Evidence map›Paper›PMID 23104055›Full record

ArticleNature structural & molecular biology2012

Mechanism of repair of 5'-topoisomerase II-DNA adducts by mammalian tyrosyl-DNA phosphodiesterase 2.

Matthew J Schellenberg, C Denise Appel, Sanjay Adhikari, Patrick D Robertson, Dale A Ramsden, R Scott Williams

Abstract read
In one paragraph

Article in Nature structural & molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

55 citing papers in PubMed, 76 citations in OpenAlex.

  1. Spinocerebellar ataxia, autosomal recessive type 23 (SCAR23) with compound TDP2 variants: clinical, molecular, and quantitative follow-up.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  16. Molecular mechanisms of topoisomerase 2 DNA-protein crosslink resolution.Cellular and molecular life sciences : CMLS · 2020
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  20. New fluorescence-based high-throughput screening assay for small molecule inhibitors of tyrosyl-DNA phosphodiesterase 2 (TDP2).European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2018
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Matthew J SchellenbergLaboratory of Structural Biology, National Institute of Environmental Health Sciences, US National Institutes of Health, Department of Health and Human Services, North Carolina, USA.
C Denise Appel
Sanjay Adhikari
Patrick D Robertson
Dale A Ramsden
R Scott Williams
National Institute of Environmental Health Sciences · USNational Institutes of Health · USGeorgetown University Medical Center · USUniversity of North Carolina at Chapel Hill · US

Funding

Structural Biology of Genome Maintenance and DNA repairZIAES102765 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI WILLIAMS, ROBERT · 2010 to 2025
$35.2M
Resolution of Complex Breaks by Nonhomologous End JoiningR01CA084442 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RAMSDEN, DALE A · 2000 to 2019
$4.8M
Intramural NIH HHS ZIA ES102765NCI NIH HHS CA 084442NCI NIH HHS R01 CA084442NIEHS NIH HHS 1Z01ES102765-02
6 · The paper itself

Abstract

The topoisomerase II (topo II) DNA incision-and-ligation cycle can be poisoned (for example following treatment with cancer chemotherapeutics) to generate cytotoxic DNA double-strand breaks (DSBs) with topo II covalently conjugated to DNA. Tyrosyl-DNA phosphodiesterase 2 (Tdp2) protects genomic integrity by reversing 5'-phosphotyrosyl-linked topo II-DNA adducts. Here, X-ray structures of mouse Tdp2-DNA complexes reveal that Tdp2 β-2-helix-β DNA damage-binding 'grasp', helical 'cap' and DNA lesion-binding elements fuse to form an elongated protein-DNA conjugate substrate-interaction groove. The Tdp2 DNA-binding surface is highly tailored for engagement of 5'-adducted single-stranded DNA ends and restricts nonspecific endonucleolytic or exonucleolytic processing. Structural, mutational and functional analyses support a single-metal ion catalytic mechanism for the exonuclease-endonuclease-phosphatase (EEP) nuclease superfamily and establish a molecular framework for targeted small-molecule blockade of Tdp2-mediated resistance to anticancer topoisomerase drugs.

Indexed as

DNA AdductsDNA RepairAnimalsCatalysisCrystallography, X-RayDNA Topoisomerases, Type IIMiceModels, MolecularPhosphoric Diester HydrolasesDNA AdductsDNA Topoisomerases, Type IIPhosphoric Diester Hydrolasestyrosyl-DNA phosphodiesterase

Identifiers

PMID23104055
PMCPMC3529160
OpenAlexW2039782374

What OpenQuestion holds

Textmetadata
LicenceTDM
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.