Evidence map›Paper›PMID 14517285›Full record

ArticleMolecular and cellular biology2003

Molecular basis for expression of common and rare fragile sites.

Eitan Zlotorynski, Ayelet Rahat, Jennifer Skaug, Neta Ben-Porat, Efrat Ozeri, Ruth Hershberg, Ayala Levi, Stephen W Scherer, Hanah Margalit, Batsheva Kerem

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In one paragraph

Article in Molecular and cellular biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed
4.8field-weighted citation impact, top 5% 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

127 citing papers in PubMed, 233 citations in OpenAlex.

  1. Review
  2. Article
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  11. Replication of [AT/TA]bioRxiv : the preprint server for biology · 2023
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  12. Article
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  14. Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. Article
  20. Review

67 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

10 authors at 2 institutions in 2 countries.

Eitan ZlotorynskiDepartment of Genetics, The Life Sciences Institute, The Hebrew University, Jerusalem, Israel 91904.
Ayelet Rahat
Jennifer Skaug
Neta Ben-Porat
Efrat Ozeri
Ruth Hershberg
Ayala Levi
Stephen W Scherer
Hanah Margalit
Batsheva Kerem
Hebrew University of Jerusalem · ILHospital for Sick Children · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fragile sites are specific loci that form gaps, constrictions, and breaks on chromosomes exposed to partial replication stress and are rearranged in tumors. Fragile sites are classified as rare or common, depending on their induction and frequency within the population. The molecular basis of rare fragile sites is associated with expanded repeats capable of adopting unusual non-B DNA structures that can perturb DNA replication. The molecular basis of common fragile sites was unknown. Fragile sites from R-bands are enriched in flexible sequences relative to nonfragile regions from the same chromosomal bands. Here we cloned FRA7E, a common fragile site mapped to a G-band, and revealed a significant difference between its flexibility and that of nonfragile regions mapped to G-bands, similar to the pattern found in R-bands. Thus, in the entire genome, flexible sequences might play a role in the mechanism of fragility. The flexible sequences are composed of interrupted runs of AT-dinucleotides, which have the potential to form secondary structures and hence can affect replication. These sequences show similarity to the AT-rich minisatellite repeats that underlie the fragility of the rare fragile sites FRA16B and FRA10B. We further demonstrate that the normal alleles of FRA16B and FRA10B span the same genomic regions as the common fragile sites FRA16C and FRA10E. Our results suggest that a shared molecular basis, conferred by sequences with a potential to form secondary structures that can perturb replication, may underlie the fragility of rare fragile sites harboring AT-rich minisatellite repeats and aphidicolin-induced common fragile sites.

Indexed as

Chromosome FragilityAllelesAntiviral AgentsBase SequenceBromodeoxyuridineCell Line, TransformedChromosome BandingChromosome MappingCytogeneticsDatabases, GeneticDistamycinsDNAFibroblastsGenomeHumansIn Situ Hybridization, FluorescenceAntiviral AgentsBromodeoxyuridineDistamycinsDNAstallimycin

Identifiers

PMID14517285
PMCPMC230307
OpenAlexW2108742137

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.