1. Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin−Madison, Madison, Wisconsin 53705, United States
2. Department of Microbiology and Immunology, University of Louisville, Louisville, Kentucky 40202, United States
3. Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
4. Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
5. College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
6. Department of Biological Sciences, University of Alabama in Huntsville, Huntsville, Alabama 35899, United States