MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Midbrain_E11.5_H3K27me3_47_171_0.503_0.01482199 letter-probability matrix: alength= 4 w= 12 nsites= 100 E= 1.0e-1 0.001 0.001 0.997 0.001 0.997 0.001 0.001 0.001 0.001 0.001 0.997 0.001 0.001 0.997 0.001 0.001 0.001 0.997 0.001 0.001 0.001 0.001 0.997 0.001 0.001 0.001 0.056 0.942 0.942 0.056 0.001 0.001 0.001 0.001 0.997 0.001 0.001 0.997 0.001 0.001 0.942 0.056 0.001 0.001 0.001 0.001 0.001 0.997