FIG. 1.

radC102 confers extreme UV sensitivity in combination with ruv mutations. Values are averages from one experiment with three independent cultures of each strain. The error bars represent one standard deviation. Similar results were obtained in another experiment (data not shown). All strains were grown at 32°C to prevent accumulation of suppressor mutants or revertants (detected as heterogeneity of colony size and UV resistance) in the double ruv recG mutants (17). The eda-51::Tn10 transposon linked with ruvC53 has no phenotype on its own (data not shown). The strains are (from left to right): SMR4562, SMR5441, RSH316, RSH154, SMR5517, SMR2041, SMR5509, SMR5518, and SMR624.