MEME version 4 ALPHABET= ACGT strands: + - Background letter frequencies A 0.25 C 0.25 G 0.25 T 0.25 MOTIF Limb_E13.5_H3K27ac_49_24_0.524_1.425114e-20 letter-probability matrix: alength= 4 w= 11 nsites= 100 E= 1.0e-1 0.969628 0.0 0.0 0.030372 0.0 0.388157 0.605783 0.006059 0.0 0.312356 0.642952 0.044692 0.01996 0.071036 0.909003 0.0 0.93302 0.0 0.012157 0.054823 0.013601 0.341871 0.614248 0.03028 0.033304 0.0 0.929663 0.037034 0.04077 0.93221 0.016833 0.010187 0.042426 0.929386 0.0 0.028188 0.23356 0.257935 0.44775 0.060755 0.06931 0.523019 0.0 0.40767 MOTIF Forebrain_P0_H3K4me1_74_10_0.510_2.963267e-07 letter-probability matrix: alength= 4 w= 12 nsites= 100 E= 1.0e-1 0.829967 0.08626 0.064034 0.019738 0.068353 0.184162 0.741371 0.006115 0.658793 0.191434 0.024477 0.125296 0.032095 0.100974 0.723756 0.143176 0.073928 0.02383 0.871038 0.031204 0.054285 0.031122 0.910398 0.004196 0.801931 0.155852 0.009371 0.032847 0.092992 0.107568 0.755255 0.044185 0.03431 0.052487 0.902809 0.010394 0.003682 0.727146 0.172621 0.096551 0.070232 0.694155 0.008271 0.227342 0.549153 0.171498 0.27935 0.0