Movies of swimming motility

Escherichia coli

Rhodobacter sphaeroides


Movies of swarming motility

Escherichia coli swarm

Salmonella typhmurium swarm

Serratia marcescens swarm

Movies of gliding motility


Mycoplasma mobile

Flavobacterium johnsoniae

Movies of Twitching motility

Pseudomonas aeruginosa

Other movies

Tethered bacteria

Escherichia coli patterns

Carpets and microchannels

Miscellaneous movies

Marvels of Bacterial Behavior - History & Physics of Bacterial Motion

Rowland Institute         Harvard University

Swimming Rhodobacter sphaeroides

This organism has one flagellar filament that emerges from the side of the cell body. When the filament spins (usually clockwise), it is helical and the cell runs. When the filament stops, it coils up and the cell stops. The coiling tends to reorient the cell body.


Runs and stops 1

Runs and stops 2

Runs and stops 3


Armitage, J.P. and Schmitt, R. Bacterial chemotaxis: Rhodobacter spheroides and Sinorhizobium meliloti -- variations on a theme? Microbiology 143, 3671-3682 (1997).