Molecular characterization of M1146, an American isolate of Ljungan virus (LV) reveals the presence of a new LV genotype

1 Department of Chemistry and Biomedical Sciences, University of Kalmar, S-391 82 Kalmar, Sweden 2 Nya Apodemus, Grevgatan 38, S-114 53 Stockholm, Sweden 3 University of Texas Medical Branch, Department of Pathology, Centre for Tropical Diseases, Galveston, USA 4 Picornaviral Research Unit, Discipli...

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Veröffentlicht in:Journal of general virology 2003-04, Vol.84 (4), p.837-844
Hauptverfasser: Johansson, E. Susanne, Niklasson, Bo, Tesh, Robert B, Shafren, Darren R, Travassos da Rosa, Amelia P. A, Lindberg, A. Michael
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Sprache:eng
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Zusammenfassung:1 Department of Chemistry and Biomedical Sciences, University of Kalmar, S-391 82 Kalmar, Sweden 2 Nya Apodemus, Grevgatan 38, S-114 53 Stockholm, Sweden 3 University of Texas Medical Branch, Department of Pathology, Centre for Tropical Diseases, Galveston, USA 4 Picornaviral Research Unit, Discipline of Immunology and Microbiology, Faculty of Medical Sciences, The University of Newcastle, David Maddison Clinical Sciences Building, Royal Newcastle Hospital, Newcastle, 2300 New South Wales, Australia Correspondence Michael Lindberg michael.lindberg{at}hik.se Ljungan virus (LV) is a suspected human pathogen recently isolated from bank voles in Sweden. This study describes the genetic characterization of a virus, M1146, which was isolated in 1962 from another vole species ( Microtus montanus ), trapped in Oregon, USA. Based on antigenic properties, M1146 was postulated previously as a putative member of the family Picornaviridae . The near complete genomic sequence verifies that M1146 is a member of the Picornaviridae , most closely related to LVs isolated in Sweden. The strain M1146 possesses typical LV genomic organization, including a cluster of two 2A homologues. There are significant differences throughout the capsid protein region, while the non-structural region of M1146 is closely related to the Swedish LV genomes. Genetic and phylogenetic analyses show that M1146 represents a new genotype within the distinct LV cluster. Isolation of LV from both Swedish and American voles trapped over a period of 30 years suggests a continuous worldwide presence. The GenBank accession number of the sequence reported in this paper is AF538689 .
ISSN:0022-1317
1465-2099
DOI:10.1099/vir.0.18792-0