1. Department
of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, United States
2. Department
of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, United States
3. Frank
Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
4. Institute
of Complex Systems (ICS), ICS-6: Structural Biochemistry, Research Centre Jülich, Jülich, Germany