Quantitative phosphoproteomics dataset showing phosphorylation sites enriched in cells lacking RAD9. Among the most highly enriched sites are Sgs1 T1269, Uls1 T540, Mec1 S1964, and 2 S-N sites in Rfa2. This response is similar in both the presence of 40μg/mL phleomycin (x axis) and 0.02% MMS (y axis). Note downregulation of Rad53 signaling (red dots) due to absence of RAD9. 