FIG. 4.
A sin4 mutation suppresses swi6 but not swi2. S1 nuclease protection assays were performed using probes specific for HO and CMD1 (internal control). (A) HO is not expressed in swi2 sin3 or swi2 sin4 strains. RNAs were prepared from strains DY150, DY3944, DY773, DY2870, DY1702, and DY2499. (B) HO is expressed in swi6 sin4 strains. RNAs were prepared from strains DY150, DY151, DY5780, DY5781, DY5907, DY5908, DY5909, DY5910, DY5911, and DY5912. (C) HO is not expressed in a swi6 sin3 strains. RNAs were prepared from strains DY150, DY5780, DY773, and DY6103.
