1. Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, Department of Biological Chemistry, David Geffen School of Medicine and Molecular Biology Institute, University of California, Los Angeles, California 90095-1569, Department of Mechanical and Aerospace Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, California 90095-1597, and Biomedical Engineering Interdepartmental Program, University of...