Well done to John Eykelenboom and colleagues from the Lowndes Lab for their recent publication in Cell reports:
ATR activates the S-M checkpoint during unperturbed growth to ensure sufficient replication prior to mitotic onset.
Eykelenboom JK, Harte EC, Canavan L, Pastor-Peidro A, Calvo-Asensio I, Llorens-Agost M, and Lowndes NF