ArticleInternational journal of molecular sciences2022
Comparative Analysis of Exo- and Endonuclease Activities of APE1-like Enzymes.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Targeting the APE1 hub: integrating DNA repair and redox signaling for precision management of inflammation-associated diseases.Molecular biology reports · 2026Review
- The Trajectory of Damaged-Base Eversion into the Active Site of Apurinic/Apyrimidinic Endonuclease APE1 Regulates This Enzyme's Substrate Specificity.International journal of molecular sciences · 2024Article
- An Insight into the Mechanism of DNA Cleavage by DNA Endonuclease from the Hyperthermophilic ArchaeonInternational journal of molecular sciences · 2024Article
- Inner Amino Acid Contacts Are Key Factors of Multistage Structural Rearrangements of DNA and Affect Substrate Specificity of Apurinic/Apyrimidinic Endonuclease APE1.International journal of molecular sciences · 2023Article
- Recent advances in therapeutic CRISPR-Cas9 genome editing: mechanisms and applications.Molecular biomedicine · 2023Review
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
Abstract
Apurinic/apyrimidinic (AP)-endonucleases are multifunctional enzymes that are required for cell viability. AP-endonucleases incise DNA 5' to an AP-site; can recognize and process some damaged nucleosides; and possess 3'-phosphodiesterase, 3'-phosphatase, and endoribonuclease activities. To elucidate the mechanism of substrate cleavage in detail, we analyzed the effect of mono- and divalent metal ions on the exo- and endonuclease activities of four homologous APE1-like endonucleases (from an insect (Rrp1), amphibian (xAPE1), fish (zAPE1), and from humans (hAPE1)). It was found that the enzymes had similar patterns of dependence on metal ions' concentrations in terms of AP-endonuclease activity, suggesting that the main biological function (AP-site cleavage) was highly conserved among evolutionarily distant species. The efficiency of the 3'-5' exonuclease activity was the highest in hAPE1 among these enzymes. In contrast, the endoribonuclease activity of the enzymes could be ranked as hAPE1 ≈ zAPE1 ≤ xAPE1 ≤ Rrp1. Taken together, the results revealed that the tested enzymes differed significantly in their capacity for substrate cleavage, even though the most important catalytic and substrate-binding amino acid residues were conserved. It can be concluded that substrate specificity and cleavage efficiency were controlled by factors external to the catalytic site, e.g., the N-terminal domain of these enzymes.
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Registered trials
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