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  • Title: Purification, crystallization and preliminary X-ray crystallographic study of alpha-amylase from Bacillus stearothermophilus.
    Author: Suvd D, Takase K, Fujimoto Z, Matsumura M, Mizuno H.
    Journal: Acta Crystallogr D Biol Crystallogr; 2000 Feb; 56(Pt 2):200-2. PubMed ID: 10666605.
    Abstract:
    A recombinant alpha-amylase from Bacillus stearothermophilus was found to be produced as several isoforms arising from different N--terminal processing. Some of those isoforms were purified to homogeneity and crystallized at 293 K using the hanging-drop vapour-diffusion method under the following conditions: 35 mM sodium acetate (pH 4.6), 6.25%(v/v) 2-propanol, in the presence of 1.23%(w/v) acarbose (a pseudo-oligosaccharide inhibitor) in the drop. The crystals diffracted beyond 2.0 A resolution using synchrotron radiation at the Photon Factory, Tsukuba. They belong to the monoclinic space group P2(1), with unit-cell parameters a = 53.7 (2), b = 92.9 (4), c = 53.2 (2) A, beta = 109.4 (1) degrees.
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