Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Homologous Recombination02:31

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
Single-Strand DNA Binding Proteins01:03

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
Fixing Double-strand Breaks02:04

Fixing Double-strand Breaks

The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Controlling scissors during DNA repair of UV light-induced damage.

The Journal of cell biology·2026
Same author

Engineering quantum dot surfaces to preserve protein-DNA interactions for single-molecule visualization.

Nano convergence·2026
Same author

The interaction of XPG with TFIIH through p62 and XPD is required for the completion of nucleotide excision repair.

Nucleic acids research·2026
Same author

Molecular basis of DNA cross-linking by bacteria.

Science (New York, N.Y.)·2025
Same author

Proteomic discovery of DEK and NUMA1 as new players in UV-induced DNA damage repair mechanisms.

Cell death discovery·2025
Same author

RNF4 and USP7 coordinate spatial regulation of SLX4 stability within the PML nuclear bodies.

Nucleic acids research·2025

Related Experiment Video

Updated: Jul 10, 2026

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
10:59

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage

Published on: August 21, 2021

Achieving broad substrate specificity in damage recognition by binding accessible nondamaged DNA.

Orlando D Schärer1

  • 1Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11974-3400, USA. orlando@pharm.stonybrook.edu

Molecular Cell
|October 30, 2007
PubMed
Summary

The Rad4/Rad23 protein structure explains how eukaryotic cells recognize DNA damage during nucleotide excision repair. It functions by sensing undamaged DNA next to the damaged site.

More Related Videos

Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair
10:59

Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair

Published on: May 24, 2017

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites
09:39

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites

Published on: August 2, 2024

Related Experiment Videos

Last Updated: Jul 10, 2026

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
10:59

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage

Published on: August 21, 2021

Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair
10:59

Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair

Published on: May 24, 2017

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites
09:39

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites

Published on: August 2, 2024

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • Eukaryotic nucleotide excision repair (NER) is a crucial DNA repair pathway.
  • Understanding the mechanism of DNA damage recognition is essential for comprehending NER.

Purpose of the Study:

  • To elucidate the structural basis of DNA damage recognition by the Rad4/Rad23 complex in eukaryotic NER.

Main Methods:

  • X-ray crystallography was used to determine the structure of the Rad4/Rad23 protein complex.

Main Results:

  • The determined structure reveals how the Rad4/Rad23 complex recognizes structurally diverse DNA lesions.
  • The mechanism involves probing accessible, non-damaged DNA adjacent to the lesion.

Conclusions:

  • The Rad4/Rad23 structure provides key insights into the initial damage recognition step of eukaryotic NER.
  • This recognition mechanism highlights a unique strategy for detecting DNA damage.