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Sequence logos of different Pol III associated promoter elements derived by MEME. (a) Intronic B box elements were detected 26 times among the 59 U6 snRNA intron sequences. (b) B box motifs in the flanking regions were exclusively found in the 300nt downstream region of 111 U6 transcripts. (c) A box motifs were detected in the mature snRNA of 163 genes. (d) TATA box elements were found in 201 of the 334 300nt long upstream flanking region.
