Mre11 Bound to DNA (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Mre11 proteins initiate the repair of double-strand breaks in DNA, either on two ends of broken DNA brought together (synaptic complex at left) or at the site of a collapsed fork in replicating DNA (branching complex at right). The detailed structural information in these models was mostly obtained from protein crystallography of Mre11 dimers bound to DNA. Credit Williams, Tainer et al, Lawrence Berkeley National Laboratory and Scripps Research Institute Usage Restrictions with credit as given License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.