The PCR products obtained with the T7 Sequencing Primer/3′AD Sequencing Primer pair were cloned and sequenced as described above. Co-immunoprecipitation (Co-IP) S. cerevisiae diploids obtained in the yeast two-hybrid assay were click here grown in 125 ml flasks containing 25 ml of QDO for 16 h, harvested by centrifugation and resuspended
in 4 ml containing phosphate buffer saline (400 μl) with phosphatase inhibitor (400 μl), deacetylase inhibitor (40 μl) (Active Motif North America, Carlsbad, CA, USA) and protease inhibitors cocktail (40 μl) (EDTA-free, Thermo Scientific, Pierce Biotechnology, Rockford, IL, USA). The cells were frozen in a porcelain mortar in liquid nitrogen, glass beads added and the cells broken as described previously [63]. The cell extract was centrifuged and the supernatant used for Co-IP using the Immunoprecipitation Starter Pack (GE Healthcare, Bio-Sciences AB, Bjorkgatan, Sweden) as described by the manufacturer. Briefly, 500 μl of the cell extract (1–2 ug of protein/ml)
Salubrinal were combined with 1–5 μl of the anti-cMyc antibody (Clontech, Corp.) and incubated at 4°C for 4 h, followed by the addition of protein G beads and incubated at 4°C overnight in a rotary shaker. The suspension was centrifuged and the supernatant discarded, 500 μl of the wash buffer added followed by re-centrifugation. This was repeated 4 times. The pellet was resuspended in Laemmeli buffer (20 μl) and heated for 5 min at 95°C, centrifuged and the supernatant used for 10% SDS PAGE at 110 V/1 h. Pre-stained isometheptene molecular weight standards were electrophoresed in outside lanes of the gel (BioRad Corporation, Hercules, CA, USA). Western Blots Western blots were done as described by us previously [63]. The electrophoretically separated proteins were transferred to nitrocellulose membranes using the BioRad Trans Blot SystemR for 1 h at 20 volts. After transferring, the nitrocellulose strips were blocked with 3% gelatin in TTBS (20 mM Tris, 500 mM NaCl, 0.05% Tween-20, pH 7.5)
at room temperature for 30–60 min. The strips were washed for 5–10 min with TTBS. The TTBS was removed and the strips incubated overnight in the antibody solution containing 20 μg of antibody, anti-cMyc or anti-HA (Clontech, Corp.) was added to each strip. Controls where the primary antibody was not added were included. The antigen-antibody reaction was detected using the Immun-Star™ AP chemiluminescent protein Enzalutamide datasheet detection system from BioRad Corporation as described by the manufacturer. Induction of the yeast to mycelium transition The yeast form of the fungus was obtained from conidia as described previously [2]. Briefly, yeast cell were grown for 5 days from conidia in 125 ml flasks containing 50 ml of medium M with aeration at 35°C. These cells were filtered through sterile Whatman #1 filters (GE Healthcare Life Sciences).