Many species of swimming bacteria have a rotary structure called a “flagellum,” consisting of more than twenty different kinds of proteins. By rotating their flagellar filaments and gaining propulsion, bacteria can swim freely in water. Flagella-mediated motility is essential for bacteria to move in search for better habitats and two forms have been known to date: (i) “run and tumbling” seen in peritrichous bacteria such as Escherichia coli; and (ii) “forward run-reverse-flick” seen in Vibrio alginoliticus. Such forms of flagella-mediated motility are adopted when moving in water, but they are also adopted by pathogenic bacteria to reach our internal organs. Thus, they are widely recognized as virulence factors.
from Top Health News – ScienceDaily http://bit.ly/2GRzGCI
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