Genetic analysis of a porcine reproductive and respiratory syndrome virus 1 strain in China with new patterns of amino acid deletions in nsp2, GP3 and GP4

被引:13
|
作者
Zhang, Qiaoya [1 ,2 ,3 ]
Song, Zhongbao [4 ]
Yu, Ying [1 ,2 ,3 ]
Huang, Juan [1 ,2 ,3 ]
Jiang, Ping [5 ]
Shan, Hu [1 ,2 ,3 ]
机构
[1] Qingdao Agr Univ, Coll Vet Med, Qingdao 266109, Shandong, Peoples R China
[2] Shandong Prov New Vet Drug Creat Collaborat Innov, Qingdao 266109, Shandong, Peoples R China
[3] Qingdao Vet Biotechnol Engn Res Ctr, Qingdao 266109, Shandong, Peoples R China
[4] Fujian Agr & Forestry Univ, Coll Anim Sci, Key Lab Fujian Taiwan Anim Pathogen Biol, Fuzhou 350002, Fujian, Peoples R China
[5] Nanjing Agr Univ, Coll Vet Med, Key Lab Anim Dis Diagnost & Immunol,Minist Agr, MOE Int Joint Collaborat Res Lab Anim Hlth & Food, Nanjing 210095, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Chinese porcine reproductive and respiratory; syndrome virus 1 (PRRSV 1); Genetic evolution; Amino acid (aa) deletion; Immune cell epitopes; PROTEIN; IDENTIFICATION; REPLICASE; DIVERSITY; EPITOPES; VR-2332; DISEASE; REGIONS;
D O I
10.1016/j.micpath.2020.104531
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Porcine reproductive and respiratory syndrome virus (PRRSV) 1 and PRRSV 2 have coexisted in China for a very long time. In this study, the complete genomic characterization of a PRRSV 1 strain named KZ2018 was conducted. The results showed that it shared 88.6% identity with Lelystad virus and 81.9-90.8% identities with other Chinese PRRSV 1 strains. Further study showed that its nsp2 protein had a unique discontinuous 6-amino acid (aa) deletion (aa357-360+aa411+aa449). Additionally, its GP3 and GP4 contained a long continuous 18-aa deletion in their overlapped region, which has never been described in other Chinese PRRSV 1 isolates. Amino acid analysis of cell epitopes revealed that GP3(245-256) and GP4(57-68) were the most variable epitopes among different Chinese PRRSV 1 isolates. The results might enrich our knowledge of PRRSV 1 strains in China.
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页数:7
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