Recognition sequence enrichment correlates with ChIP/chip rank. Fold enrichment of matches to a position weight matrix (PWM) in the 500-bp windows around ChIP/chip peaks (± 250 bp), in non-overlapping cohorts of 200-peaks down the ChIP-chip rank list to the 25% FDR cutoff. Matches to the PWM below a P-value of ≤ 0.001 were scored. The PWMs used are shown as sequence logo representations . The most highly bound peaks are to the left along the x-axis and the location of the 1% FDR threhold is indicated by a black, vertical dotted line. Shown are plots for the (a) HRY 2, (b) PRD 1, (c) SNA 2 and (d) TLL 1 antibodies.