MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Midbrain_P0_H3K27me3_29_178_0.521_6.04282e-06 letter-probability matrix: alength= 4 w= 8 nsites= 100 E= 1.0e-1 0.164 0.001 0.001 0.834 0.076 0.268 0.001 0.655 0.594 0.002 0.001 0.403 0.001 0.289 0.608 0.102 0.001 0.001 0.007 0.991 0.136 0.001 0.699 0.164 0.81 0.001 0.188 0.001 0.997 0.001 0.001 0.001