1. Department of Chemistry
and Biochemistry, Utah State University, Logan, Utah 84322, United States
2. Department
of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
3. Intel Corporation, Hillsboro, Oregon 97124, United States
4. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
5. Pacific Northwestern National Laboratory, Richland, Washington 99352, United States