1. Department
of Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
2. Department
of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
3. Department
of Physiology and Biophysics, Weill Cornell Medical College, New York, New York 10065, United States
4. Departments
of Biological Sciences and Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States