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Occurrence of ethylene transcription factor-responsive elements in the promoter regions of OsPT2, OsPT6 and OsPT8. A stretch of 2500 bp upstream of the transcription initiation site was examined. The predicted ethylene-responsive elements AWTTCAAA and GCCGCC are represented by triangles and oval symbols, respectively. The numbering below each symbol indicates the position of each motif relative to the site of initiation of transcription.
