G2/M DNA damage checkpoint

Stable Identifier
R-HSA-69473
Type
Pathway
Species
Homo sapiens
ReviewStatus
5/5
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Throughout the cell cycle, the genome is constantly monitored for damage, resulting either from errors of replication, by-products of metabolism or through extrinsic sources such as ultra-violet or ionizing radiation. The different DNA damage checkpoints act to inhibit or maintain the inhibition of the relevant CDK that will control the next cell cycle transition. The G2 DNA damage checkpoint prevents mitotic entry solely through T14Y15 phosphorylation of Cdc2 (Cdk1). Failure of the G2 DNA damage checkpoint leads to catastrophic attempts to segregate unrepaired chromosomes.
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