NDLI: Complete genomic characterization of a European type 1 porcine reproductive and respiratory syndrome virus isolate in Korea

Content Provider	Springer Nature Link
Author	Nam, Eeuri Park, Choi Kyu Kim, Seong Hee Joo, Yi Seok Yeo, Sang Geon Lee, Changhee
Copyright Year	2009
Abstract	Porcine reproductive and respiratory syndrome virus (PRRSV) isolates belonging to the European genotype 1 have recently emerged in South Korea, suggesting potential problems for disease control. In the present study, we attempted to determine the complete nucleotide sequence of the first Korean type 1 PRRSV isolate, designated KNU-07. The full-length genome of KNU-07 was found to be 15,038 nucleotides in length, which was 60 nucleotides shorter than the type 1 prototype strain Lelystad due to a notable 60-bp deletion within the nonstructural protein 2 (NSP2). The KNU-07 genome was shown to consist of a 221-nucleotide (nt) 5′ untranslated region (UTR), a 14,703-nt protein-coding region, and a 114-nt 3′ UTR, followed by a 42-73-bp poly(A) tail. A nucleotide sequence comparison of the KNU-07 genome with 20 complete PRRSV genomes revealed a 10.5–13.3% and 39.5–40.3% divergence from type 1 and type 2 strains, respectively, at the genome level, indicating a high similarity to the virus strains commonly identified as the European genotype. In order to investigate genetic variation and to understand the molecular evolution of the type 1 isolate in Korea, extensive phylogenetic analyses were performed using the ORF5 and ORF7 nucleotide sequences of published type 1 PRRSV isolates. The data further indicated that the newly emerging type 1 isolate KNU-07 belongs to the recently proposed pan-European subtype 1. Taken together, the results of this study describe the genomic characterization of the type 1 PRRSV isolated in South Korea, suggesting a recent introduction of the virus typical for this genotype that has commonly appeared worldwide.
Starting Page	629
Ending Page	638
Page Count	10
File Format	PDF
ISSN	03048608
Journal	Archives of Virology
Volume Number	154
Issue Number	4
e-ISSN	14328798
Language	English
Publisher	Springer Vienna
Publisher Date	2009-03-19
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Infectious Diseases Medical Microbiology Virology
Content Type	Text
Resource Type	Article
Subject	Virology Medicine

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