Cells have evolved careful checks to ensure DNA is copied only once, but how they switch on replication at the right moment ...

For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event ...

In turn, this slowed new DNA synthesis at replication forks, structures in which double strands of DNA separate to begin the copying process. The cells' attempt to restart the stalled replication fork ...

Researchers at The University of Texas Medical Branch (UTMB) have identified how a key enzyme called ATR protects DNA from breaking when cells copy damaged genetic material, a discovery that could ...