A binding activity specific for the upstream activating sequence of the GAL1-GAL10 promoter of Saccharomyces cerevisiae has been purified 220-fold on the basis of a nitrocellulose filter-binding assay. The binding activity is enriched in a nuclear preparation and is likely to be the GAL4 gene product. DNase I-protection mapping patterns reveal binding to two 30-base-pair regions at the boundaries of the sequence. A nearly identical mapping pattern is obtained with the coordinately regulated GAL7 promoter. The four 30-base-pair regions of binding in the two promoters are closely homologous, with a core consensus sequence of C-G-(CG)-(TG)-C-A-A-C-A-G-T-G-C-T-C-C-G-A-A-(GC)-G-A-T. A synthetic oligonucleotide with such a sequence competes with the upstream activating sequence in the binding region.
|Original language||English (US)|
|Number of pages||5|
|Journal||Proceedings of the National Academy of Sciences of the United States of America|
|State||Published - Jan 1 1985|
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