Activation regions in a yeast transposon have homology to mating type control sequences and to mammalian enhancers.


The DNA sequence of the Ty1 activating region from the CYC7-H2 mutant of Saccharomyces cerevisiae is presented. Analysis of the data revealed the presence of four simian virus 40-type enhancer core sequences. Two of the Ty1 enhancer cores are contiguous with sequences also homologous to the diploid control site at MAT alpha. We postulate that these two Ty1… (More)


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