Table 1. Yeast strains used in this study.

Strains	Genotype	Source/Ref.
W303-1A	MATa ade2-1 can1-100 his3-11,15 leu2-3112 trp1-1 ura3-1	Thomas and Rothstein (1989) [21]
W303 cdc35 pde2 yak1	MATa W303-1A cdc35::KanMX pde2::TRP1 yak1::LEU2	Görner et al. (2002) [22]
SP1	MATa his3 leu2 ura3 trp1 ade8 can1	Nikawa et al. (1987) [23]
S18-1D	MATα SP1 tpk1 w1 tpk2::HIS3 tpk3::TRP1	Nikawa et al. (1987) [23]
SGP406	MATa SP1 tpkl::URA3 tpk2::HIS3 tpk3::TRPl yakl::LEU2	Garrett et al. (1989) [24]
JW1	MATa W303-1A bcy1::URA3	Griffioen et al. (2000) [14]
GG104	MATa W303-1A cdc35::KanMX pde2::TRP1 msn2::HIS3 msn4::TRP1	Roosen et al. (2005) [25]
PM731	MATa W303-1A gpa2::URA3	Colombo et al. (1998) [26]
Tlys86	MATa leu2::hisG ura3-52 trp1::hisG	Magherini et al.(2006) [27]
W303-1A-NES-Ras2	W303-1A ras2::NESRAS2-SpHIS5	This work
Tlys86-NES-Ras2	Tlys86 ras2::NESRAS2-URA3	This work