A 28-bp segment of the Saccharomyces cerevisiae PHO5 upstream activator sequence confers phosphate control to the CYC1-lacZ gene fusion

Two regions within the Saccharomyces cerevisiae PHO5 upstream activator sequence (UAS) are involved in phosphate dependent transcription activation [Rudolph and Hinnen, Proc. Natl. Acad. Sci. USA 84 (1987) 1340–1344]. In experiments carried out in vivo we showed that one of these can compensate for...

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Veröffentlicht in:Gene 1988-07, Vol.67 (2), p.223-228
Hauptverfasser: Sengstag, Christian, Hinnen, Albert
Format: Artikel
Sprache:eng
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Zusammenfassung:Two regions within the Saccharomyces cerevisiae PHO5 upstream activator sequence (UAS) are involved in phosphate dependent transcription activation [Rudolph and Hinnen, Proc. Natl. Acad. Sci. USA 84 (1987) 1340–1344]. In experiments carried out in vivo we showed that one of these can compensate for the CYC1 UAS and expresses the heterologous CYC1-lacZ gene in response to phosphate starvation. A 28-bp segment is very efficient in gene activation, and a 19-bp subsegment that corresponds to the UASp consensus sequence brings about a weak but still detectable activation. As was observed with other UAS, gene activation is obtained with either orientation of the element, and tandem copies yield double lacZ activity compared to a single copy. No gene activation is observed in a pho4 and in a pho2 mutant. Absence of PHO2 reduces the basal expression ofCYC7.
ISSN:0378-1119
1879-0038
DOI:10.1016/0378-1119(88)90399-X