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. Author manuscript; available in PMC: 2009 Oct 29.
Published in final edited form as: Mol Microbiol. 2007 Dec 7;67(2):350–363. doi: 10.1111/j.1365-2958.2007.06036.x

Fig. 2.

Fig. 2

IR sensitivity of S. meliloti Ku (sku1, sku2, sku3 and sku4) deletion strains.

A. Stationary-phase cells of S. meliloti wild type (Rm1021), sku1, sku2, sku3, sku4 deletion mutant (Rm1021Δsku1, Rm1021Δsku2, Rm1021Δsku3 and Rm1021Δsku4) were irradiated with γ-rays. The percentage survival for each strain over the indicated range of doses was determined, and the mean from at least three independent experiments was plotted. Error bars denote standard error from the mean for each point.

B. IR sensitivity of the sku1sku3 double mutant (Rm1021Δsku13), sku1sku3sku4 triple mutant (Rm1021Δsku134) and sku1sku2sku3sku4 quadruple mutant (Rm1021Δsku1234). The wild type (Rm1021) and Rm1021Δsku2 were also treated as internal controls.