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Báo cáo Y học: Purification, characterization and subunits identification of the diol dehydratase of Lactobacillus collinoides
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The three genespduCDEencoding the diol dehydratase of Lactobacillus collinoides, have been cloned for overexpres-sion in the pQE30 vector. Although the three subunits of the protein were highly induced, no activity was detected in cell extracts. The enzyme was therefore purified to near homo-geneity by ammoniumsulfate precipitation and gel filtration chromatography. In fractions showing diol dehydratase activity, three main bands were present after SDS/PAGE with molecular masses of 63, 28 and 22 kDa, respectively....
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