[1] Clemson Univ, Dept Phys, Clemson, SC 29634 USA
[2] Cornel Univ, Weill Med Coll, New York, NY USA
[3] Pacific NW Natl Lab, Richland, WA 99352 USA
[4] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-1200 Lisbon, Portugal
[5] Washington Univ, Dept Biochem & Mol Biophys, St Louis, MO USA
[6] Univ Perugia, I-06100 Perugia, Italy
[7] Univ Coll Dublin, Sch Biomol & Biomed Sci, Dublin 2, Ireland
[8] Univ Copenhagen, Dept Chem, DK-1168 Copenhagen, Denmark
[9] Univ Oklahoma, Dept Chem & Biochem, Norman, OK 73019 USA
[10] Univ Manchester, Fac Life Sci, Manchester M13 9PL, Lancs, England
[11] Univ Calif San Diego, San Diego, CA 92103 USA
[12] OpenEye Sci Software Inc, Santa Fe, NM USA