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Schematic representation of AtXYL1 promoter. A, Sequence from −500 to the start codon. ▾, Transcription start site. A TATA-like sequence is underlined. Potential binding sites for SBF-1 and GT-1, transcription factors of the GT-family, are boxed. B, Concise view of binding sites arrangement in AtXYL1 and rbcS-3 promoters.
