Figure 2. Cumulative cluster frequencies of CAC-containing motifs in human 3'-UTRs. Trends was used to determine the cumulative frequencies of clusters of 5–7 nucleotide long CAC-containing repeated motifs in the 'match' table (blue line) and 'match_random' table (red line). As can be seen, the frequencies of CAC-containing motifs with low P-values are much higher in real 3'-UTRs than they are in the shuffled ones. This type of separation is seen in all seven vertebrate species and with independently shuffled control data sets (data not shown).
Image published in: Andken BB et al. (2007)
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