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Numbers and categories of transcription factor binding sites (TFBSs) in the HvABCG31 promoter of Hordeum vulgare ssp. spontaneum. Different grids in the histogram refer to specific transcription factor binding sites; Sites indicated in red occurred at significantly higher frequencies than random, based on a permutation test with 10,000 runs; their sequences are given and related transcription factors are listed in brackets.
