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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/20758
Title: Crystallization and preliminary X-ray diffraction studies of a mosquito-larvicidal toxin from Bacillus thuringiensis subsp. israelensis
Authors: Panadda Boonserm
David J. Ellar
Jade Li
University of Cambridge
The Medical Research Council Laboratory of Molecular Biology
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Mar-2003
Citation: Acta Crystallographica - Section D Biological Crystallography. Vol.59, No.3 (2003), 591-594
Abstract: The Cry4B δ-endotoxin from Bacillus thuringiensis subsp. israelensis is specifically toxic to mosquito larvae. For a better understanding of the mechanism of toxicity, chymotrypsin-activated Cry4B toxin (68 kDa) has been purified and crystallized in sodium bromide at neutral pH. The well formed crystals belong to the rhombohedral space group R32, with unit-cell parameters a = b = 185.82, c = 187.93 Å, and diffracted X-rays to 1.75 Å resolution. The asymmetric unit contains one toxin molecule and 74% solvent content, as shown by molecular replacement from a composite model of the homologous Cry3A and Cry1Aa. The purified protein and crystals both possessed mosquitocidal activity.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0037348708&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/20758
ISSN: 09074449
Appears in Collections:Scopus 2001-2005

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