[1] Quantum Si Inc, Guilford, CT 06437 USA
[2] Univ PSL, ESPCI Paris, CNRS UMR 8231, Lab Biochimie, Paris, France
[3] Rutgers State Univ, Dept Biochem & Mol Biol, Piscataway, NJ 08854 USA
[4] Univ Wollongong, Mol Horizons, Wollongong, NSW 2522, Australia