Fig 4. Partial suppression of the ALT telomere phenotypes by atr1 and chk1 deletions.
(A) TRF analysis of the uku70 nar1 chk1Δ and uku70 nar1 atr1Δ double mutants after multiple re-streaks on restrictive medium. The indicated strains were passaged at 30°C on YPD. Each streak represents approximately 25 generations of growth. DNAs from streak 3, 5, and 9 of each strain were isolated, treated with PstI, and analyzed by standard telomere Southern analysis. (B) and (C) Pst1-treated DNA was subjected to in-gel hybridization assay to detect unpaired C-strand (B) and unpaired G-strand telomere DNA (C). (D) DNAs from the indicated strains were subjected to C-circle and G-circle assays.
