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Figure 4 | BMC Microbiology

Figure 4

From: Genes regulated by the Escherichia coli SOS repressor LexA exhibit heterogenous expression

Figure 4

Fluorescence images showing simultaneous expression of the cka-DsRed-Express2 and lexA-gfp transcriptional fusions. A:. Expression of cka-DsRed-Express2 gene fusion. B: Expression of lexA-gfp gene fusion in RW118. The arrow indicates a cell with high level expression of cka, but not lexA, showing that colicin activity gene expression can occur in the absence of the SOS response.

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