Msa1, Msa2 and the checkpoint function of Rad53 all contribute to the control of proliferation and the G1 arrest that accompanies growth to stationary phase.

<p>Cell number (A) and percent of cells in G1 (B and C) are plotted as cells grow from log phase to stationary phase as in <a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1006088#pgen.1006088.g002" target="_blank">Fig 2</a>. The hour after which the diauxic shift (DS) has occurred for each strain is noted above. Genotypes as indicated. Number of trials averaged for these figures is shown in parentheses.