Evolution of Streptomyces pristinaespiralis for resistance and production of pristinamycin by genome shuffling.

Abstract excerpt

Improvement of pristinamycin production by Streptomyces pristinaespiralis was performed by using recursive protoplast fusion and selection for improved resistance to the product antibiotic in a genome shuffling format. A 100-microg/ml pristinamycin resistant recombinant, G 4-17, was obtained after four rounds of protoplast fusion, and its production of pristinamycin reached 0.89 g/l, which was increased by 89.4%...

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