Evidence map›Paper›PMID 8234319›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Repair by human cell extracts of single (6-4) and cyclobutane thymine-thymine photoproducts in DNA.

D E Szymkowski, C W Lawrence, R D Wood

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.9field-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

33 citing papers in PubMed, 84 citations in OpenAlex.

  1. Dilating the aging clock with light.Innovation (Cambridge (Mass.)) · 2026
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  9. DNA damage tolerance and a web of connections with DNA repair at Yale.The Yale journal of biology and medicine · 2013
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  13. Rapid repair of UVA-induced oxidized purines and persistence of UVB-induced dipyrimidine lesions determine the mutagenicity of sunlight in mouse cells.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2008
    Article
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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

3 authors at 2 institutions in 1 country.

D E SzymkowskiImperial Cancer Research Fund, Clare Hall Laboratories, South Mimms, Herts, United Kingdom.
C W Lawrence
R D Wood
Genesis Foundation · USUniversity of Rochester · US

Funding

NIGMS NIH HHS GM32855
6 · The paper itself

Abstract

One cis-syn cyclobutane thymine dimer or one (6-4) thymine-thymine photoproduct was built into an identical sequence of a closed-circular M13 duplex DNA, and nucleotide excision repair synthesis carried out by human cell extracts in the area containing each lesion was determined. Extracts from normal cells repaired the (6-4) photoproduct with a patch size of approximately 20-30 nucleotides, but repair was at least 10-fold lower at the cyclobutane dimer. The (6-4) lesion was repaired with comparable efficiency to a single acetylamino-fluorene-guanine adduct in a similar location. Extract from nucleotide excision repair-deficient xeroderma pigmentosum group A cells could not remove any of these adducts but could complete repair of the lesions after incision with Escherichia coli UvrABC proteins. This direct comparison of repair of two UV photoproducts, in an in vitro system where chromatin assembly and transcription are absent, suggests that the more rapid repair of the (6-4) lesion observed in the mammalian cell genome overall is due in part to a significant difference in the ability of the repair complex to locate and incise these lesions in DNA.

Indexed as

DNA RepairEscherichia coli ProteinsUltraviolet RaysBacteriophage M13Base SequenceCell LineDNA, CircularDNA DamageDNA, ViralEndodeoxyribonucleasesEscherichia coliHeLa CellsHumansMolecular Sequence DataMutagenesis, InsertionalOligodeoxyribonucleotidesDNA, CircularDNA, ViralEndodeoxyribonucleasesendodeoxyribonuclease uvrABCEscherichia coli ProteinsOligodeoxyribonucleotidesPyrimidine DimersThymine

Identifiers

PMID8234319
PMCPMC47664
OpenAlexW2092535084

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.