期刊
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
卷 77, 期 4, 页码 871-878出版社
SPRINGER
DOI: 10.1007/s00253-007-1215-2
关键词
Corynebacterium glutamicum; Cre; loxP; integration
The engineering of Corynebacterium glutamicum is important for enhanced production of biochemicals. To construct an optimal C. glutamicum genome, a precise site-directed gene integration method was developed by using a pair of mutant lox sites, one a right element (RE) mutant lox site and the other a left element (LE) mutant lox site. Two DNA fragments, 5.7 and 10.2 kb-long, were successfully integrated into the genome. The recombination efficiency of this system compared to that obtained by single crossover by homologous recombination was 2 orders of magnitude higher. Moreover, the integrated DNA remained stably maintained on removal of Cre recombinase. The Cre/mutant lox system thus represents a potentially attractive tool for integration of foreign DNA in the course of the engineering of C. glutamicum traits.
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