1. Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, GA 30322, USA
2. Department of Biochemistry, Emory University School of Medicine, 1510 Clifton Rd., Atlanta, GA 30322, USA
3. Emory Antibiotic Resistance Center, Emory University School of Medicine, 1510 Clifton Rd., Atlanta, GA 30322, USA