›› 2012, Vol. 39 ›› Issue (4): 60-63.

• 生物技术 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒蛋白质研究进展

付云云1, 单悦1, 郎广平1, 郭敏1, 白雪1, 梅林1, 温涛1,2, 杨举1, 罗胜军4, 邢海云1, 梁志选3, 赵建增1,2, 高英杰1   

  1. 1. 吉林大学畜牧兽医学院,吉林长春 130062;2. 华威特(北京)生物科技有限公司,北京 100085;3. 天津市动物疫病预防控制中心,天津 300402;4. 广东省农业科学院兽医研究所,广东广州 510640
  • 收稿日期:1900-01-01 修回日期:2011-10-10 出版日期:2012-04-20 发布日期:2012-04-20
  • 通讯作者: 赵建增, 梁志选

Research Progress on the Protein of PRRSV

FU Yun-yun, SHAN Yue, LANG Guang-ping, GUO Min, BAI Xue, MEI Lin, WEN Tao, YANG Ju, LUO Sheng-jun, XING Hai-yun, LIANG Zhi-xuan, ZHAO Jian-zeng, GAO Ying-jie   

  1. 1. College of Animal Science and Veterinary Medicine,Jilin University, Changchun 130062, China;2. Beijing Sinovet Biotech Co.Ltd., Beijing 100085, China;3. Tianjin Animal Diseases Control Center, Tianjin 300402, China;4. Institute of Veterinary Medicine, Guangdong Academy of Agricultural Science, Guangzhou 510640, China
  • Received:1900-01-01 Revised:2011-10-10 Online:2012-04-20 Published:2012-04-20

摘要: 猪繁殖与呼吸综合征病毒(PRRSV)是一种折叠的正义RNA病毒,属于动脉炎病毒科(Arteriviridae),尼多病毒目(Nidovirales)。除了动脉炎病毒科,尼多病毒目还包括冠状病毒科(Coronaviruses)。15.1~15.2 kb长的PRRSV基因组通过互相重叠的开放性阅读框编码蛋白质。ORF1a翻译过程中产生pp1a多聚蛋白。ORF1b表达产生了 pp1ab多聚蛋白。pp1a和pp1ab经病毒蛋白酶处理后又生成了14个非结构蛋白。一些非结构蛋白为蛋白酶(NSP1、NSP1β、NSP2和NSP4)、RNA-依赖性RNA聚合酶(NSP9)、解旋酶(NSP10)和核酸内切酶(NSP11)。ORFs2-5编码GP2-GP5,ORF6编码M,ORF7编码N蛋白。ORF2b完全包括在ORF2内,表达小的非糖基化E或2b蛋白。相当一部分的囊膜蛋白是nidoviruses所特有的,所有的结构蛋白都是感染所必需的。

关键词: PRRSV; 蛋白质; 囊膜蛋白

Abstract: Porcine reproductive and respiratory syndrome virus is an enveloped, positive-sense RNA virus, which belongs to the family Arteriviridae, order Nidovirales. Besides the Arteriviridae, Nidovirales always includes the Coronaviruses. The 15.1~15.2 kb PRRSV genome code the proteins through some open reading frames (ORFs), and the ORFs tend to overlap one another. Translation of ORF1a produces pp1a polyprotein, and the formation of pp1ab polyprotein is led by the expression of ORF1b. The pp1a and pp1ab polyproteins release fourteen non-structural proteins after processed by viral proteases. Some of the non-structural proteins are proteases (NSP1, NSP1β, NSP2 and NSP4), RNA-dependent RNA polymerase (NSP9), helicase(NSP10) and endonuclease(NSP11). ORFs2-5, ORF6 and ORF7 encode GP2-5, M and N, respectively. ORF2b is enclosed within ORF2 fully and express small, non-glycosylated E or 2b protein. A portion of envelope protein belongs to nidoviruses particularly, and all the structural proteins is necessary for infection.

Key words: PRRSV; protein; envelope protein

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