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Staphylococcus xylosus AF208229 lipase was expressed in E. coli containing an histidine-tag (WT-Val). In the present work, in order to check the importance of the residue 309 in the specific activity, the amino acid side chain residue valine 309 was substituted by aspartate or lysine through site-directed mutagenesis. Both mutant lipases (MUT-Lys and MUT-Asp) were expressed in E. coli and the recombinant...
Staphylococcus xylosus is a microorganism involved in fermentation of meat products and also a natural producer of extracellular lipases. The aim of the present work was to clone and express in E. coli a lipase from S. xylosus (AF208229). This lipase gene (1084 bp) was amplified from a S. xylosus strain isolated from naturally fermented salami and introduced in pET14b expression vector in order to...
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