机构:
Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94143 USA
Lawrence Berkeley Natl Lab, Div Mol Biophys & Integrated Bioimaging, Berkeley, CA USA
Stanford Synchrotron Radiat Lab, SLAC, Struct Mol Biol Grp, Stanford, CA 94309 USAUniv Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94143 USA