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A New Method for Gene Deletion to Investigate Cell Wall Biogenesis in Fusobacterium nucleatum

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The Bacterial Cell Wall

Part of the book series: Methods in Molecular Biology ((MIMB,volume 2727))

Abstract

Controlled septal peptidoglycan hydrolysis is vital for bacterial cell division, preserving cellular integrity and facilitating proper daughter cell separation. In Escherichia coli, the FtsEX ABC system governs cell wall hydrolase activation by regulating the EnvC activator. However, the processes underlying cell division in the Gram-negative oral bacterium Fusobacterium nucleatum are poorly understood, mainly due to its well-known genetic intractability. Herein, we provide a step-by-step procedure for a new gene deletion method in F. nucleatum, focusing on the ftsX gene as a target. This novel approach exploits the HicAB toxin-antitoxin system, using HicA as a counter-selective marker to enable efficient and precise gene deletion. By implementing this technique, we successfully demonstrated its applicability in F. nucleatum, providing new insights into this important microorganism’s cell division process. Furthermore, this advanced gene deletion technique offers a valuable resource for future investigation into the functional characterization of genes involved in cell wall biogenesis in F. nucleatum and other genetically intractable microorganisms.

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Acknowledgments

This work was supported by a National Institute of Dental and Craniofacial Research (NIDCR) grant (DE030895) to C.W.

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Correspondence to Chenggang Wu .

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© 2024 The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature

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Bibek, G.C., Zhou, P., Wu, C. (2024). A New Method for Gene Deletion to Investigate Cell Wall Biogenesis in Fusobacterium nucleatum. In: Ton-That, H. (eds) The Bacterial Cell Wall. Methods in Molecular Biology, vol 2727. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3491-2_6

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  • DOI: https://doi.org/10.1007/978-1-0716-3491-2_6

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  • Publisher Name: Humana, New York, NY

  • Print ISBN: 978-1-0716-3490-5

  • Online ISBN: 978-1-0716-3491-2

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