Molecular characterization of the nucleocapsid protein gene of Newcastle disease virus strains in Japan and development of a restriction enzyme-based rapid identifying method

Molecular characterization of the nucleocapsid protein gene of Newcastle disease virus strains in... Nucleocapsid protein (NP) gene of Newcastle disease virus (NDV) strains mainly isolated in Japan from 1930 to 2001 was genetically characterized. By deduced amino acid sequence comparison, the N-terminal region (from 1 to 401 residues) of the NP protein was found to be highly conserved, while the C-terminal region was highly variable among the NDV isolates. A phylogenetic tree construct based on the nucleotide sequence of the complete NP gene revealed that the old (prior to 1970s) and the new (after 1980s) isolates could be classified into two major different groups, i.e., a group comprising virulent strains, and another group composed of avirulent strains. By restriction enzyme analysis using Pst I, none of the virulent strains were cleaved, while avirulent strains were cleaved. The results may be useful for simple primary screening test for differentiating NDV isolates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Molecular characterization of the nucleocapsid protein gene of Newcastle disease virus strains in Japan and development of a restriction enzyme-based rapid identifying method

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Publisher
Springer-Verlag
Copyright
Copyright © 2004 by Springer-Verlag/Wien
Subject
LifeSciences
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-004-0309-8
Publisher site
See Article on Publisher Site

Abstract

Nucleocapsid protein (NP) gene of Newcastle disease virus (NDV) strains mainly isolated in Japan from 1930 to 2001 was genetically characterized. By deduced amino acid sequence comparison, the N-terminal region (from 1 to 401 residues) of the NP protein was found to be highly conserved, while the C-terminal region was highly variable among the NDV isolates. A phylogenetic tree construct based on the nucleotide sequence of the complete NP gene revealed that the old (prior to 1970s) and the new (after 1980s) isolates could be classified into two major different groups, i.e., a group comprising virulent strains, and another group composed of avirulent strains. By restriction enzyme analysis using Pst I, none of the virulent strains were cleaved, while avirulent strains were cleaved. The results may be useful for simple primary screening test for differentiating NDV isolates.

Journal

Archives of VirologySpringer Journals

Published: Aug 1, 2004

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