Table 1.

Yeast strains used in this study

Strain	Genotype	Source
JSY836	Mata, ura3-52, his3Δ200, trp1Δ63	This laboratory
JSY118	Mata, ura3-52, his3Δ200, trp1Δ63, ptc1::TRP1	This study
FY250	Matα, Mal, Gal2+, ura3-52, his3Δ200, trp1Δ63, leu2Δ1	F. Winston (Winston et al., 1995)a
AMY36	Matα, Mal, Gal2+, ura3-52, his3Δ200, trp1Δ63, leu2Δ1 hog1::URA3	This study
AMY38	Mata/α, ura3-52/ura3-52, his3Δ200/his3Δ200, trp1Δ63/trp1Δ63, ptc1::TRP1/+, +/leu2Δ1, hog1::URA3/+	This study
AMY43	Mata, ura3-52, his3Δ200, trp1Δ63, ptc1::TRP1, hog1::URA3	This study
SEY6210	Mata, ura3-52, leu2-3, 112, his3-Δ200, trp1-Δ901, lys2-801 suc2-Δ9, GAL	S. Emr (Robinson et al., 1988)
JSY2090	Mata, ura3-52, leu2-3, 112, his3-Δ200, trp1-Δ901, lys2-801 suc2-Δ9, GAL, ptc1::URA3	T. Ketela and H. Bussey
JSY2092	Matα, ura3-52, leu2-3, 112, his3-Δ200, trp1-Δ901, lys2-801 suc2-Δ9, GAL, pbs2::KANMX2	T. Ketela and H. Bussey
JSY2093	Mata, ura3-52, leu2-3, 112, his3-Δ200, trp1-Δ901, lys2-801 suc2-Δ9, GAL, pbs2::KANMX2, ptc1::URA3	T. Ketela and H. Bussey
JSY2589	Mata, ura3-52, leu2-3, 112, his3-Δ200, trp1-Δ901, lys2-801 suc2-Δ9, GAL, ptp2::KANMX2	T. Ketela and H. Bussey

^a Same genotype as FY834 but LYS2.