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  Cell orientation of swimming bacteria: From theoretical simulation to experimental evaluation

Ping, L. (2012). Cell orientation of swimming bacteria: From theoretical simulation to experimental evaluation. Science China Life Sciences, 55(3), 202-209. doi:10.1007/s11427-012-4298-7.

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BOL530.pdf (Verlagsversion), 622KB
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 Urheber:
Ping, Liyan1, 2, Autor           
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1Department of Bioorganic Chemistry, Prof. Dr. W. Boland, MPI for Chemical Ecology, Max Planck Society, ou_24028              
2Research Group Dr. L. Ping, Entomogenous Microbiology, Department of Bioorganic Chemistry, Prof. Dr. W. Boland, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421909              

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 Zusammenfassung: The motion of small bacteria consists of two phases: relatively long runs alternate with intermittent stops, back-ups, or tumbles, depending on the species. In polar monotrichous bacteria, the flagellum is anchored at the cell pole inherited from the parent generation (old pole) and is surrounded by a chemoreceptor cluster. During forward swimming, the leading pole is always the pole recently formed in cell division (new pole). The flagella of the peritrichous bacterium Escherichia coli often form a bundle behind the old pole. Its cell orientation and receptor positioning during runs generally mimic that of monotrichous bacteria. When encountering a solid surface, peritrichous bacteria exhibit a circular motion with the leading pole dipping downward. Some polar monotrichous bacteria also perform circular motion near solid boundaries, but during back-ups. In this case, the leading pole points upward. Very little is known about behavior near milieu-air interfaces. Biophysical simulations have revealed some of the mechanisms underlying these phenomena, but leave many questions unanswered. Combining biophysics with molecular techniques will certainly advance our understanding of bacterial locomotion.

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 Datum: 20122012
 Publikationsstatus: Erschienen
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 Identifikatoren: Anderer: BOL530
DOI: 10.1007/s11427-012-4298-7
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Titel: Science China Life Sciences
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Science China Press and Springer Verlag
Seiten: - Band / Heft: 55 (3) Artikelnummer: - Start- / Endseite: 202 - 209 Identifikator: ISSN: 1674-7305
CoNE: https://pure.mpg.de/cone/journals/resource/1674-7305