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Regulated Pole-to-Pole Oscillations of a Bacterial Gliding Motility Protein
Tâm Mignot,
John P. Merlie, Jr.,
David R. Zusman*
Abstract:
Little is known about directed motility of bacteria that moveby type IV pilusmediated (twitching) motility. Here,we found that during periodic cell reversals of Myxoccocus xanthus,type IV pili were disassembled at one pole and reassembled atthe other pole. Accompanying these reversals, FrzS, a proteinrequired for directed motility, moved in an oscillatory patternbetween the cell poles. The frequency of the oscillations wascontrolled by the Frz chemosensory system, which is essentialfor directed motility. Pole-to-pole migration of FrzS appearedto involve movement along a filament running the length of thecell. FrzS dynamics may thus regulate cell polarity during directedmotility.
University of California, Department of Molecular and Cell Biology, Berkeley, CA 947203204, USA.
* To whom correspondence should be addressed. E-mail: zusman{at}uclink.berkeley.edu
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