1. Molecular Biology of Pathogens Laboratory, Biotechnology Center, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
2. Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, USA
3. Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, Missouri, USA
4. Department of Computer Science and Engineering, Washington University, St. Louis, Missouri, USA
5. Department of Genetics, Washington University, St. Louis, Missouri, USA
6. Department of Molecular Biology and Biotechnology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil