Abstract
The ATR-Claspin-Chk1 pathway is critical for turning on the cellular response to DNA damage and replication stress. Five recent reports uncover new mechanisms controlling the recovery phase of the checkpoint response, and introduce crucial roles for Claspin, Rad17 phosphorylation and the ubiquitin proteasome pathway in Chk1 signaling.
MeSH terms
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Adaptor Proteins, Signal Transducing
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Animals
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Cell Cycle
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Cell Cycle Proteins / metabolism
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Cell Line
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Checkpoint Kinase 1
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DNA Damage*
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DNA Repair / physiology*
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Phosphorylation
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Proteasome Endopeptidase Complex / metabolism
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Protein Kinases / metabolism
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Protein Serine-Threonine Kinases / metabolism
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Signal Transduction*
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Ubiquitin / metabolism
Substances
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Adaptor Proteins, Signal Transducing
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Cell Cycle Proteins
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Ubiquitin
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Protein Kinases
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Checkpoint Kinase 1
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Protein Serine-Threonine Kinases
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Proteasome Endopeptidase Complex