The Eukaryotic Promoter: the TATA Box
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A eukaryotic promoter for RNA polymerase II contains a TATA box, an AT-rich sequence 25 to 35 base pairs upstream of the start site.
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A TATA box's sequence, resembling TATAAA, marks where the initiation complex assembles for a gene.
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A eukaryotic promoter is far larger than a prokaryotic one — the TATA box is one element within it, not the whole promoter.