Cell surface filaments of the gliding bacterium Flavobacterium johnsoniae revealed by cryo-electron tomography |
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| Authors: | Liu Jun McBride Mark J Subramaniam Sriram |
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| Affiliation: | Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA. |
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| Abstract: | Flavobacterium johnsoniae cells glide rapidly over surfaces by an as-yet-unknown mechanism. Using cryo-electron tomography, we show that wild-type cells display tufts of approximately 5-nm-wide cell surface filaments that appear to be anchored to the inner surface of the outer membrane. These filaments are absent in cells of a nonmotile gldF mutant but are restored upon expression of plasmid-encoded GldF, a component of a putative ATP-binding cassette transporter. |
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