FIGURE 2.

The L18 mutant is resistant to oxidative stress. A, wild-type and L18 mutant cells were spotted on an SD plate with or without 5 mm H₂O₂ with serial dilution. The plates were incubated for 4 days at 30 °C and photographed. B, total RNAs were isolated from wild-type and L18 mutant cells grown in SD medium until mid-log phase and subjected to Northern blot analysis with a radiolabeled ctt1⁺ probe.