Affiliation: | 1 Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, California, United States of America, 2 Department of Pathology, University of California, San Francisco, San Francisco, California, United States of America, 3 Joint Graduate Group in Bioengineering, University of California, Berkeley, and University of California, San Francisco, San Francisco, California, United States of America, 4 Center for Theoretical Biology, Peking University, Beijing, China |