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Figure 6 | BMC Evolutionary Biology

Figure 6

From: A new experimental approach for studying bacterial genomic island evolution identifies island genes with bacterial host-specific expression patterns

Figure 6

Expression of PR 4318 and ΔPR 4318 lacZ constructs in S. typhimurium. The STM4318 promoter region (PR 4318) was subcloned and transcriptionally-fused to a promoterless lacZ gene on a broad-host-range plasmid and assayed for beta-galactosidase expression in the S. typhimurium hosts χ3339 WT and χ3339 Δ island 4305. The same subcloned fragment but deleted for the predicted STM4318 promoter region (Δ PR 4318) was also used similarly. The results are given as a beta-gal expression ratio as indicated in the Y-axis label and in the Materials and Methods.

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