PARylation is reversible and is undone by PAR erasers such as poly ADP-ribose glycohydrolase (PARG). This serves two main functions. First, it allows PARP proteins to maintain functionality by ...

DNA damage and repair refers to the creation and correction of DNA lesions that threaten genome integrity. Because DNA replication errors or environmental agents that damage DNA can introduce ...

While most known types of DNA damage are fixed by our cells' in-house DNA repair mechanisms, some forms of DNA damage evade repair and can persist for many years, new research shows. This means ...

Normal metabolic activity produces reactive oxygen species (ROS) that, if not eliminated, can damage cellular components. As a result, ROS from overactive mitochondria are frequently cited as a source ...

"Sunburn damages the DNA, leading to cell death and inflammation. So the textbooks say. But in this study we were surprised to learn that this is a result of damage to the RNA, not the DNA that ...