However , LeuO could increase transcriptional activity in N-minimal-medium , as overexpression of the leuO gene resulted in a 2-fold induction of casA transcription compared to an absence of overexpression in the wild-type Sal-monella strain -LRB- data not shown -RRB- .
However , LeuO could increase transcriptional activity in N-minimal-medium , as overexpression of the leuO gene resulted in a 2-fold induction of casA transcription compared to an absence of overexpression in the wild-type Sal-monella strain -LRB- data not shown -RRB- .
Results Activation of leuO transcription represses SPI-1 To confirm previous evidence indicating that SPI-1 might be repressed by LeuO , we compared the expression of selected SPI-1 genes in the absence of LeuO .
Results Activation of leuO transcription represses SPI-1 To confirm previous evidence indicating that SPI-1 might be repressed by LeuO , we compared the expression of selected SPI-1 genes in the presence .