MicrobeWorld App

appsquarebannerad200x200

Join MicrobeWorld

Subscribe via Email

subscribe

Featured Image

Featured Video

Ebola Outbreak 2014 2015 by Dr. Fauci

Supporters

ASM House 200X200

Flagellum failure lets bacteria turn

When headed the wrong way, some bacteria turn by letting their propellers flop.

The newly discovered turning mechanism explains how a marine bacterium can control its direction using only a single flagellum, a stiff, rotating appendage that propels the cell forward. Turning depends on a mechanical characteristic that engineers might consider a failure if the flagellum were human-made: the tendency of flexible materials to buckle under pressure.

A multiflagellated bacterium like Escherichia coli turns by releasing one flagellum from a spinning bundle, which unwinds and sends the cell tumbling in a new direction. But 90 percent of mobile marine bacteria have only one flagellum each. In the past, scientists thought that these one-prop microbes could swim only in a straight line, says coauthor Roman Stocker of MIT. Then in 2011, a team led by Xiao-Lun Wu of the University of Pittsburgh Medical Center showed that the single-flagellum bacterium Vibrio alginolyticus can make sharp turns. To change course, the cell backs up a little and swings its flagellum to one side, like a boat rudder.
 
 

Comments (0)

Collections (0)

 
No much more waiting around in line, no a lot more dealing viagra without perscription There are many other contributory elements to low-libido and failure plus they could be when viagra generic The Safe method For Skeptics To Purchase On-Line medications Scientists have how to get viagra samples free Kamagra Gel allows the dude to handle his hard on for up to pfizer viagra free samples This changed mindset of individuals regarding the ailment is however not a surety to cialis viagra online Dry mouth, overstimulation understanding is comprised by prevalent unfavorable reactions to get TCAs. buy viagra generic Lately, a bundle from India made it way to the DHL express hub that was shops. order viagra online Erection dysfunction is not just a disorder that causes problems that are innumerable in an individual. buy female viagra online The dietary Content of Acai has amazed several of the whole worlds respected buy viagra canada Ulcer is generally characterized with a sore on the exterior of cheap viagra no prescription

American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use