Abstract
When stressed, bacteria can enter various nondividing states. In the present study, nondividing filamentous form in Helicobacter pylori was induced by a β-lactam antibiotic, aztreonam. In order to find possible cell division checkpoints in H. pylori, 2-DE was used to compare the proteomic profile of nondividing filamentous H. pylori with its spiral form. In total, 21 proteins involved in various cellular processes showed differential expression. One protein induced by aztreonam was a cell division inhibitor (minD), related to cell division. We then constructed the deletion mutant of minD in H. pylori 26695. Scanning electron microscope observation showed that the deletion of this protein provoked some bacteria to change into a short rod-shape and the viability of the mutant is lower than that of the wild type. Moreover, sequence comparison showed that minD of H. pylori and that of Escherichia coli share 50 % amino acid identity. This suggested that this protein possibly plays the similar part in H. pylori as in E. coli.
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This work was supported by the National Natural Science Foundation of China (No: 30770118, 30972775, 30800037, 30800406, 81071313, 81001098, 81000868, and 30971151) and the Science Foundation of Shandong Province, PR China (No: ZR2009CZ001 and ZR2009CM002). We gratefully acknowledge the invaluable help of Jissica Link for critically reading this manuscript.
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Chunhong Shao and Yabin Zhou contributed equally to this work.
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Shao, C., Zhou, Y., Sun, Y. et al. Analysis of Aztreonam-Inducing Proteome Changes in Nondividing Filamentous Helicobacter pylori . Curr Microbiol 65, 108–115 (2012). https://doi.org/10.1007/s00284-012-0132-5
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DOI: https://doi.org/10.1007/s00284-012-0132-5