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Complete genome sequence of an avian paramyxovirus type 4 from north america reveals a shorter genome and new genotype.

ABSTRACT: An avian paramyxovirus type 4 (APMV-4) was isolated from a duck in Delaware in 2010. Its genome is 15,048 nucleotides (nt) long, which is shorter by 6 nt than those for all previously reported strains. Phylogenetic analysis revealed that this strain formed a separate cluster within APMV-4 strains.

SUBMITTER: Parthiban M

PROVIDER: S-EPMC3569320 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature

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Complete genome sequence of an avian paramyxovirus type 4 from north america reveals a shorter genome and new genotype.

Parthiban Manoharan M Kaliyaperumal Manimaran M Xiao Sa S Nayak Baibaswata B Paldurai Anandan A Kim Shin-Hee SH Ladman Brian S BS Preskenis Lauren A LA Gelb Jack J Collins Peter L PL Samal Siba K SK

Genome announcements 20130131 1

An avian paramyxovirus type 4 (APMV-4) was isolated from a duck in Delaware in 2010. Its genome is 15,048 nucleotides (nt) long, which is shorter by 6 nt than those for all previously reported strains. Phylogenetic analysis revealed that this strain formed a separate cluster within APMV-4 strains. ...[more]

PMID: 23405329

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Project description:BackgroundAvian paramyxoviruses (APMV) consist of nine known serotypes. The genomes of representatives of all APMV serotypes except APMV type 5 have recently been fully sequenced. Here, we report the complete genome sequence of the APMV-5 prototype strain budgerigar/Kunitachi/74.Methodology/principal findingsAPMV-5 Kunitachi virus is unusual in that it lacks a virion hemagglutinin and does not grow in the allantoic cavity of embryonated chicken eggs. However, the virus grew in the amniotic cavity of embryonated chicken eggs and in twelve different established cell lines and two primary cell cultures. The genome is 17,262 nucleotides (nt) long, which is the longest among members of genus Avulavirus, and encodes six non-overlapping genes in the order of 3'N-P/V/W-M-F-HN-L-5' with intergenic regions of 4-57 nt. The genome length follows the 'rule of six' and contains a 55-nt leader sequence at the 3'end and a 552 nt trailer sequence at the 5' end. The phosphoprotein (P) gene contains a conserved RNA editing site and is predicted to encode P, V, and W proteins. The cleavage site of the F protein (G-K-R-K-K-R downward arrowF) conforms to the cleavage site motif of the ubiquitous cellular protease furin. Consistent with this, exogenous protease was not required for virus replication in vitro. However, the intracerebral pathogenicity index of APMV-5 strain Kunitachi in one-day-old chicks was found to be zero, indicating that the virus is avirulent for chickens despite the presence of a polybasic F cleavage site.Conclusions/significancePhylogenetic analysis of the sequences of the APVM-5 genome and proteins versus those of the other APMV serotypes showed that APMV-5 is more closely related to APMV-6 than to the other APMVs. Furthermore, these comparisons provided evidence of extensive genome-wide divergence that supports the classification of the APMVs into nine separate serotypes. The structure of the F cleavage site does not appear to be a reliable indicator of virulence among APMV serotypes 2-9. The availability of sequence information for all known APMV serotypes will facilitate studies in epidemiology and vaccinology.

Dataset Information

Complete genome sequence of an avian paramyxovirus type 4 from north america reveals a shorter genome and new genotype.

Publications

Complete genome sequence of an avian paramyxovirus type 4 from north america reveals a shorter genome and new genotype.

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