Effect of the Bacteriocin Subtilosin P19 on Bacillus anthracis Spores

IF 1.3 4区 生物学 Q4 MICROBIOLOGY Microbiology Pub Date : 2023-11-28 DOI:10.1134/s0026261723602105
V. D. Pokhilenko, V. N. Gerasimov, S. K. Zhigletsova, T. A. Kalmantaev, I. A. Chukina, R. I. Mironova, A. R. Gajtrafimova
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Abstract

This is the first report on electron microscopic investigation of the effect of bacteriocin on Bacillus anthracis spores. The new bacteriocin, subtilosin P19, isolated from a natural Bacillus subtilis strain, effectively killed dormant B. anthracis spores at concentrations of 0.5‒35 µg/mL after 60-min exposure. Our data, combined with analysis of the known mechanisms of the action of bacteriocins, suggest that the mechanism of spore inactivation was apparently based on multiple disruptions of the integrity of the inner and outer membranes surrounding the cortex of the dormant spore. It is also likely that the molecular configuration of subtilosin P19 allows it to penetrate through the outer integuments and to damage the vital membrane structures of the anthrax spores. Subtilosin P19 can serve as a promising basis for new antimicrobial preparations of natural origin.

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细菌素Subtilosin P19对炭疽芽孢杆菌孢子的影响
摘要:本文首次报道了细菌素对炭疽芽孢杆菌孢子作用的电镜研究。从天然枯草芽孢杆菌菌株中分离得到的新细菌素subtilosin P19,在0.5 ~ 35µg/mL的浓度下,暴露60 min后能有效杀死休眠的炭疽芽孢杆菌孢子。我们的数据,结合对细菌素作用的已知机制的分析,表明孢子失活的机制显然是基于围绕休眠孢子皮层的内外膜完整性的多重破坏。subtilosin P19的分子结构也可能使其能够穿透外被膜并破坏炭疽孢子的重要膜结构。Subtilosin P19可作为天然来源的新型抗菌制剂的基础。
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来源期刊
Microbiology
Microbiology 生物-微生物学
CiteScore
2.40
自引率
13.30%
发文量
60
审稿时长
6-12 weeks
期刊介绍: Microbiology is an is an international peer reviewed journal that covers a wide range of problems in the areas of fundamental and applied microbiology. The journal publishes experimental and theoretical papers, reviews on modern trends in different fields of microbiological science, and short communications with descriptions of unusual observations. The journal welcomes manuscripts from all countries in the English or Russian language.
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