1. Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
2. Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003-9298, United States
3. Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, Massachusetts 01003-9298, United States
4. Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Pará 66075-110, Brazil