Evidence map›Paper›PMID 41091836›Full record

ArticlePLoS genetics2025

Stn1 supports Mec1 function in protecting stalled replication forks from degradation.

Erika Casari, Flavio Corallo, Luca Edoardo Milani, Renata Tisi, Maria Pia Longhese

Abstract read
In one paragraph

Article in PLoS genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Erika CasariDipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Milano, Italy.ORCID https://orcid.org/0000-0002-4096-714X
Flavio CoralloDipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Milano, Italy.ORCID https://orcid.org/0009-0005-6057-3016
Luca Edoardo MilaniDipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Milano, Italy.ORCID https://orcid.org/0009-0008-7465-9787
Renata TisiDipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Milano, Italy.
Maria Pia LongheseDipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Milano, Italy.ORCID https://orcid.org/0000-0003-1726-2034

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Replication stress threatens genome integrity by exposing replication forks to nucleolytic degradation. In both yeast and humans, the checkpoint kinases Mec1 and Rad53 limit deleterious single-stranded DNA (ssDNA), yet the protective mechanisms remain incompletely defined. Here, we identify a role for the CST subunit Stn1 in cooperating with Mec1 to restrain ssDNA formation under nucleotide depletion. A gain-of-function allele (stn1-L60F) suppresses the sensitivity to replication stress of Mec1-deficient cells and reduces ssDNA at stalled replication forks, whereas a loss-of-function truncation (stn1-ΔC) exacerbates both phenotypes. Mechanistically, Stn1 opposes the resection activities of Mre11, Exo1, and Sgs1 by promoting Polα-primase-dependent fill-in and by limiting their association with stalled replication forks, with the latter mechanism predominating in the suppression exerted by Stn1L60F. Thus, Stn1 works with the checkpoint to curb nuclease activity at sites of replication stress.

Indexed as

DNA ReplicationIntracellular Signaling Peptides and ProteinsProtein Serine-Threonine KinasesSaccharomyces cerevisiae ProteinsCell Cycle ProteinsCheckpoint Kinase 2DNA-Binding ProteinsDNA RepairDNA, Single-StrandedEndodeoxyribonucleasesExodeoxyribonucleasesHumansRecQ HelicasesSaccharomyces cerevisiaeCell Cycle ProteinsCheckpoint Kinase 2DNA-Binding ProteinsDNA, Single-StrandedEndodeoxyribonucleasesexodeoxyribonuclease IExodeoxyribonucleasesIntracellular Signaling Peptides and ProteinsMEC1 protein, S cerevisiaeMRE11 protein, S cerevisiaeProtein Serine-Threonine KinasesRAD53 protein, S cerevisiaeRecQ HelicasesSaccharomyces cerevisiae ProteinsSGS1 protein, S cerevisiae

Identifiers

PMID41091836
PMCPMC12548912

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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.