1. Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
2. Department of Biochemistry, Institute for Genomic Biology, and Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
3. Department of Microbiology, University of Helsinki, Helsinki 00014, Finland