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  • Title: Sequence variation in the Newcastle disease virus genome.
    Author: Kattenbelt JA, Stevens MP, Gould AR.
    Journal: Virus Res; 2006 Mar; 116(1-2):168-84. PubMed ID: 16430984.
    Abstract:
    Full-length genome sequences of five virulent and five avirulent strains of Newcastle disease virus isolated between 1998 and 2002 in Victoria and New South Wales, Australia were determined. Comparisons between these strains revealed that coding sequence variability in the haemagglutinin-neuraminidase (HN), matrix (M) and phosphoprotein (P) gene sequences appeared to be more variable than in the fusion (F), nucleocapsid (N) and RNA dependent-RNA replicase (L) genes. Sequence analysis of a number of other isolates made during the recent virulent NDV outbreaks, also identified the presence of a number of variants with altered F gene cleavage sites, which resulted in altered biological properties of those viruses. Quasispecies analysis of a number of field isolates indicated the presence of virulent virus in one particular isolate. Gene sequence analysis of the progenitor virus isolated in 1998 showed very little sequence variation when compared to that of a progenitor-like virus isolated in 2001, demonstrating that in the field, viral genome sequence variation appears to be biologically restricted to that of a consensus sequence.
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