FIG. 5.

UV sensitivity of various uvrD strains. Experiments were carried out at 37°C as described in Materials and Methods. Data (log survival) are expressed as the logarithmic function of the number of UV-irradiated cells forming colonies divided by the number of colonies formed by unirradiated cells. (A) □, SK9040 (uvrDΔ294/pWSK29); ◊, SK9041 (uvrDΔ294/uvrD⁺); ○, SK9054 (uvrDΔ294/uvrD302); ⊞, SK9055 (uvrDΔ294/uvrD303); ▵, SK9056 (uvrDΔ294/uvrD304). (B) □, SK707 (uvrD⁺); ◊, SK9061 (uvrD⁺/uvrD⁺); ○, SK9064 (uvrD⁺/uvrD302); ▵, SK9065 (uvrD⁺/uvrD303); ⊞, SK9066 (uvrD⁺/uvrD304).