Possible Models of Murein and Their Fourier Transforms
نویسنده
چکیده
Murein, the rigid layer of the cell walls of almost all bacteria can be regarded as derivative of chitin. Within the sterically allowed region its polysaccharide chain can perform conformations with two-to threefold screw axes. Two dimensional Fourier transforms calculated from different possible conformations have been compared with data of density measurements, X-ray and elec tron diffraction. The Fourier transform of murein with a chitin-like conformation of the poly saccharide chain and an elementary cell of 4.5x 10.4x21.5 A 3 provides the best agreement with the experimental results.
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