title: Nucleotide sequences and taxonomy of satsuma dwarf virus.
abstract: The nucleotide sequences of genomic RNA1 (6795 nt) and RNA2 (5345 nt) of satsuma dwarf virus (SDV), a tentative member of the genus Nepovirus, were determined. The deduced genome organization of SDV showed similarities to the organization in como-, faba- and nepoviruses. There is extensive amino acid sequence similarity in the N-terminal regions of the proteins encoded by RNA1 and RNA2, as reported previously only for tomato ringspot nepovirus. However, unlike definitive nepoviruses, which have a single coat protein, SDV has two coat proteins. SDV RNA2 does not contain the long (> 1300 nt) 3' non-coding region characteristic of some nepoviruses. Phylogenetic analysis of SDV RNA polymerase placed SDV apart from como-, faba- and nepoviruses. These unique features suggest that SDV is distinct from the Comovirus, Fabavirus and Nepovirus genera, and needs to be separated into a new genus, probably within the family Comoviridae.
authors: T
authors: T
authors: Iwanami
authors: Y
authors: Y
authors: Kondo
authors: A V
authors: AV
authors: Karasev
mesh_terms: D000595:Amino Acid Sequence; D002213:Capsid / Q000032:analysis / Q000737:chemistry / Q000235:genetics; D002957:Citrus / Q000821:virology*; D017124:Conserved Sequence / Q000235:genetics; D012321:DNA-Directed RNA Polymerases / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D005814:Genes, Viral / Q000235:genetics; D016679:Genome, Viral; D008969:Molecular Sequence Data; D016366:Open Reading Frames / Q000235:genetics; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D019180:Secoviridae / Q000737:chemistry / Q000145:classification / Q000235:genetics*; D016415:Sequence Alignment; D017423:Sequence Analysis, RNA
chemical_list: D012367:RNA, Viral; D012321:DNA-Directed RNA Polymerases