| Literature DB >> 17289998 |
Tâm Mignot1, Joshua W Shaevitz, Patricia L Hartzell, David R Zusman.
Abstract
The bacterium Myxococcus xanthus has two motility systems: S motility, which is powered by type IV pilus retraction, and A motility, which is powered by unknown mechanism(s). We found that A motility involved transient adhesion complexes that remained at fixed positions relative to the substratum as cells moved forward. Complexes assembled at leading cell poles and dispersed at the rear of the cells. When cells reversed direction, the A-motility clusters relocalized to the new leading poles together with S-motility proteins. The Frz chemosensory system coordinated the two motility systems. The dynamics of protein cluster localization suggest that intracellular motors and force transmission by dynamic focal adhesions can power bacterial motility.Entities:
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Year: 2007 PMID: 17289998 PMCID: PMC4095873 DOI: 10.1126/science.1137223
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728