Anti-Cdc2 antibody (PSTAIRE; Sigma Chemical) was used as loading control. Northern blot analysis Aliquots of the cultures were recovered at different times, total RNA preparations obtained and resolved through 1.5% agarose-formaldehyde gels, and hybridizations were performed as previously described [35]. The probes employed were a 2.1 Kbp fragment of the pyp2 + gene amplified by PCR with the 5′ oligonucleotide CCGAGAGCGTTTCTTGGA and the 3′ oligonucleotide AAGGGCTTGGAAGCCTGG, a 1 Kbp fragment of the fbp1 + gene amplified with the 5′oligonucleotide CTTCCAAGCCAAATACTG and the 3′oligonucleotide GATCTCGACGAAATCGAC, and a 1 Kbp fragment

of the leu1 + gene amplified with the 5′ oligonucleotide TCGTCGTCTTACCAGGAG and the 3′ oligonucleotide CAACAGCCTTAGTAATAT. Ready-To-Go DNA labelling beads and the Rapid-Hyb buffer STAT inhibitor (GE Healthcare) were used for DNA labeling and hybridization, respectively. mRNA levels were quantified in a Phosphorimager (Molecular Dynamics) and compared with the internal control (leu1 + mRNA). Plate assay of sensitivity for growth Wild-type and mutant strains of S. pombe were grown in YES liquid medium (7% glucose) to an OD600= 0.6. Appropriate dilutions were spotted per duplicate on YES solid medium supplemented with either 7% glucose or 2% glycerol plus 3% ethanol, and

in the presence/absence of 30 mM NAC. Plates were incubated at 28°C for 5 days and then photographed. Reproducibility of results All experiments were repeated at least three times. Depending on the experiment, mean relative units + SD WZB117 mouse and/or representative results are shown. Acknowledgements This work was supported in part by grants from MEC BFU2011-22517 to JC, and 15280/PI/10 from Fundación Séneca, Spain. ERDF (European Regional Development Fund) co-funding Erastin mouse from the EU. We thank JB Millar (University of Warwick, United Kingdom) for kind supply of yeast strains, and to F Garro for technical

assistance. LSM is a predoctoral fellow (Formación de Personal Investigador) from Ministerio de Economía y Competitividad, Spain. MM is a postdoctoral researcher (Juan de la Cierva Program) from Ministerio de Economía y Competitividad, Spain. References 1. Rolland F, Winderickx J, Thevelein JM: Glucose-sensing mechanisms in eukaryotic cells. Trends GDC-0449 research buy Biochem Sci 2001, 26:310–317.PubMedCrossRef 2. Gancedo JM: The early steps of glucose signaling in yeast. FEMS Microbiol Rev 2008, 32:673–704.PubMedCrossRef 3. Yanagida M: Cellular quiescence: are controlling genes conserved? Trends Cell Biol 2009, 19:705–715.PubMedCrossRef 4. Flores CL, Rodriguez C, Petit T, Gancedo C: Carbohydrate and energy-yielding metabolism in non-conventional yeasts. FEMS Microbiol Rev 2000, 24:507–529.PubMed 5. Van Dijken JP, Weusthuis RA, Peonk JT: Kinetics of growth and sugar consumption in yeasts. Antonie van Leeuwenhoek 1993, 63:343–352.PubMedCrossRef 6.