mRNAs rich in GCAUs have increased abundance in <i>whi3</i> mutants by microarray.

<p>Genes were divided into quartiles according to their GCAU density (Materials and methods). For each quartile, change in mRNA abundance is shown in (A) <i>whi3</i> mutants relative to wild-type; (B), <i>WHI3</i> over-expressors relative to wild-type. As a control, genes were divided into quartiles according to their CGUA density (an irrelevant control motif). For each quartile, change in mRNA abundance is shown in (C) <i>whi3</i> mutants relative to wild-type; and (D) <i>WHI3</i> over-expressors relative to wild-type. Changes are shown as the log2 of the ratio of abundance in <i>whi3</i> divided by abundance in WT (A, C) or the ratio of abundance in <i>WHI3X4</i> divided by abundance in WT (B, D).