mutant.

H I Adler, A Carrasco, W Crow, J S Gill
PMCID: PMC216049  PMID: 7021526

Abstract

A particulate fraction derived from bacterial cells stimulates septation in irradiated Escherichia coli lon mutants when added to postirradiation plating media. It was established that the particles are derived from the cytoplasmic membrane and that they have been partially purified by sucrose density gradient centrifugation. These particles also contain the cytochrome-based respiratory activity of the cell. A variety of experiments established a correlation between the septation-promoting activity of the particles and their ability to remove oxygen from the postirradiation plating medium. It was suggested that the efficient removal of oxygen from the medium allowed the lon cells to repair radiation-induced damage to the septation mechanism.

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Selected References

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