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Mol Cell Biol. 1986 December; 6(12): 4251-4258

Multiple control elements in the TRP1 promoter of Saccharomyces cerevisiae.

ABSTRACT

The TRP1 promoter generates two groups of mRNAs, transcript I and transcript II. The difference in size between the largest and smallest mRNAs is about 200 base pairs. A series of one-sided and internal deletions were constructed in vitro throughout the TRP1 promoter, and the effect of each deletion on transcription was assessed by Northern blotting. We showed that 395 base pairs of the TRP1 promoter were sufficient for the normal transcription of all RNAs and that the promoter contained two control domains. The control domain for transcript I consisted of one positive element and one negative element, while the control domain for transcript II contained two positive elements. The negative element, mapped between -293 and -318, expression of transcript I. Two regions of transcript I. Two regions (-280 to -236 and -235 to -209) were required for accurate initiation of transcript I. Each region contained sequences homologous to known consensus sequences of the TATA box.

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