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  • Title: Crystallization and preliminary X-ray diffraction studies of a novel alkaline serine protease (KP-43) from alkaliphilic Bacillus sp. strain KSM-KP43.
    Author: Nonaka T, Fujihashi M, Kita A, Saeki K, Ito S, Miki K.
    Journal: Acta Crystallogr D Biol Crystallogr; 2001 May; 57(Pt 5):717-8. PubMed ID: 11320315.
    Abstract:
    A novel alkaline serine protease (KP-43) which belongs to a new class of the subtilisin superfamily was crystallized by the sitting-drop vapour-diffusion method with ammonium sulfate as a precipitant. The crystals belong to the orthorhombic space group C222(1), with unit-cell parameters a = 43.50 (2), b = 110.4 (1), c = 168.9 (1) A. The crystals diffract X-rays beyond 1.9 A resolution using Cu Kalpha radiation from a rotating-anode generator and are suitable for high-resolution crystal structure analysis.
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