MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Midbrain_E15.5_H3K4me3_69_117_0.585_1.34334e-268 letter-probability matrix: alength= 4 w= 7 nsites= 100 E= 1.0e-1 0.846479 0.0 0.0 0.153521 0.0 1.0 0.0 0.0 0.035976 0.0 0.922454 0.04157 0.0 0.981944 0.0 0.018056 0.110932 0.857168 0.0 0.0319 0.0 0.870719 0.129281 0.0 0.937582 0.054821 0.0 0.007597