1 The Verna and Marrs McLean Department of Biochemistry, Baylor College of Medicine, Houston, Texas, USA.
2 Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, USA.
3 Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA.
4 Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Heidelberg, Germany.
5 Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA.
6 The Eskitis Drug Discovery Institute, N27, Griffith University, Nathan, Australia.
7 Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, Wellcome Trust/MRC Building, Hills Road, Cambridge, United Kingdom.
8 Photon Science, SLAC and Structural Biology, School of Medicine, Stanford University, Menlo Park, USA.