This includes the two borderline significant differences (Fig. 2 , filter/panel D1).
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The orientation of transcription factor binding site motifs in gene promoter regions: does it matter?
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The sentences
While our study revealed clear evidence for the functional effect of the presence of reported TFBS-motifs on co-expression regulation of downstream genes, no significant difference was apparent with regard to motif orientation.
The percentage of random motifs assuming actual motif compositions as background was even slightly increased, albeit at marginal significance levels only (22.7 %; Fisher exact test, p M = 0.015).