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Identification of an outer membrane protein required for the transport of lipopolysaccharide to the bacterial cell surface
Open accessAbstract
Lipopolysaccharide (LPS), also known as endotoxin due to its severe pathophysiological effects in infected subjects, is an essential component of the outer membrane (OM) of most Gram-negative bacteria. LPS is synthesized in the bacterial inner membrane, a process that is now well understood. In contrast, the mechanism of its transport to the outer leaflet of the OM has remained enigmatic. We demonstrate here that the OM protein, known as increased membrane permeability (Imp) or organic solvent tolerance protein, is involved in this process. An Imp-deficient mutant of Neisseria meningitidis was viable and produced severely reduced amounts of LPS. The limited amount of LPS that was still produced was not accessible to LPS-modifying enzymes expressed in the OM or added to the extracellular medium. We conclude therefore that Imp mediates the transport of LPS to the cell surface. The role of Imp in LPS biogenesis and its high conservation among Gram-negative bacteria make it an excellent target for the development of novel antibacterial compounds.
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Cited by
Wu, T., Malinverni, J., Ruiz, N., Kim, S., Silhavy, T. J., & Kahne, D. (2005) · Cell · doi:10.1016/j.cell.2005.02.015 · Cited by 769
Advances in understanding bacterial outer-membrane biogenesis
Ruiz, N., Kahne, D., & Silhavy, T. J. (2006) · Nature Reviews Microbiology · doi:10.1038/nrmicro1322 · Cited by 458
Wu, T., McCandlish, A. C., Gronenberg, L. S., Chng, S.-S., Silhavy, T. J., & Kahne, D. (2006) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0604744103 · Cited by 366
Robert, V., Volokhina, E. B., Senf, F., Bos, M. P., Gelder, P. V., & Tommassen, J. (2006) · PLoS Biology · doi:10.1371/journal.pbio.0040377 · Cited by 326
Self-citationMalinverni, J. C., Werner, J., Kim, S., Sklar, J. G., Kahne, D., Misra, R., & Silhavy, T. J. (2006) · Molecular Microbiology · doi:10.1111/j.1365-2958.2006.05211.x · Cited by 318
Metadata
- Authors
- Bos, M. P., Tefsen, B., Geurtsen, J., & Tommassen, J.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2004-06-10
- Volume
- 101
- Issue
- 25
- Pages
- 9417-9422
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2113164820
- Cited by
- 255
- References
- 0
- FWCI
- 7.58
- Type
- journal article
- Language
- en
- Open access
- green
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- Bos, M. P., Tefsen, B., Geurtsen, J., & Tommassen, J. (2004). Identification of an outer membrane protein required for the transport of lipopolysaccharide to the bacterial cell surface. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0402340101
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