کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5912902 | 1161621 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement of pBBR1MCS plasmids, a very useful series of broad-host-range cloning vectors
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
ژنتیک
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چکیده انگلیسی
pBBR1MCS vectors are small in size, contain unique cloning sites within the lacZα gene, and are mobilizable and compatible with various plasmid incompatibility groups. We cloned four genes for aminoglycoside resistance methyltransferases from the Arm and Kam families into pBBR1MCS-3 and expressed them in Escherichia coli. The activity of two of these enzymes was impaired because of the fusion with the first 20 amino acids of the β-galactosidase α-peptide derived from the pBBR1MCS-3 vector. In order to overcome this problem, we introduced by site-directed mutagenesis a new NdeI restriction site into pBBR1MCS-3 to generate a start codon directly at the beginning of lacZα gene. We modified the pBBR1MCS-2, 4 and 5 plasmids in the same manner and obtained the enhanced pBBR1MCS_START vector series that retains all the useful features of the previous vectors, but eliminates the unknown effect of the fusion with the β-galactosidase α-peptide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plasmid - Volume 70, Issue 2, September 2013, Pages 263-267
Journal: Plasmid - Volume 70, Issue 2, September 2013, Pages 263-267
نویسندگان
Sonja ObraniÄ, Fedora BabiÄ, Gordana MaraviÄ-VlahoviÄek,