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The gas vesicle is a hollow structure made of protein. It usually has the form of a cylindrical tube closed by conical end caps. Gas vesicles occur in five phyla of the Bacteria and two groups of the(More)
Two groups of microbiologists have independently isolated 'Walsby's square bacterium' from salt crystallizer ponds; its growth depends on pyruvate. Genetic analysis shows that the squares, discovered(More)
I have come across a bacterium which has the form of a thin square sheet. In most bacteria such a shape would be precluded by the osmotically-generated internal hydrostatic pressure but this(More)