Evidence map›Paper›PMID 9705522›Full record

ArticleNucleic acids research1998

NGG-triplet repeats form similar intrastrand structures: implications for the triplet expansion diseases.

K Usdin

Abstract read
In one paragraph

Article in Nucleic acids research, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
–field-weighted citation impact
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

29 citing papers in PubMed.

  1. Predicting Single-Stranded DNA Oligonucleotides 3D Structures: An Open Issue.Computational and structural biotechnology journal · 2026
    Article
  2. Article
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  4. Article
  5. Article
  6. Article
  7. Article
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  9. Repeat-associated non-AUG translation and its impact in neurodegenerative disease.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2014
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Replication fork stalling at natural impediments.Microbiology and molecular biology reviews : MMBR · 2007
    Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article
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

1 author.

K UsdinSection on Genomic Structure and Function, Laboratory of Molecular and Cellular Biology, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0830, USA. ku@helix.nih.gov

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tandem repeats of certain trinucleotides show extensive intergenerational instability in humans that is associated with a class of genetic disorders known as the Triplet Expansion Diseases. This instability is thought to be a consequence of the formation of intrastrand structures, including hairpins, triplexes and tetraplexes, by the tandem repeats. I show here that CGG-repeats which are associated with this group of diseases, and AGG- and TGG-repeats which are not currently known to be, form several intrastrand structures including tetraplexes. In all cases the tetraplexes have the same overall conformation in which all the G residues are involved in G4-tetrads. CGG-repeats also form stable hairpins, but AGG- and TGG-repeats do not form hairpins of comparable stability. However, since tetraplexes can be thought of as folded hairpins, many of the properties ascribed to disease-associated triplets that form hairpins, may apply to these sequences as well. The fact that AGG- and TGG-repeats are not currently associated with any triplet expansion disease suggests either that the ability to adopt an intrastrand folded structure is not sufficient for expansion, or that other diseases associated with such triplets might remain to be identified.

Indexed as

Trinucleotide RepeatsBase SequenceDNAHumansModels, MolecularMolecular Sequence DataNervous System DiseasesNeuromuscular DiseasesNucleic Acid ConformationPotassiumTrinucleotide Repeat ExpansionDNAPotassium

Identifiers

PMID9705522
PMCPMC147794

What OpenQuestion holds

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Registered trials

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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.