1. Department of Biomedical Sciences, University of Lausanne, 1015 Lausanne, Switzerland
2. SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
3. Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, Illinois 60637, United States
4. Laboratoire International Associé Centre National de la Recherche Scientifique et University of Illinois at Urbana−Champaign, Unité Mixte de Recherche n◦7019, Université de Lorraine, B.P. 70239, 54506 Cedex Vandœuvre-lès-Nancy, France
5. Department of Physics, University of Illinois at Urbana−Champaign, Urbana, Illinois 61820, United States
6. Department of Chemistry, The University of Chicago, 5735 S. Ellis Ave., Chicago, Illinois 60637, United States