کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4495325 | 1318753 | 2015 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Cloning and Expression of Bile Salt Hydrolase Gene from Lactobacillus plantarum M1-UVS29 Cloning and Expression of Bile Salt Hydrolase Gene from Lactobacillus plantarum M1-UVS29](/preview/png/4495325.png)
We cloned and expressed bile salt hydrolase gene of Lactobacillus plantarum M1-UVS29 in Lactococcus lactis NZ9000 successfully. Gene-specific primers for amplification of L. plantarum bsh were designed by using sequence which availabled from GenBank. The production of PCR amplicon was confirmed by sequencing and cloned into pMD18-T vector, and then recombined into expression vector pNZ8148 and yielding vector pNZ8148-BSH. pNZ8148-BSH was transferred into Lactococcus lactis NZ9000. Sequencing indicated that the cloned bsh fragment contained 995 nucleotides, and shared 99.3% sequence homology with bsh gene from L. plantarum MBUL10. Cloned bsh fragment was successfully transduced into NICE expression system and confirmed by PCR and restriction digest. Recombinant BSH protein was analyzed by SDS-PAGE. The molecular weight of BSH protein was approximately 37 ku. Activity of the expressed protein was 0.77 μmol
• min−1. The successfully expressed proteins by genetic engineering technology made the function of lactic acid bacteria be abundant and laid the foundation for further researches into cholesterol-lowering lactic acid bacterium food and probiotics.
Journal: Journal of Northeast Agricultural University (English Edition) - Volume 22, Issue 2, June 2015, Pages 60-66