Perfect Symmetry (image) Arizona State University Share Print E-Mail Caption Using X-ray light at the Advanced Light Source in Berkeley, CA, and a beamline at Advanced Photon Source at Argonne National Lab, IL., Fromme's group has now visualized the heliobacteria reaction centers for the very first time at near-atomic, 2.2-angstrom resolution (an angstrom is the width of a hydrogen atom). They found an almost perfect symmetry in the heliobacter RC (shown by the mirror image pattern of the main protein motifs, indicated by cylinders (top image) and a close up of the exact placement of individual reaction center atoms (bottom). Credit ASU Usage Restrictions None Share Print E-Mail 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.