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University of Houston professor co-authors PNAS paper on how bacteria move
Date:7/25/2011

attached pili.

"We think the bacteria use this rapid-snap motion to move forward," she said. "We believe that this method allows the bacteria to move faster and more efficiently across a surface through this sticky, viscous pre-matrix substance that surrounds it. The bacteria may use less energy this way."

Bacteria often move along a surface to form biofilms, which develop on surfaces and are shielded by an extracellular matrix of polymers. The bacteria excrete polymers as they move, which forms the basis for this shield.

This substance can be very thick and difficult to move through. The researchers hypothesize that the "slingshot" motion thins the sticky goo and makes it easier for the bacteria to travel through it. The next step is for Conrad and her collaborators to thoroughly test this hypothesis.


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Contact: Laura Tolley
ljtolley@uh.edu
713-743-0778
University of Houston
Source:Eurekalert

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