Cited by 23DNA Repair MechanismsCancer-related Molecular PathwaysProtein Kinase Regulation and GTPase Signaling

The human ATR-mediated DNA damage checkpoint in a reconstituted system

Choi, Jun-Hyuk, Sancar, Aziz, Lindsey-Boltz, Laura A.·2009·Methods

Abstract

DNA damage checkpoints are signal transduction pathways that coordinate the cell cycle with other cellular responses to DNA damage in order to maintain genomic integrity. The ATR kinase is responsible for initiating the DNA damage checkpoint in response to UV-damaged DNA and incompletely replicated DNA. We have recently established an in vitro system that recapitulates most but not all features of the human ATR-mediated DNA damage checkpoint response. With this system we have shown that damaged DNA can be a direct signal for ATR activation, and that TopBP1 specifically stimulates ATR in the presence of damaged DNA under physiological ionic strength conditions. This system provides a powerful tool to gain insight into the molecular mechanism of the ATR pathway. Here we describe preparation of the checkpoint components and our specific kinase assay in more detail.

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Crossref · 10.1016/j.ymeth.2009.02.006

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Authors
Choi, J.-H., Sancar, A., & Lindsey-Boltz, L. A.
Affiliations
University of North Carolina at Chapel Hill (US)
Venue
Methods
Publisher
Elsevier BV
Published
2009-05
Volume
48
Issue
1
Pages
3-7
ISSN
1046-2023 (ISSN-L)
OpenAlex
W2058564277
Cited by
23
References
30
Citations by year
2024: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 4 · 2013: 3 · 2012: 2
FWCI
1.61
Type
journal article
Language
en
Open access
closed
Locations
  • Methods (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (R01GM032833)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
ATR kinase, DNA damage checkpoint, TopBP1, UV-induced DNA damage, in vitro reconstitution, DNA damage signaling, kinase activity assay, cell cycle checkpoints, genome stability
MeSH terms
Checkpoint Kinase 1, Carrier Proteins, Cell-Free System, DNA, DNA Damage, DNA-Binding Proteins, Glutathione Transferase, HeLa Cells, Histidine, Humans, Models, Biological, Molecular Weight, Nuclear Proteins, Osmolar Concentration, Phosphorylation, Protein Binding, Protein Kinases, Recombinant Proteins, Substrate Specificity, Silver Staining, Protein Serine-Threonine Kinases, Protein Structure, Tertiary, Cell Cycle Proteins, Amino Acid Motifs, Adaptor Proteins, Signal Transducing, Ataxia Telangiectasia Mutated Proteins

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