Fig. 5. Size-scaling increases non-linearly with number of binding sites for SBF or MBF transcription factors.
Transcripts were grouped by the number of transcription factor consensus sites in the promoter (x-axis). Promoters are defined as 300bp upstream of transcription start sites, defined as in Xu et al. (2009). SCB (grey) = “CACGAAA” or “CGCGAAA”. MCB (black) = “ACGCGT”. SCB sites were counted on both strands. MCB sites (palindromic) counted on one strand. The plotted boxes include the second and third quartiles of size scaling values. Lines connect medians. Only one gene contains 4 MCB sites. Results for a control factor, Cbf1 (CACGTG), are also shown.