MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF E021_H3K27ac_33_213_0.514_8.251466e-15 letter-probability matrix: alength= 4 w= 12 nsites= 100 E= 1.0e-1 0.659 0.001 0.001 0.339 0.001 0.001 0.296 0.702 0.001 0.506 0.001 0.492 0.001 0.001 0.001 0.997 0.001 0.997 0.001 0.001 0.001 0.997 0.001 0.001 0.001 0.85 0.001 0.148 0.001 0.001 0.001 0.997 0.149 0.001 0.001 0.849 0.001 0.997 0.001 0.001 0.178 0.001 0.82 0.001 0.001 0.997 0.001 0.001