1. Laboratory of Molecular Genetics of Microorganisms Oswaldo Cruz Institute, FIOCRUZ Avenida Brasil 4365, Manguinhos Caixa Postal 926, CEP 21040-360 Rio de Janeiro, RJ, Brazil
2. Department of Biochemistry and Molecular Biology Federal University of Paraná Caixa Postal 19046 CEP 81531 980-Curitiba, PR, Brazil