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  • Title: Purification, crystallization and preliminary X-ray analysis of a thermostable glycoside hydrolase family 43 beta-xylosidase from Geobacillus thermoleovorans IT-08.
    Author: Rohman A, van Oosterwijk N, Kralj S, Dijkhuizen L, Dijkstra BW, Puspaningsih NN.
    Journal: Acta Crystallogr Sect F Struct Biol Cryst Commun; 2007 Nov 01; 63(Pt 11):932-5. PubMed ID: 18007043.
    Abstract:
    The main enzymes involved in xylan-backbone hydrolysis are endo-1,4-beta-xylanase and beta-xylosidase. beta-Xylosidase converts the xylo-oligosaccharides produced by endo-1,4-beta-xylanase into xylose monomers. The beta-xylosidase from the thermophilic Geobacillus thermoleovorans IT-08, a member of glycoside hydrolase family 43, was crystallized at room temperature using the hanging-drop vapour-diffusion method. Two crystal forms were observed. Bipyramid-shaped crystals belonging to space group P4(3)2(1)2, with unit-cell parameters a = b = 62.53, c = 277.4 A diffracted to 1.55 A resolution. The rectangular crystals belonged to space group P2(1), with unit-cell parameters a = 57.94, b = 142.1, c = 153.9 A, beta = 90.5 degrees , and diffracted to 1.80 A resolution.
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