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The structure of SAICAR synthetase from S. pneumoniae had been solved in complex with ADP, Asp, Mg2+ and AIR. The newly defined binding site for Asp provides information about the mechanism.

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The magnificent rose windows of the Gothic cathedrals provide artistic illustrations of many of the planar point groups of symmetry. It is suggested that the presence of certain symmetry elements and their selection by the artists could have been motivated to convey specific meaning to the resulting compositions.

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