1. Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA.
2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA.
3. Division of Molecular Biosciences, Imperial College London, London SW7 2AZ, UK; Department of Material Sciences and Engineering, Polytechnic of Turin, 10129 Turin, Italy.
4. Department of Chemistry, Yale University, New Haven, CT 06520–8107, USA.
5. Department of Chemistry, University of California, Berkeley, and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
6. Biosciences Center, National Renewable Energy Laboratory, Golden, CO 80401, USA.
7. Department of Physics, City College of New York, New York, NY 10031, USA.
8. Division of Biophysics, University of Osnabrück, D-49069 Osnabrück, Germany.
9. Biochemistry and Molecular Biology and DOE-Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, USA.
10. Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720–3102, USA.
11. Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287–1604, USA.
12. Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA.
13. Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139–4307, USA.
14. National Renewable Energy Laboratory, Golden, CO 80401, USA; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA.
15. U.S. Department of Agriculture/Agricultural Research Service, Photosynthesis Research Unit, University of Illinois, Urbana, IL 61801, USA.
16. Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.
17. ExxonMobil Biomedical Sciences, Annandale, NJ 08801, USA.
18. Donald Danforth Plant Science Center, St. Louis, MO 63132, USA.