title: Brazilian Flavivirus phylogeny based on NS5.
abstract: In this work, a comprehensive phylogenetic study based on 600 base pair nucleotide and on putative 200 amino acid sequences of NS5 was carried out in order to establish genetic relationships among 15 strains of 10 Brazilian flaviviruses: Bussuquara, Cacipacore, dengue type 1, 2 and 4, Iguape, Ilheus, Rocio, Saint Louis encephalitis (SLE), and yellow fever. Phylogenetic trees were created by neighbor-joining and maximum parsimony methods. These trees showed Brazilian flaviviruses grouped into three main branches: yellow fever branch, dengue branch subdivided in types 1, 2 and 4 branches, and Japanese encephalitis virus (JEV) complex branch including SLE virus strains, Cacipacore, Iguape, Rocio, Ilheus and Bussuquara. Viruses transmitted by Aedes mosquitoes, such as dengue and urban yellow fever, that are also the only Flavivirus causing hemorrhagic fevers in Brazil, were grouped in the same cluster. Encephalitis associated viruses, transmitted by Culex mosquitoes such as JEV complex branch including SLE virus strains, Cacipacore, Iguape, Rocio, Ilheus and Bussuquara were also grouped in the same clade.
authors.affiliation: Unidade Multidepartamental de Pesquisa em Virologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil. flaviagraci@zipmail.com.br
authors.forename: Flúvia Graciela
authors.initials: FG
authors.lastname: Baleotti
authors.forename: Marcos Lázaro
authors.initials: ML
authors.lastname: Moreli
authors.forename: Luiz Tadeu Moraes
authors.initials: LT
authors.lastname: Figueiredo
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D005416:Flavivirus / Q000145:classification / Q000235:genetics*; D006801:Humans; D051379:Mice; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017361:Viral Nonstructural Proteins / Q000032:analysis / Q000235:genetics*
chemical_list: C096041:NS5 protein, flavivirus; D012367:RNA, Viral; D017361:Viral Nonstructural Proteins