Evidence map›Paper›PMID 19541632›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

The glucanosyltransferase Gas1 functions in transcriptional silencing.

Melissa R Koch, Lorraine Pillus

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

21 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
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  4. GPI-anchored Gas1 protein regulates cytosolic proteostasis in yeast.bioRxiv : the preprint server for biology · 2023
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  15. Review
  16. Palmitoylation controls the dynamics of budding-yeast heterochromatin via the telomere-binding protein Rif1.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  17. Article
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  20. Fueling transcriptional silencing with Gas1.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Melissa R KochSection of Molecular Biology, Division of Biological Sciences, UCSD Moores Cancer Center, University of California at San Diego, La Jolla, CA 92093-0347, USA.
Lorraine Pillus
Moores Cancer Center

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transcriptional silencing is a crucial process that is mediated through chromatin structure. The histone deacetylase Sir2 silences genomic regions that include telomeres, ribosomal DNA (rDNA) and the cryptic mating-type loci. Here, we report an unsuspected role for the enzyme Gas1 in locus-specific transcriptional silencing. GAS1 encodes a beta-1,3-glucanosyltransferase previously characterized for its role in cell wall biogenesis. In gas1 mutants, telomeric silencing is defective and rDNA silencing is enhanced. We show that the catalytic activity of Gas1 is required for normal silencing, and that Gas1's role in silencing is distinct from its role in cell wall biogenesis. Established hallmarks of silent chromatin, such as Sir2 and Sir3 binding, H4K16 deacetylation, and H3K56 deacetylation, appear unaffected in gas1 mutants. Thus, another event required for telomeric silencing must be influenced by GAS1. Because the catalytic activity of Gas1 is required for telomeric silencing, Gas1 localizes to the nuclear periphery, and Gas1 and Sir2 physically interact, we propose a model in which carbohydrate modification of chromatin components provides a new regulatory element that may be critical for chromatin function but which is virtually unexplored in the current landscape of chromatin analysis.

Indexed as

Gene SilencingTranscription, GeneticCell WallChromatinDNA, RibosomalGene DeletionGenes, FungalGlucan Endo-1,3-beta-D-GlucosidaseHistone DeacetylasesMembrane GlycoproteinsProtein BindingSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSilent Information Regulator Proteins, Saccharomyces cerevisiaeSirtuin 2SirtuinsChromatinDNA, RibosomalGAS1 protein, S cerevisiaeGlucan Endo-1,3-beta-D-GlucosidaseHistone DeacetylasesMembrane GlycoproteinsSaccharomyces cerevisiae ProteinsSilent Information Regulator Proteins, Saccharomyces cerevisiaeSIR2 protein, S cerevisiaeSirtuin 2Sirtuins

Identifiers

PMID19541632
PMCPMC2708717
OpenAlexW2139142895

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.