Mre11 U-Shaped Dimer (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Small-angle x-ray scattering confirmed the U-shape of the Mre11 dimer (gray envelope) in solution. Although of lower resolution than crystallography, SAXS was used to establish the orientation of the dimer's components, as shown in ribbon format. 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.