1. Department of Chemical
and Biomolecular
Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
2. Department
of Biological Chemistry
and Molecular Pharmacology, Harvard Medical School, 200 Longwood Ave, Boston, Massachusetts 02115, United States
3. Department of Chemistry and
Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095,
United States