1. Department of Chemistry Emory University 1515 Dickey Drive Atlanta GA 30322 USA
2. Paul Scherrer Institut 5232 Villigen, PSI Switzerland
3. X-ray Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
4. Center for Cellular Imaging and NanoAnalytics Biozentrum University of Basel 4058 Basel Switzerland
5. Leiden Institute of Biology Sylviusweg 72 2333 BE Leiden The Netherlands