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Crystallization and preliminary X-ray studies of L-aspartase from Escherichia coli.

Single crystals of L-aspartate ammonia-lyase (L-aspartase) from Escherichia coli have been obtained by microdialysis at room temperature using polyethylene glycol 3350 and sodium acetate as co-precipitants. The crystals exhibit the symmetry of space group P2(1)2(1)2 with a = 156.5 A, b = 147.6 A, c = 102.5 A and diffract at least to 2.8 A.