Preliminary X-ray data for a d-amino acid amino-transferase from a novel thermophilic Bacillus

Abstract

Crystals of the d-amino acid aminotransferase (D-ATA) from a novel thermophilic Bacillus species (Escherichia coli pICT113 cloned gene product) have been examined by X-ray analysis. The crystals grow as hexagonal prisms, with the symmetry of space group P61 or P65 (indistinguishable crystallographically). The cell dimensions are a = b = 135 A ̊, c = 53 A ̊, α = β = 90 °, and γ = 120 °. The unit cell has a volume of 850,000 Å3 with six asymmetric units per unit cell. There is one dimer of molecular weight 62,000 per asymmetric unit, and the crystals diffract to 2.7 Å. © 1987.