Chemicals and Drugs

Flap Endonucleases

Endonucleases that remove 5' DNA sequences from a DNA structure called a DNA flap. The DNA flap structure occurs in double-stranded DNA containing a single-stranded break where the 5' portion of the downstream strand is too long and overlaps the 3' end of the upstream strand. Flap endonucleases cleave the downstream strand of the overlap flap structure precisely after the first base-paired nucleotide, creating a ligatable nick.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Endonucleases that remove 5' DNA sequences from a DNA structure called a DNA flap. The DNA flap structure occurs in double-stranded DNA containing a single-stranded break where the 5' portion of the downstream strand is too long and overlaps the 3' end of the upstream strand. Flap endonucleases cleave the downstream strand of the overlap flap structure precisely after the first base-paired nucleotide, creating a ligatable nick.

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Classification

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Synonyms

13 entry terms
  • Flap Endonuclease
  • Endonuclease, Flap
  • Endonucleases, Flap
  • FEN-1
  • Fen1 Protein
  • Flap Endonuclease-1
  • RAD2 Homolog-1 Nuclease
  • RTH-1 Nuclease
  • Endonuclease-1, Flap
  • Flap Endonuclease 1
  • Nuclease, RTH-1
  • RAD2 Homolog 1 Nuclease
  • RTH 1 Nuclease

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Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

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History Note

2004; use FLAP ENDONUCLEASES (NM) 1994-2003; for FEN1 PROTEIN use EXODEOXYRIBONUCLEASE V 1997-2003; for RTH-1 NUCLEASE use EXODEOXYRIBONUCLEASE V 1996-2003

MeSH Record

Previous Indexing

  • Endodeoxyribonucleases (1994-2003)

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References

  1. National Library of Medicine. Flap Endonucleases. Medical Subject Headings (MeSH). 2026. Unique ID D045585. http://id.nlm.nih.gov/mesh/2026/D045585
  2. Flap Endonucleases. In: Wikipedia. https://en.wikipedia.org/wiki/Flap_endonuclease
  3. Flap Endonucleases. In: Wikidata. https://www.wikidata.org/wiki/Q54462031