Gezielte Optimierung von Escherichia coli BL21(DE3)

BIOspektrum - Tập 19 - Trang 211-213 - 2013
Stephan Noll1, Jan Reyelt1, Thomas Rysiok2, Roland Kellner2, Detlef Güssow2, Stefan Jäkel2, Stefanie Hager1, Harald Kranz1
1Gene Bridges GmbH, Heidelberg, Germany
2Merck KGaA, Darmstadt, Germany

Tóm tắt

Red/ET recombination allows for extensive and base-precise manipulations of the Escherichia coli genome. Here we describe how this technology can be applied to improve the performance of the common expression host E. coli BL21(DE3): deletion of the DE3 sequence dispensable for T7-based gene expression enhances strain safety while recovery of the chromosomal phosphogluconolactonase activity prevents random gluconoylation of a heterologous target protein.

Tài liệu tham khảo

Noll S, Hampp G, Zeppenfeld T et al. (2009) Recombineering — auf dem Weg zur E. coli-Zellfabrik. BIOspektrum 4:411–413

Thomason LC, Court DL, Datta AR et al. (2004) Identification of the Escherichia coli K-12 ybhE gene as pgl, encoding 6-phosphogluconolactonase. J Bacteriol 186:8248–8253