MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Heart_E12.5_H3K27ac_91_88_0.504_7.551238e-07 letter-probability matrix: alength= 4 w= 10 nsites= 100 E= 1.0e-1 0.0 0.487351 0.0 0.512649 0.207331 0.025701 0.744684 0.022284 0.035997 0.020329 0.928339 0.015335 0.132229 0.576545 0.013165 0.278061 0.016281 0.045337 0.333125 0.605257 0.009795 0.947875 0.020295 0.022035 0.055823 0.072919 0.073547 0.797711 0.0 0.97256 0.02744 0.0 0.861441 0.071181 0.054309 0.013069 0.0 0.040964 0.946918 0.012118 MOTIF Midbrain_E14.5_H3K27ac_68_137_0.520_1.705045e-24 letter-probability matrix: alength= 4 w= 10 nsites= 100 E= 1.0e-1 0.0 0.954561 0.020802 0.024637 0.016826 0.034957 0.15104 0.797177 0.005278 0.02209 0.972633 0.0 0.947463 0.031179 0.0 0.021358 0.203943 0.053657 0.7424 0.0 0.955424 0.02084 0.0 0.023736 0.35318 0.060391 0.574043 0.012386 0.03664 0.858217 0.093869 0.011275 0.022449 0.928732 0.011116 0.037703 0.42895 0.016495 0.554555 0.0