PMID: 20654235Jul 27, 2010Paper

Molecular characteristics of the full-length genome of two new Japanese encephalitis virus isolated from mosquitoes in Hubei province

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]
Hong-Yue JiangGuo-Dong Liang

Abstract

To sequence and analyze the complete genome of two new Japanese encephalitis virus (JEV) strains isolated from mosquitoes collected in Hubei province in 2008, and to understand the molecular biological characteristics of JEV in this area. RT-PCR was used to amplify the fragments of HBZG08-09 strain and HBZG08-55 strain with 16 pairs overlapping primers after they had been recovered and identified, then the full-length genome was obtained by sequencing and splicing. Biological sequence alignment, nucleotide and amino acid sequence analysis, phylogenetic analysis and analysis of amino acid differences were performed by the software of Clustal X (1.83), MegAlign, Mega (4.0) and Genedoc (3.2). The genome of two new strains were both 10 965 nucleotides in length with a single open reading frame from 96 to 10 392 coding for a 3432 amino acid poly-protein, the homology of nucleotide and amino acid sequence between two isolates were 98.2% and 99.7% respectively. Further study showed that the new strains were both belonging to genotype I. Two new strains were most closely related to isolates obtained from Henan and Zhejiang province in recent years. Compared with the live attenuated vaccine strain SA-14-14-2 in China, HBZG08-09 strain h...Continue Reading

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