MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Forebrain_E15.5_H3K27ac_18_173_0.547_4.821716e-118 letter-probability matrix: alength= 4 w= 8 nsites= 100 E= 1.0e-1 0.276 0.177 0.432 0.116 0.001 0.383 0.434 0.183 0.019 0.503 0.001 0.477 0.001 0.001 0.001 0.997 0.001 0.001 0.468 0.53 0.001 0.397 0.273 0.329 0.001 0.764 0.234 0.001 0.001 0.218 0.425 0.356