Table 1.

Yeast strains used

Strain	Description
NOY505	MATa ade2–1 ura3–1 trp1–1 leu2–3,112 his3–11 can1–100
NOY556	Matα ade2–1 ura3–1 his3–11 trp1–1 leu2–3,112 can1–100 pNOY103
NOY678	MATa/MATα ade2–1/ade2–1 ura3–1/ura3–1 his3–11/his3–11 trp1–1/trp1–1 leu2–3,112/leu2–3,112 can1–100/can1–100 RRN9/rrn9Δ∷HIS3 (Ref. 8)
NOY684	MATα ade2–1 ura3–1 his3–11 trp1–1 leu2–3,112 can1–100 rrn9Δ∷HIS3 (a haploid segregant derived from NOY678); Non–PSW (unstable)
NOY703	MATa ade2–1 ura3–1 his3–11 trp1–1 leu2–3,112 can1–100 rrn9Δ∷HIS3 pNOY103; Non–PSW
NOY794	Same as NOY852, but rpa135Δ∷LEU2
NOY852	Same as NOY684; PSW
NOY877	Same as NOY852, but carries pNOY199; PSW
NOY878	Same as NOY703, but PSW
NOY896	Same as NOY703 (non–PSW), but rap135Δ∷LEU2
NOY897	Same as NOY878 (PSW), but rpa135Δ∷LEU2
NOY898	MATα ade2–1 ura3 his3–11 rpb1–1 pNOY103
NOY899	MATα ade2–1 ura3 his3–11 leu2–3,112 rpb1–1 rrn9Δ∷HIS3 pNOY103; Non–PSW
NOY900	MATα ade2–1 ura3 his3–11 leu2–3,112 rpb1–1 rrn9Δ∷HIS3 pNOY103; PSW