1. Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
2. Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
3. Department of Medical Microbiology and Immunology, University of Wisconsin—Madison, Madison, Wisconsin, USA
4. Department of Pediatrics, University of Wisconsin—Madison, Madison, Wisconsin, USA
5. Department of Chemistry, Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, California, USA
6. Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin, USA