Genes detected in our screen for which the corresponding <i>Tn</i>5 insertion mutants exhibit the highest gamma radiation sensitive phenotype.

a, bSS, highly sensitive, survival <10-6; S, sensitive, survival comprised between 10-6 and 10-4; s, slightly sensitive, survival comprised between 10-4 and 10-2; R, resistant, survival >10-2. a onto TGY plates supplemented with 40 ng/mL mitomycin C (see Materials and Methods). b onto TGY plates exposed to 600 J m-2 UV-rays (see Materials and Methods). c by using the disc inhibition assay as described in Materials and Methods and Fig 2 (for the inhibition diameters corresponding to the different levels of sensitivity). d NA: Not applicable because of growth defect. (o) gene is located in a putative operon (predicted by FGENESB (www.softberry.com). (u) transposon inserted in the upstream region of the corresponding CDS. Genes detected in our screen for which the corresponding Tn5 insertion mutants exhibit the highest gamma radiation sensitive phenotype.