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Are there helical protein in bacteria? A classic example is thought to be the cell-shape related protein MreBi. But, as in a recent paper (http://www.sciencedirect.com/science/article/pii/S0006291X11004463) this may be the result of a dynamic situation, whereby such proteins travel in a helical path, possibly along the membrane. An example of such behavior are the division-related proteins MiCD. See http://schaechter.asmblog.org/schaechter/2008/06/complex-simplic.html. There are others - a good topic for a future posting perhaps.


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