[1] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA
[2] Virginia Tech, Ctr Soft Matter & Biol Phys, Blacksburg, VA 24061 USA
[3] Univ Virginia, Sch Med, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22903 USA
[4] Univ Tennessee, Dept Chem, Knoxville, TN 37966 USA
[5] Oak Ridge Natl Lab, Neutron Scattering Div, Large Scale Struct Grp, Oak Ridge, TN 37831 USA
[6] Oak Ridge Natl Lab, Shull Wollan Ctr, Oak Ridge, TN 37831 USA
[7] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA
[8] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[9] Weill Cornell Med Coll, Dept Physiol & Biophys, New York, NY 10065 USA
[10] Weill Cornell Med Coll, Inst Computat Biomed, New York, NY 10065 USA
[11] Univ Arizona, Dept Chem & Biochem, Tucson, AZ 85721 USA
[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA