Access

Letter

Nature Cell Biology 6, 648–655 (1 July 2004) | doi:10.1038/ncb1145

ATR and ATM regulate the timing of DNA replication origin firing

David Shechter , Vincenzo Costanzo & Jean Gautier

Timing of DNA replication initiation is dependent on S-phase-promoting kinase (SPK) activity at discrete origins and the simultaneous function of many replicons. DNA damage prevents origin firing through the ATM- and ATR-dependent inhibition of Cdk2 and Cdc7 SPKs.