pMTLBS72枯草芽孢桿菌表達載體質粒 BioVector NTCC質粒載體菌種細胞基因保藏中心

A series of plasmid-based expression vectors have been constructed allowing stable intracellular expression of recombinant proteins in Bacillus subtilis strains. These expression vectors are based on the recently described Escherichia coli-B. subtilis shuttle vector pMTLBS72 which replicates as theta circles. Besides the weak constitutive promoter P(lepA), we inserted three different controllable promoters: P(gsiB) which can be induced by heat and acid shock, and by ethanol, P(xylA) and P(spac) which respond to the addition of xylose and IPTG, respectively. The versatility of these expression vectors was demonstrated by fusing their promoters to a reporter gene and by overexpression of the HtpG protein with three of them. All recombinant vectors exhibited full structural stability.
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