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Updated: Jan 20, 2026
Saccharomyces cerevisiae Yeast as a Model Organism
Published on: April 29, 2023
Genome-wide expression analysis of a Saccharomyces cerevisiae strain deleted for the Tup1p-interacting protein Cdc73p
1Max-Delbrück-Laboratorium in der Max-Planck-Gesellschaft, Köln, Germany.
Abstract:
Tuplp is a general corepressor in Saccharomyces cerevisiae. We performed a split-ubiquitin screen with Tup1p as bait, in order to understand how Tuplp mediates repression. Cdc73p was the only component of a holoenzyme of transcription isolated as a Tuplp-interacting protein in this screen. Expression analysis of a strain deleted for CDC73 on a genome-wide scale revealed that Cdc73p is involved in the positive and negative regulation of transcription. Our results show that a subset of genes is regulated by both Cdc73p and Tup1p. Furthermore, our results indicate that Cdc73p plays a role in the repression of telomere-proximal genes, which are not repressed by Tup1p.
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