Title : Transcriptional regulation by an upstream repression sequence from the yeast enolase gene ENO1.

Pub. Date : 1995 Sep 15

PMID : 7502579






11 Functional Relationships(s)
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1 The activity of an upstream repression sequence (URS element) that mediates a 20-fold repression of ENO1 expression in cells grown in a medium containing glucose was characterized. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
2 Sequences that are sufficient for orientation-dependent ENO1 URS element activity were mapped between positions -241 and -126 relative to the ENO1 transcriptional initiation site. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
3 Sequences that are sufficient for orientation-dependent ENO1 URS element activity were mapped between positions -241 and -126 relative to the ENO1 transcriptional initiation site. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
4 The ENO1 URS element repressed transcription of the yeast CYC1 gene when positioned between the CYC1 upstream activation sequences (UAS elements) and TATAAA boxes. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
5 The ENO1 URS element failed to repress transcription of the wild-type yeast enolase gene ENO2; however, expression of an ENO2 gene lacking one of the ENO2 UAS elements was efficiently repressed by the ENO1 URS element, suggesting that the URS element interferes with the transcriptional activation by some, but not all, UAS elements. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
6 The ENO1 URS element failed to repress transcription of the wild-type yeast enolase gene ENO2; however, expression of an ENO2 gene lacking one of the ENO2 UAS elements was efficiently repressed by the ENO1 URS element, suggesting that the URS element interferes with the transcriptional activation by some, but not all, UAS elements. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
7 The ENO1 URS element failed to repress transcription of the wild-type yeast enolase gene ENO2; however, expression of an ENO2 gene lacking one of the ENO2 UAS elements was efficiently repressed by the ENO1 URS element, suggesting that the URS element interferes with the transcriptional activation by some, but not all, UAS elements. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
8 The ENO1 URS element failed to repress transcription of the wild-type yeast enolase gene ENO2; however, expression of an ENO2 gene lacking one of the ENO2 UAS elements was efficiently repressed by the ENO1 URS element, suggesting that the URS element interferes with the transcriptional activation by some, but not all, UAS elements. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
9 The ENO1 URS element failed to repress transcription of the wild-type yeast enolase gene ENO2; however, expression of an ENO2 gene lacking one of the ENO2 UAS elements was efficiently repressed by the ENO1 URS element, suggesting that the URS element interferes with the transcriptional activation by some, but not all, UAS elements. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
10 In contrast to the ENO1 gene, the ENO1 URS element repressed CYC1 and ENO2 expression in cells grown on glucose or glycerol plus lactate. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C
11 Evidence is presented that the ENO1 URS element also functions during stationary growth phase. Peptichemio phosphopyruvate hydratase ENO1 Saccharomyces cerevisiae S288C