Evidence map›Paper›PMID 16157682›Full record

ArticleGenetics2005

The Clr7 and Clr8 directionality factors and the Pcu4 cullin mediate heterochromatin formation in the fission yeast Schizosaccharomyces pombe.

Geneviève Thon, Klavs R Hansen, Susagna Padrissa Altes, Deepak Sidhu, Gurjeet Singh, Janne Verhein-Hansen, Michael J Bonaduce, Amar J S Klar

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

75 citing papers in PubMed, 117 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Clr4Nature communications · 2024
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Rex1BD and the 14-3-3 protein control heterochromatin organization at tandem repeats by linking RNAi and HDAC.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  13. Article
  14. Review
  15. The Fission Yeast Mating-Type Switching Motto: "One-for-Two" and "Two-for-One".Microbiology and molecular biology reviews : MMBR · 2023
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. The Evolutionary Significance of RNAi in the Fungal Kingdom.International journal of molecular sciences · 2020
    Review

15 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Geneviève ThonDepartment of Genetics, Institute of Molecular Biology and Physiology, University of Copenhagen, Øster Farimasgade 2A, DK-1353 Copenhagen K, Denmark. gen@my.molbio.ku.dk
Klavs R Hansen
Susagna Padrissa Altes
Deepak Sidhu
Gurjeet Singh
Janne Verhein-Hansen
Michael J Bonaduce
Amar J S Klar
University of Copenhagen · DKNational Cancer Institute · USFrederick National Laboratory for Cancer Research · US

Funding

Intramural NIH HHS
6 · The paper itself

Abstract

Fission yeast heterochromatin is formed at centromeres, telomeres, and in the mating-type region where it mediates the transcriptional silencing of the mat2-P and mat3-M donor loci and the directionality of mating-type switching. We conducted a genetic screen for directionality mutants. This screen revealed the essential role of two previously uncharacterized factors, Clr7 and Clr8, in heterochromatin formation. Clr7 and Clr8 are required for localization of the Swi6 chromodomain protein and for histone H3 lysine 9 methylation, thereby influencing not only mating-type switching but also transcriptional silencing in all previously characterized heterochromatic regions, chromosome segregation, and meiotic recombination in the mating-type region. We present evidence for physical interactions between Clr7 and the mating-type region and between Clr7 and the S. pombe cullin Pcu4, indicating that a complex containing these proteins mediates an early step in heterochromatin formation and implying a role for ubiquitination at this early stage prior to the action of the Clr4 histone methyl-transferase. Like Clr7 and Clr8, Pcu4 is required for histone H3 lysine 9 methylation, and bidirectional centromeric transcripts that are normally processed into siRNA by the RNAi machinery in wild-type cells are easily detected in cells lacking Clr7, Clr8, or Pcu4. Another physical interaction, between the nucleoporin Nup189 and Clr8, suggests that Clr8 might be involved in tethering heterochromatic regions to the nuclear envelope by association with the nuclear-pore complex.

Indexed as

Blotting, SouthernChromatin ImmunoprecipitationCloning, MolecularCullin ProteinsDNA PrimersGene SilencingGenes, Mating Type, FungalHeterochromatinMicroscopy, FluorescenceReverse Transcriptase Polymerase Chain ReactionSchizosaccharomycesSchizosaccharomyces pombe ProteinsTwo-Hybrid System TechniquesClr8 protein, S pombeCullin ProteinsDNA PrimersHeterochromatinPcu4 protein, S pombeRaf2 protein, S pombeSchizosaccharomyces pombe Proteins

Identifiers

PMID16157682
PMCPMC1456086
OpenAlexW2128320997

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.