[1] Harvard Univ, Fac Arts, Mol & Cellular Biol, Cambridge, MA 02138 USA
[2] Harvard Univ, Sci Ctr Syst Biol, Cambridge, MA 02138 USA
[3] Indiana Univ, Dept Mol & Cellular Biochem, Bloomington, IN 47405 USA
[4] Delft Univ Technol, Kavli Inst Nanosci Delft, Dept Bionanosci, Delft, Netherlands
[5] Newcastle Univ, Inst Cell & Mol Biosci, Ctr Bacterial Cell Biol, Newcastle Upon Tyne NE2 4AX, Tyne & Wear, England
[6] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
[7] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
[8] Harvard Med Sch, Dept Genet, Boston, MA 02115 USA
[9] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA