ArticleMolecular and cellular biology2016
Evolution and Functional Trajectory of Sir1 in Gene Silencing.
Article in Molecular and cellular biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed, 11 citations in OpenAlex.
- Yeast heterochromatin stably silences only weak regulatory elements by altering burst duration.Cell reports · 2024Article
- Yeast Heterochromatin Only Stably Silences Weak Regulatory Elements by Altering Burst Duration.bioRxiv : the preprint server for biology · 2023Article
- Article
- Conservation of a DNA Replication Motif among Phylogenetically Distant Budding Yeast Species.Genome biology and evolution · 2021Article
- Evolution of DNA replication origin specification and gene silencing mechanisms.Nature communications · 2020Article
- Interplay of Chimeric Mating-Type Loci Impairs Fertility Rescue and Accounts for Intra-Strain Variability inFrontiers in genetics · 2019Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
We used the budding yeasts Saccharomyces cerevisiae and Torulaspora delbrueckii to examine the evolution of Sir-based silencing, focusing on Sir1, silencers, the molecular topography of silenced chromatin, and the roles of SIR and RNA interference (RNAi) genes in T. delbrueckii. Chromatin immunoprecipitation followed by deep sequencing (ChIP-Seq) analysis of Sir proteins in T. delbrueckii revealed a different topography of chromatin at the HML and HMR loci than was observed in S. cerevisiae. S. cerevisiae Sir1, enriched at the silencers of HMLα and HMR A: , was absent from telomeres and did not repress subtelomeric genes. In contrast to S. cerevisiae SIR1's partially dispensable role in silencing, the T. delbrueckii SIR1 paralog KOS3 was essential for silencing. KOS3 was also found at telomeres with T. delbrueckii Sir2 (Td-Sir2) and Td-Sir4 and repressed subtelomeric genes. Silencer mapping in T. delbrueckii revealed single silencers at HML and HMR, bound by Td-Kos3, Td-Sir2, and Td-Sir4. The KOS3 gene mapped near HMR, and its expression was regulated by Sir-based silencing, providing feedback regulation of a silencing protein by silencing. In contrast to the prominent role of Sir proteins in silencing, T. delbrueckii RNAi genes AGO1 and DCR1 did not function in heterochromatin formation. These results highlighted the shifting role of silencing genes and the diverse chromatin architectures underlying heterochromatin.
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