Abstract
Crystals of the periplasmic ribose receptor for chemotaxis and transport in Escherichia coli have been examined by X-ray analysis. The crystals grow as elongated rectangular prisms with the symmetry of the orthorhombic space group P212121. The unit cell dimensions are a = 74.6 Å, b = 88.8 Å and c = 40.1 Å. There is one molecule of molecular weight 28,500 per asymmetric unit.
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