The yeast ISWI genes show genetic
interactions. (A) The synthetic stress-sensitive phenotypes of
mutants. Wild-type and mutant cells were cultured to saturation, and
tenfold dilutions were made for spotting. The medium and the
temperatures used are indicated. Formamide plate, containing 3%
formamide in YPD, was incubated at 30°C. Relevant genotypes of the
mutants are indicated in on left. (B) Rescue of a
synthetic temperature-sensitive phenotype of the isw1 isw2
chd1 mutant. The triple mutant was transformed with the plasmids
indicated at left, streaked on synthetic medium lacking
uracil, and incubated at the temperatures indicated.