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. 2009 May 25;4(5):e5681. doi: 10.1371/journal.pone.0005681

Figure 1. Substitution density in different classes of sites.

Figure 1

From left to right: 3′ UTR, miRNA seed matches (sequences in 3′ UTRs reverse-complementary to bases 1–7 or 2–8 of mature miRNAs), PITA sites (top 15000 sites ranked by ddG, 0/0 set), Pictar sites (S1 set), Accessibility conservation (conserved but not necessarily aligned sites with ddG<−7 in each of 4 species), Conserved 8mers (conserved and aligned in 4 species), Conserved Pictar sites (S1 anchors, i.e. only conserved S1 sites), Stark sites (Branch Length Score = 0.9).