1 The University of Alabama in Huntsville, Department of Biological Sciences, 301 Sparkman Drive, Huntsville, AL 35899, USA. Electronic address: jerome.baudry@uah.edu.
2 Freie Universität Berlin, Department of Physics, Theoretical Molecular Biophysics, Arnimallee 14, D-14195 Berlin, Germany. Electronic address: nbondar@zedat.fu-berlin.de.
3 Soranou Ephessiou, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece. Electronic address: zcournia@bioacademy.gr.
4 Biosciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6309, USA. Electronic address: parksjm@ornl.gov.
5 Biosciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6309, USA. Electronic address: petridisl@ornl.gov.
6 Department of Biochemistry and Molecular Biology, The University of Chicago, 929 E57th Street, Chicago, IL 60637, USA. Electronic address: roux@uchicago.edu.