Author Affiliations

K.R. Wilson,^# C.J. Bardeen,^# G.J. Brakenhoff,^#,* A. Buist,^#,* J. Cao,^# S.D. Carpenter,^#,** J. Che,^# J.A. Squier,^# W.S. Warren,^#,† P.M. Weber,^#,‡ and V.V. Yakovlev^#

^#Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0339

^*BioCentrum Amsterdam, Institute for Molecular Cell Biology, Kruislaan 316, 1098 SM Amsterdam, The Netherlands

^**Department of Physics, Brown University, Box 1843, Providence, Rhode Island 02912

^†Princeton University, 121 Frick Laboratory, Washington Rd, and William Street, Princeton, New Jersey 08544-1009

^‡Department of Chemistry, Brown University, Box H, 324 Brook Street, Providence, Rhode Island 02912