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H181A Cholera tcpA mutant
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H181A Cholera tcpA mutant

March 6, 2013
Transmission electron microsope image of Vibrio choleraethat has been negatively stained. Vibrio choleraeis the bacteria responsible for the gastroinestinal disease cholera. In order to get the disease cholera, the bacteria must be able to colonize in the small intestine and a critical factor necessary for this colonization is the toxin-co-regulated pilus(TCP). H181A is a tcpA mutant strain. The pili are visible as 7 nm fibres. This strain had pili whose morphology was similar to the wild type. For more information, see the journal article: T.J. Kirn, M.J. Lafferty, C.M.P Sandoe and R.K. Taylor, 2000, "Delineation of pilin domains required for bacterial association into microcolonies and intestinal colonization", Molecular Microbiology, Vol. 35(4):896-910 JEOL TEM 100CX Credit: Tom Kirn, Ron Taylor, Louisa Howard