[1] Univ Illinois, Dept Phys, Ctr Phys Living Cells, Urbana, IL USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Univ Illinois, Ctr Biophys & Computat Biol, Urbana, IL USA
[4] Rockefeller Univ, Lab Virol & Infect Dis, Ctr Study Hepatitis C, New York, NY 10021 USA
[5] Howard Hughes Med Inst, Urbana, IL USA