[1] Yale Univ, Dept Mol Cellular & Develop Biol, New Haven, CT USA
[2] Yale Univ, Dept Mol Biophys, New Haven, CT USA
[3] Yale Univ, Dept Biochem & Cell Bio, New Haven, CT USA
[4] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA
[5] Ohio State Univ, Dept Mol Genet, Columbus, OH 43210 USA
[6] Ohio State Univ, Dept Mol & Cellular Biochem, Columbus, OH 43210 USA
[7] Columbia Univ, Dept Chem Engn, New York, NY USA