MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Midbrain_P0_H3K9ac_38_171_0.588_4.473408e-240 letter-probability matrix: alength= 4 w= 8 nsites= 100 E= 1.0e-1 0.001 0.669 0.329 0.001 0.001 0.317 0.681 0.001 0.113 0.295 0.334 0.259 0.113 0.116 0.378 0.393 0.261 0.001 0.001 0.737 0.454 0.544 0.001 0.001 0.001 0.285 0.394 0.319 0.397 0.001 0.001 0.601