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Science. 1993 Aug 6;261(5122):759-62.

DNA melting on yeast RNA polymerase II promoters.

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  • 1Section of Biochemistry, Molecular, and Cell Biology, Cornell University, Ithaca, NY 14853.


Transcription-dependent DNA melting on the yeast GAL1 and GAL10 promoters was found to be more closely correlated with the TATA box than the transcription start site. On both these genes, melting begins about 20 base pairs downstream of the TATA box. Physical and genetic analyses suggest that RNA polymerase II associates with this region. Thus, the distance between promoter melting and the TATA box in yeast may be similar to that in higher eukaryotes, even though transcription initiates in a region about 10 to 90 base pairs farther downstream in yeast.

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