1. Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322, USA
2. Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, USA
3. MSU–DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824-1322, USA
4. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
5. Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA