1. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
2. Department
of Anatomy, University of California, San
Francisco, California 94143, United States
3. Howard Hughes Medical Institute, Department of Chemistry,
and Biophysics Graduate Group, University of California, Berkeley, California 94720, United States, and Physical Biosciences
and Materials Sciences Divisions, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Medicine, Division
of Rheumatology, Howard Hughes Medical Institute, University of California, San Francisco, California 94143, United
States
5. Departments of Chemical
Engineering, Chemistry, and Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,
United States, and Ragon Institute of MGH, MIT, and Harvard, Charlestown, Massachusetts 02129, United States