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. 1985 Apr;162(1):42–46. doi: 10.1128/jb.162.1.42-46.1985

Involvement of autolysin in cellular lysis of Bacillus subtilis induced by short- and medium-chain fatty acids.

T Tsuchido, T Hiraoka, M Takano, I Shibasaki
PMCID: PMC218949  PMID: 2858469

Abstract

The addition of saturated C6, C8, C10, and C12 fatty acids appeared to lyse actively growing cells of Bacillus subtilis 168, as judged by a decrease in the optical density of the culture. Of these fatty acids, dodecanoic acid was the most effective, with 50% lysis occurring in about 30 min at a concentration of 0.5 mM. These conditions also decreased the amount of peptidoglycan estimated by the incorporated radioactivity of N-acetyl-D-[1-14C]glucosamine. At concentrations above 1 mM, however, bacterial lysis was not extensive. Dodecanoic acid did not affect autolysis of the cell wall. The lytic action of dodecanoic acid was greatly diminished in cells in which protein synthesis was inhibited and in an autolytic enzyme-deficient mutant. The results suggest that fatty acid-induced lysis of B. subtilis 168 is due to the induction of autolysis by an autolytic enzyme rather than massive solubilization of the cell membrane by the detergent-like action of the fatty acids.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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