1. Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089, United States
2. Molecular and Computational Biology, Department of Biological Sciences, University of Southern California, Los Angeles, California 90089, United States
3. Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California 90095, United States
4. Section of Infection and Immunity, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California 90089, United States