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Cited by 273

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Cloning and characterization of a functional human homolog of Escherichia coli endonuclease III

Open access
Aspinwall, Richard, Rothwell, Dominic G., Roldan-Arjona, Teresa, Anselmino, Catherine, Ward, Christopher J., Cheadle, Jeremy P., Sampson, Julian R., Lindahl, Tomas, Harris, Peter C., Hickson, Ian D.·1997·Proceedings of the National Academy of Sciences

Abstract

Repair of oxidative damage to DNA bases is essential to prevent mutations and cell death. Endonuclease III is the major DNA glycosylase activity in Escherichia coli that catalyzes the excision of pyrimidines damaged by ring opening or ring saturation, and it also possesses an associated lyase activity that incises the DNA backbone adjacent to apurinic/apyrimidinic sites. During analysis of the area adjacent to the human tuberous sclerosis gene ( TSC2 ) in chromosome region 16p13.3, we identified a gene, OCTS3 , that encodes a 1-kb transcript. Analysis of OCTS3 cDNA clones revealed an open reading frame encoding a predicted protein of 34.3 kDa that shares extensive sequence similarity with E. coli endonuclease III and a related enzyme from Schizosaccharomyces pombe , including a conserved active site region and an iron/sulfur domain. The product of the OCTS3 gene was therefore designated hNTH1 (human endonuclease III homolog 1). The hNTH1 protein was overexpressed in E. coli and purified to apparent homogeneity. The recombinant protein had spectral properties indicative of the presence of an iron/sulfur cluster, and exhibited DNA glycosylase activity on double-stranded polydeoxyribonucleotides containing urea and thymine glycol residues, as well as an apurinic/apyrimidinic lyase activity. Our data indicate that hNTH1 is a structural and functional homolog of E. coli endonuclease III, and that this class of enzymes, for repair of oxidatively damaged pyrimidines in DNA, is highly conserved in evolution from microorganisms to human cells.

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Metadata

Authors
Aspinwall, R., Rothwell, D. G., Roldan-Arjona, T., Anselmino, C., Ward, C. J., Cheadle, J. P., Sampson, J. R., Lindahl, T., Harris, P. C., & Hickson, I. D.
Venue
Proceedings of the National Academy of Sciences
Published
1997-01-07
Volume
94
Issue
1
Pages
109-114
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2023256344
Cited by
273
References
34
FWCI
7.99
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Cloning and characterization of a functional human homolog of Escherichia coli endonuclease III. https://app.cochat.ai/papers/10.1073/pnas.94.1.109
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Aspinwall, R., Rothwell, D. G., Roldan-Arjona, T., Anselmino, C., Ward, C. J., Cheadle, J. P., Sampson, J. R., Lindahl, T., Harris, P. C., & Hickson, I. D. (1997). Cloning and characterization of a functional human homolog of Escherichia coli endonuclease III. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.94.1.109

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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