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Virology. 1992 Sep;190(1):469-74.

Constant and variable regions of measles virus proteins encoded by the nucleocapsid and phosphoprotein genes derived from lytic and persistent viruses.

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Institute of Virology, University of W├╝rzburg, Germany.


The nucleotide sequences of the N and P genes of two wild type measles virus strains JM and CM in two distinct lineages of the virus have been analyzed and compared with those of other MV strains in order to assess which parts of the internal proteins are variable. Most variations in the P protein appear to occur in the N-terminus, while the middle part of the protein (residues 201-350) and the C-terminus are conserved. The C protein varies primarily in its N-terminal amino acids. The C-terminal amino acid residues of the V protein, which are unique to this protein, do not vary significantly between measles virus strains. The data show that evolutionary trees determined on the basis of the N, P, or M genes are the same and that probably no recombination has taken place between these genes in the strains investigated so far. The M protein appears to be less variable than the other genes and thus changes observed in this gene in some SSPE and MIBE viruses may be of greater significance than were assumed earlier.

[Indexed for MEDLINE]

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