Additional file 1.
Figure S1. Viability of cells lacking DNA topoisomerase I at various temperatures and salt concentrations. (A) Effect of an increased temperature on ΔtopA cells. The plate photographs shown are of synthetic lethality assays as described in detail in Materials and Methods. The relevant genotype of the construct used is shown above each photograph, with the strain number in parentheses. The growth conditions are shown to the left. The fraction of white colonies is shown below with the number of white colonies/total colonies analyzed in parentheses. (B) Effect of various salt concentrations on the viability of cells lacking topoisomerase I.
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Stockum et al. BMC Microbiology 2012 12:26 doi:10.1186/1471-2180-12-26