Evidence map›Paper›PMID 21278448›Full record

ReviewJournal of molecular cell biology2011

Okazaki fragment maturation: nucleases take centre stage.

Li Zheng, Binghui Shen

Open access · bronzeAbstract readReview
In one paragraph

Review in Journal of molecular cell biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 125 papers.

0numbers the graph read from it
0cells of the map it votes in
125citing papers in PubMed
6.8field-weighted citation impact, top 2% 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

125 citing papers in PubMed, 177 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. PARP1-mediated 5' flap dynamics facilitate Okazaki fragment maturation.bioRxiv : the preprint server for biology · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Research square · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

65 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Li ZhengDepartment of Cancer Biology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA 91010, USA.
Binghui Shen
City Of Hope National Medical Center · US

Funding

Function Analysis of FEN-1 Nuclease in Genome StabilityR01CA073764 · NCI · CITY OF HOPE/BECKMAN RESEARCH INSTITUTE · PI BINGHUI SHEN · 2002 to 2026
$7.9M
Role of Nucleases in RNA Primer Removal and MutagenesisR01CA085344 · NCI · CITY OF HOPE/BECKMAN RESEARCH INSTITUTE · PI SHEN, BINGHUI · 1999 to 2024
$7.7M
NCI NIH HHS R01CA073764NCI NIH HHS R01CA085344
6 · The paper itself

Abstract

Completion of lagging strand DNA synthesis requires processing of up to 50 million Okazaki fragments per cell cycle in mammalian cells. Even in yeast, the Okazaki fragment maturation happens approximately a million times during a single round of DNA replication. Therefore, efficient processing of Okazaki fragments is vital for DNA replication and cell proliferation. During this process, primase-synthesized RNA/DNA primers are removed, and Okazaki fragments are joined into an intact lagging strand DNA. The processing of RNA/DNA primers requires a group of structure-specific nucleases typified by flap endonuclease 1 (FEN1). Here, we summarize the distinct roles of these nucleases in different pathways for removal of RNA/DNA primers. Recent findings reveal that Okazaki fragment maturation is highly coordinated. The dynamic interactions of polymerase δ, FEN1 and DNA ligase I with proliferating cell nuclear antigen allow these enzymes to act sequentially during Okazaki fragment maturation. Such protein-protein interactions may be regulated by post-translational modifications. We also discuss studies using mutant mouse models that suggest two distinct cancer etiological mechanisms arising from defects in different steps of Okazaki fragment maturation. Mutations that affect the efficiency of RNA primer removal may result in accumulation of unligated nicks and DNA double-strand breaks. These DNA strand breaks can cause varying forms of chromosome aberrations, contributing to development of cancer that associates with aneuploidy and gross chromosomal rearrangement. On the other hand, mutations that impair editing out of polymerase α incorporation errors result in cancer displaying a strong mutator phenotype.

Indexed as

AnimalsDeoxyribonucleasesDNADNA Ligase ATPDNA LigasesDNA Polymerase IIIDNA PrimersDNA ReplicationFlap EndonucleasesMiceRNADeoxyribonucleasesDNADNA Ligase ATPDNA LigasesDNA Polymerase IIIDNA PrimersFlap EndonucleasesOkazaki fragmentsRNARNA primers

Identifiers

PMID21278448
PMCPMC3030970
OpenAlexW2150867189

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.