p64-induced stimulation of
Cbf1p DNA binding. (A) Coomassie stained SDS–gel
of purified, recombinant CBF3 subunit p64 (lane 1). M, molecular
weight standard proteins. (B) CEN 9
DNA was incubated with 10, 20 and 40 nM p64, and reaction mixtures
analysed by gel shift (lanes 1, 2 and 3, respectively). No complex is
observed. (C) CEN 9 DNA was incubated
with 0.2 nM of Cbf1p (lanes 1 and 2) or Cbf1ΔN209p
(lanes 3 and 4) in the absence (lanes 1 and 3) or presence (lane 2
and 4) of 20 nM p64.