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. 2011 Jun 30;7(6):e1002156. doi: 10.1371/journal.pgen.1002156

Figure 4. Differential effect of ssbB − and ssbBΔ7 mutations on chromosomal and plasmid chromosomal transformation.

Figure 4

(A) Competent cells (∼1.5 108 cfu ml−1) of strain R1818 (ssbB +), R2647 (ssbBΔ7) and R2646 (ssbB −) were exposed to subsaturating concentrations (0.05 to 1 ng ml−1) of an 888-bp rpsL41 fragment. SmR transformants were scored. (B) Transformation with subsaturating concentrations of pLS1 plasmid DNA (0.00025 to 0.025 µg ml−1) using the same competent cells as in panel A. TcR transformants were scored.