Regulator type breakdown in TFBS footprints. Pie chart of the percentage of footprints for each regulator containing an inverted repeat with both words greater than 3 nucleotides (includes palindromic matches of length 4 and 5) and palindromic mismatches between word 1 and word 2 of 0, 1 or 2. Data labels are of the form Regulator_mismatch.
Laing et al. BMC Genomics 2008 9:79 doi:10.1186/1471-2164-9-79