The Rowland Institute for Science.

Projects

-Fluorescent flagella

-Swimming without flagella

-Gliding motility

-Twitching motility

-Swarming motility

-Fluorescent chemotaxis proteins

-Chemotactic signaling studied by FRET

-Models of the chemotactic system

-Motor force generation

-Switching under load

Twitching motility

Jeff Skerker was able to visualize the extension and retraction of type IV pili, using evanescent-wave fluorescence microscopy. These 6 nm dia. organelles are responsible for twitching motility in some species of bacteria and for social gliding motility in others. See Movies, Twitching Pseudomonas.

References

Skerker, J.M. and Berg, H.C. Direct observation of extension and retraction of type IV pili. Proc Natl. Acad. Sci. USA 98, 6901-6904 (2001).

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Copyright © 2003 The Rowland Institute for Science.
Last modified Tuesday, July 23, 2008.