Figure 1.—
Diagrams of the constructs used in this study. Maps (not to scale) of the core X-element at the II-R and XI-L telomeres and the Y′-element at the XII-L telomere are shown at the top. The positions of STAR, the core X- and Y′-elements, the telomeric TG1–3 repeats, ACS, and the binding sites for Abf1p, Reb1p, and Tbf1p are indicated by different patterns and the symbols shown below. The combinations of these elements and the position of the URA3 reporter in the different constructs are shown in the middle.