Accumulation in S.cerevisiae of
mature polyA– hTR requires the presence of Cbf5p,
Nhp2p and Nop10p. GAL::cbf5 (lanes 1–5), GAL::gar1 (lanes 6–10), GAL::nhp2 (lanes 11–15) and GAL::nop10 (lanes 16–20)
strains transformed with phTR were grown in galactose-containing
medium (lanes 1, 6, 11 and 16) and were then transferred to glucose-containing
medium for 12, 24, 48 or 72 h. At each time-point, culture samples
were collected from which total RNAs were extracted. These were
separated on 6% polyacrylamide gels and transferred to
nylon membranes. RNAs indicated on the left were detected by hybridization
with specific oligonucleotide probes.