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_39_74_0.515_2.305317e-06 letter-probability matrix: alength= 4 w= 13 nsites= 100 E= 1.0e-1 0.068335 0.051888 0.407289 0.472488 0.005342 0.795224 0.083351 0.116083 0.191981 0.689486 0.049661 0.068872 0.01507 0.03804 0.183555 0.763335 0.004644 0.936646 0.029932 0.028778 0.045875 0.054342 0.032529 0.867255 0.020825 0.803956 0.147553 0.027666 0.006348 0.964081 0.016964 0.012607 0.692493 0.044776 0.144325 0.118406 0.01524 0.034884 0.911266 0.038609 0.128605 0.005236 0.649614 0.216545 0.097511 0.209693 0.686668 0.006129 0.751227 0.0 0.15923 0.089544