Evidence map›Paper›PMID 8265344›Full record

ArticleNucleic acids research1993

Enzymic removal of 5-methylcytosine from DNA by a human DNA-glycosylase.

M Vairapandi, N J Duker

Abstract read
In one paragraph

Article in Nucleic acids research, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Epigenetic regulation in pluripotent stem cells: a key to breaking the epigenetic barrier.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2013
    Review
  11. Article
  12. Review
  13. Article
  14. Role of the Arabidopsis DNA glycosylase/lyase ROS1 in active DNA demethylation.Proceedings of the National Academy of Sciences of the United States of America · 2006
    Article
  15. Article
  16. Article
  17. An unexpectedly high excision capacity for mispaired 5-hydroxymethyluracil in human cell extracts.Proceedings of the National Academy of Sciences of the United States of America · 2000
    Article
  18. Article
  19. Article
  20. DNA methylation is a reversible biological signal.Proceedings of the National Academy of Sciences of the United States of America · 1999
    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

2 authors.

M VairapandiDepartment of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, PA 19140.
N J Duker

Funding

NIA NIH HHS AG-00378
6 · The paper itself

Abstract

DNA 5-methylcytosine is a major factor in the silencing of mammalian genes; it is involved in gene expression, differentiation, embryogenesis and neoplastic transformation. A decrease in DNA 5-methylcytosine content is associated with activation of specific genes. There is much evidence indicating this to be an enzymic process, with replacement of 5-methylcytosine by cytosine. We demonstrate here enzymic release of 5-methylcytosines from DNA by a human 5-methylcytosine-DNA glycosylase activity, which affords a possible mechanism for such replacement. This activity generates promutagenic apyrimidinic sites, which can be related to the high frequency of mutations found at DNA 5-methylcytosine loci. The recovery of most released pyrimidines as thymines indicates subsequent deamination of free 5-methylcytosines by a 5-methylcytosine deaminase activity. This prevents possible recycling of 5-methylcytosine into replicative DNA synthesis via a possible 5-methyl-dCTP intermediate synthesized through the pyrimidine salvage pathway. Taken together, these findings indicate mechanisms for removal of 5-methylcytosines from DNA, hypermutability of DNA 5-methylcytosine sites, and exclusion of 5-methylcytosines from DNA during replication.

Indexed as

5-MethylcytosineCell NucleusCytosineDNADNA GlycosylasesHeLa CellsHumansIn Vitro TechniquesN-Glycosyl Hydrolases5-MethylcytosineCytosineDNADNA GlycosylasesN-Glycosyl Hydrolases

Identifiers

PMID8265344
PMCPMC310565

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.