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Construction of conjugal transfer system of Streptomyces cinnamonensis and effect of PCR-mediated nsdA gene disruption on its secondary metabolism
Published online by Cambridge University Press: 27 June 2008
Abstract
Intergeneric transfer of plasmid vectors pSET152 and pHL212 from donor Escherichia coli ET12567/pUZ8002 and S17-1 to Streptomyces cinnamonensis was demonstrated and optimized. Assisted by this conjugation system, nsdA gene disruption was achieved through PCR-targeted gene replacement. One AprRKanS exconjugant BIB309 was then isolated and confirmed to be the nsdA null mutant. Compared with the starting strain, monensin production by the nsdA− mutant BIB309 increased 270% in vitro.
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- Copyright © China Agricultural University 2008
Footnotes
First published in Journal of Agricultural Biotechnology 2007, 15(6): 1042–1047