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Related Concept Videos

Proofreading01:31

Proofreading

Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore,  it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme
Proofreading01:43

Proofreading

Synthesis of new DNA molecules starts when DNA polymerase links nucleotides together in a sequence that is complementary to the template DNA strand. DNA polymerase has a higher affinity for the correct base to ensure fidelity in DNA replication. The DNA polymerase furthermore proofreads during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.Errors during Replication Are Corrected by the DNA Polymerase EnzymeGenomic DNA is synthesized in...
DNA Base Pairing02:27

DNA Base Pairing

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
DNA Base Pairing02:27

DNA Base Pairing

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
Mismatch Repair01:36

Mismatch Repair

Overview
Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...

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Related Experiment Video

Updated: Jun 21, 2026

Detection of Homologous Recombination Intermediates via Proximity Ligation and Quantitative PCR in Saccharomyces cerevisiae
07:55

Detection of Homologous Recombination Intermediates via Proximity Ligation and Quantitative PCR in Saccharomyces cerevisiae

Published on: September 11, 2022

Homologue pairing: getting it right.

R Scott Hawley1, William D Gilliland

  • 1Stowers Institute for Medical Research, 1000 East 50th Street, Kansas City, MO 64110, USA. rsh@stowers.org

Nature Cell Biology
|August 4, 2009
PubMed
Summary
This summary is machine-generated.

Specialized chromosome regions and zinc finger (ZnF) proteins mediate homologue pairing in C. elegans. Repeated sequences within these regions recruit ZnF proteins, promoting chromosome pairing and synapsis.

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Last Updated: Jun 21, 2026

Detection of Homologous Recombination Intermediates via Proximity Ligation and Quantitative PCR in Saccharomyces cerevisiae
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Area of Science:

  • Genetics and Molecular Biology
  • Chromosomal organization and dynamics

Background:

  • Homologue pairing is crucial for accurate chromosome segregation.
  • In Caenorhabditis elegans, specific chromosomal regions and zinc finger (ZnF) proteins are known to mediate this process.

Discussion:

  • This study identifies families of repeated sequences enriched in these specialized chromosomal regions.
  • These repeated sequences act as binding sites for cognate ZnF-bearing proteins.

Key Insights:

  • The identified repeated sequences are key regulators of homologue pairing.
  • Recruitment of ZnF proteins by these regions facilitates chromosome pairing and subsequent synapsis.

Outlook:

  • Further research can explore the precise mechanisms of ZnF protein recruitment and interaction.
  • Understanding these pairing mechanisms could offer insights into genome stability and reproductive biology.