MCM1 binds to a transcriptional control element in Ty1.
Some Ty1 transposable-element insertion mutations of Saccharomyces cerevisiae activate adjacent-gene expression. These Ty1-activated genes are regulated similarly to certain mating genes. This report shows that the MCM1 protein, which binds to several mating genes, also binds to a transcriptional regulatory sequence in Ty1. The binding of MCM1 to Ty1 correlates with the ability of its binding site to function as a component of the Ty1 transcriptional activator. This correlation supports the idea that MCM1 is important for Ty1-activated gene expression. At mating-gene promoters, MCM1 binds with coactivators or repressors such as STE12, alpha 1, or alpha 2. In contrast, MCM1 binds without these associated DNA-binding proteins at its site in Ty1. This finding suggests that its role in Ty1-mediated transcription is different from that at mating genes.
Department of Chemistry, University of North Carolina, Chapel Hill 27599.
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Errede
D001483:Base Sequence; D016384:Consensus Sequence; D004251:DNA Transposable Elements; D004271:DNA, Fungal / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000378:metabolism*; D015966:Gene Expression Regulation, Fungal; D026341:Minichromosome Maintenance 1 Protein; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D014157:Transcription Factors / Q000378:metabolism*; D014158:Transcription, Genetic
D004251:DNA Transposable Elements; D004271:DNA, Fungal; D004268:DNA-Binding Proteins; D026341:Minichromosome Maintenance 1 Protein; D014157:Transcription Factors