Institution: | (1) Howard Hughes Medical Institute and Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, CA 94143-2200, USA;(2) Division of Biology, Section of Molecular Biology, University of California at San Diego, La Jolla, CA 92093-0366, USA;(3) Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA |