Molecular and genetic characterization of peste des petits ruminants virus Kurdistan 2011 strain based on the haemagglutinin and fusion protein genes sequences

Peste des petits ruminants (PPR), caused by peste des petits ruminants virus (PPRV), is an emerging and transboundary viral disease of wild and domestic small ruminants. Severe outbreaks of peste des petits ruminants virus (PPRV) occurred during 2011 in wild goats in the Kurdistan region in Iraq. Based on a partial sequence of the nucleoprotein (N) gene the causative virus, named PPRV Kurdistan 2011, was classified as PPRV lineage IV genotype. For further characterization, the ORFs coding for the haemagglutinin (H) and fusion (F) protein of PPRV Kurdistan 2011 were amplified from infected-cell RNA by RT-PCR. Sequencing of the ORFs revealed sizes of 1830 nucleotides (nt) for the H-ORF and 1641 nt for the F-ORF. Comparative sequence analysis performed for the entire H- and F- ORFs of Kurdistan 2011 with respective sequences of PPRV isolates showed the highest homology with PPRV lineage IV isolates which is also reflected by comparative amino acid analysis. Phylogenetic analysis performed based on the partial and complete nucleotide sequences of both H- and F-ORFs clustered Kurdistan 2011 within PPRV lineage IV genotype.



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