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Zeevi D, et al.  (2011) Compensation for differences in gene copy number among yeast ribosomal proteins is encoded within their promoters. Genome Res 21(12):2114-28

Abstract: Coordinate regulation of ribosomal protein (RP) genes is key for controlling cell growth. In yeast, it is unclear how this regulation achieves the required equimolar amounts of the different RP components, given that some RP genes exist in duplicate copies, while others have only one copy. Here, we tested whether the solution to this challenge is partly encoded within the DNA sequence of the RP promoters, by fusing 110 different RP promoters to a fluorescent gene reporter, allowing us to robustly detect differences in their promoter activities that are as small as ~10%. We found that single-copy RP promoters have significantly higher activities, suggesting that proper RP stoichiometry is indeed partly encoded within the RP promoters. Notably, we also partially uncovered how this regulation is encoded by finding that RP promoters with higher activity have more nucleosome-disfavoring sequences and characteristic spatial organizations of these sequences and of binding sites for key RP regulators. Mutations in these elements result in a significant decrease of RP promoter activity. Thus, our results suggest that intrinsic (DNA-dependent) nucleosome organization may be a key mechanism by which genomes encode biologically meaningful promoter activities. Our approach can readily be applied to uncover how transcriptional programs of other promoters are encoded.

Status: Published Type: Journal Article PubMed ID: 22009988

Topics addressed in this paper

Number of different genes curated to this paper: 18

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Topics Genes linked to topics (#1 - 10 )
FHL1 RAP1 RPL10 RPL13A RPL14B RPL15A RPL3 RPL36B RPL39 RPL41B
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Regulation of blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball
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Topics Genes linked to topics (#11 - 18 )
RPL4A RPL7B RPL8A RPP1B RPS12 RPS20 RPS9A SFP1
Additional Literature blue ball blue ball blue ball blue ball blue ball blue ball blue ball
DNA/RNA Sequence Features blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Function/Process blue ball
Primary Literature blue ball
Regulation of blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Regulatory Role blue ball

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