Characterization of Malaysian velogenic NDV strain AF2240-I genomic sequence: a comparative study

Virus Genes. 2013 Jun;46(3):431-40. doi: 10.1007/s11262-012-0874-y. Epub 2013 Jan 10.

Abstract

Newcastle disease virus (NDV) strain AF2240 is a viscerotropic velogenic strain that is used as a vaccine challenge virus in Malaysia. The identification of the full length genome will be a crucial platform for further studies of this isolate. In this study, we fully sequenced the genome of a derivative of this strain named AF2240-I. The 15,192 nt long genome contains a 55-nt leader sequence at the 3' whereas the trailer region consists of 114 nt at the 5'. The intergenic sequences between the NP-P, P-M, M-F, F-HN, and HN-L genes comprise 1, 1, 1, 31, and 47 nt, respectively. The acknowledged cleavage site of fusion protein showed amino acid sequence of 112-R-R-Q-K-R-F-117, which corresponds to those of virulent NDV strains. Phylogenetic analysis of the whole virus genome shows that the strain AF2240-I belongs to genotype VIII and is more closely related to velogenic strains QH1, QH4, Fontana, Largo, and Italienas compared to other strains of NDV. Differences are noticed in the hemagglutinin-neuraminidase (HN) and matrix (M) gene between AF2240 and its derivative AF2240-I. This is the first report of a complete genome sequence of an NDV strain isolated in Malaysia.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions
  • 5' Untranslated Regions
  • Animals
  • Cluster Analysis
  • DNA, Intergenic
  • Genes, Viral
  • Genome, Viral*
  • Malaysia
  • Molecular Sequence Data
  • Newcastle disease virus / genetics*
  • Newcastle disease virus / isolation & purification
  • Phylogeny
  • RNA, Viral / genetics*
  • Sequence Analysis, DNA*
  • Sequence Homology

Substances

  • 3' Untranslated Regions
  • 5' Untranslated Regions
  • DNA, Intergenic
  • RNA, Viral

Associated data

  • GENBANK/JX012096