ArticlePLoS genetics2013
Rtt109 prevents hyper-amplification of ribosomal RNA genes through histone modification in budding yeast.
Article in PLoS genetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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Who cites it
34 citing papers in PubMed, 57 citations in OpenAlex.
- Pathways of rDNA copy number homeostasis in Schizosaccharomyces pombe.G3 (Bethesda, Md.) · 2026Article
- Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes.FEBS letters · 2025Article
- The histone chaperone CAF-1 prevents homologous recombination-mediated instability of the budding yeast ribosomal DNA during replication-coupled DNA double-strand break repair.Nucleic acids research · 2025Article
- rDNA copy number variation affects yeast fitness in response to different environments.Genetics · 2025Article
- Article
- Strategic targeting of Cas9 nickase expands tandem gene arrays.Cell genomics · 2025Article
- Research Progress on the Mechanism and Function of Histone Acetylation Regulating the Interaction between Pathogenic Fungi and Plant Hosts.Journal of fungi (Basel, Switzerland) · 2024Review
- Copy number and sequence variation in rDNA of Daphnia pulex from natural populations: insights from whole-genome sequencing.G3 (Bethesda, Md.) · 2024Article
- Transcription as source of genetic heterogeneity in budding yeast.Yeast (Chichester, England) · 2024Review
- Histone Acetyltransferase Rtt109 Regulates Development, Morphogenesis, and Citrinin Biosynthesis inJournal of fungi (Basel, Switzerland) · 2023Article
- A role for the Saccharomyces cerevisiae Rtt109 histone acetyltransferase in R-loop homeostasis and associated genome instability.Genetics · 2022Article
- Incorporation of a histone mutant with H3K56 site substitution perturbs the replication machinery in mouse embryonic stem cells.Journal of molecular cell biology · 2022Article
- The S-Phase Cyclin Clb5 Promotes rRNA Gene (rDNA) Stability by Maintaining Replication Initiation Efficiency in rDNA.Molecular and cellular biology · 2021Article
- Review
- Gene repression in S. cerevisiae-looking beyond Sir-dependent gene silencing.Current genetics · 2021Review
- The rDNA Loci-Intersections of Replication, Transcription, and Repair Pathways.International journal of molecular sciences · 2021Review
- The CCR4-NOT Complex Maintains Stability and Transcription of rRNA Genes by Repressing Antisense Transcripts.Molecular and cellular biology · 2019Article
- Article
- Ribosomal DNA instability and genome adaptability.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2019Review
- Evolutionary Dynamics of Copy Number and Meiotic Recombination in Murine 5S rDNA: Possible Involvement of Natural Selection.Journal of molecular evolution · 2018Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The genes encoding ribosomal RNA are the most abundant in the eukaryotic genome. They reside in tandem repetitive clusters, in some cases totaling hundreds of copies. Due to their repetitive structure, ribosomal RNA genes (rDNA) are easily lost by recombination events within the repeated cluster. We previously identified a unique gene amplification system driven by unequal sister-chromatid recombination during DNA replication. The system compensates for such copy number losses, thus maintaining proper copy number. Here, through a genome-wide screen for genes regulating rDNA copy number, we found that the rtt109 mutant exhibited a hyper-amplification phenotype (∼3 times greater than the wild-type level). RTT109 encodes an acetyl transferase that acetylates lysine 56 of histone H3 and which functions in replication-coupled nucleosome assembly. Relative to unequal sister-chromatid recombination-based amplification (∼1 copy/cell division), the rate of the hyper-amplification in the rtt109 mutant was extremely high (>100 copies/cell division). Cohesin dissociation that promotes unequal sister-chromatid recombination was not observed in this mutant. During hyper-amplification, production level of extra-chromosomal rDNA circles (ERC) by intra-chromosomal recombination in the rDNA was reduced. Interestingly, during amplification, a plasmid containing an rDNA unit integrated into the rDNA as a tandem array. These results support the idea that tandem DNA arrays are produced and incorporated through rolling-circle-type replication. We propose that, in the rtt109 mutant, rDNA hyper-amplification is caused by uncontrolled rolling-circle-type replication.
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