PEDV ORF3 encodes an ion channel protein and regulates virus production.

PEDV ORF3 encodes an ion channel protein and regulates virus production.
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PEDV ORF3 编码离子通道蛋白并调节病毒产生

DOI:
10.1016/j.febslet.2012.01.005
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发表时间:
2012-02-17
期刊:
影响因子:
3.5
通讯作者:
Sun B
Sun B
中科院分区:
生物学3区
文献类型:
--
作者:
Wang K;Lu W;Chen J;Xie S;Shi H;Hsu H;Yu W;Xu K;Bian C;Fischer WB;Schwarz W;Feng L;Sun B

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猪流行性腹泻病毒(PEDV)开放阅读框3(ORF 3)基因与病毒的感染性和致病性有关,但其功能尚不清楚。在这里,我们提出了一个结构模型的ORF3蛋白组成的四个TM结构域,并形成一个四聚体组装。ORF3蛋白可以在PEDV感染的细胞中检测到,并且它在非洲爪蟾卵母细胞和酵母中作为离子通道发挥作用。突变分析表明,TM4中Tyr170对钾通道活性是重要的。此外,当ORF3基因被siRNA沉默时,病毒在感染的Vero细胞中的产生减少。有趣的是,来自减毒PEDV的ORF 3基因编码具有49个核苷酸缺失的截短蛋白,其缺乏离子通道活性。PEDV 0FR 3蛋白的计算建模。野生型PEDV ORF3蛋白作为离子通道发挥作用并调节病毒的产生。由减毒型PEDV ORF 3编码的截短蛋白显示出较低的通道活性。
Several studies suggest that the open reading frame 3 (ORF3) gene of porcine epidemic diarrhea virus (PEDV) is related to viral infectivity and pathogenicity, but its function remains unknown. Here, we propose a structure model of the ORF3 protein consisting of four TM domains and forming a tetrameric assembly. ORF3 protein can be detected in PEDV‐infected cells and it functions as an ion channel in both Xenopus laevis oocytes and yeast. Mutation analysis showed that Tyr170 in TM4 is important for potassium channel activity. Furthermore, viral production is reduced in infected Vero cells when ORF3 gene is silenced by siRNA. Interestingly, the ORF3 gene from an attenuated PEDV encodes a truncated protein with 49 nucleotide deletions, which lacks the ion channel activity. ► Computational modeling of PEDV OFR3 protein. ► Wild‐type PEDV ORF3 protein functions as an ion channel and regulates virus production. ► The truncated protein encoded by an attenuated‐type PEDV ORF3 shows less channel activity.
病毒通道形成蛋白质 - 对靶标进行建模。
DOI: 10.1016/j.bbamem.2010.05.014
发表时间: 2011-03
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Fischer WB;Hsu HJ
通讯作者: Hsu HJ
病毒蛋白充当离子通道
DOI: 10.1016/j.bbamem.2010.05.006
发表时间: 2011-03
期刊: Biochimica et biophysica acta
影响因子: --
作者:
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DOI: 10.1111/j.1462-5822.2007.01057.x
发表时间: 2008-02-01
影响因子: 3.4
作者:
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DOI: 10.1371/journal.ppat.1000511
发表时间: 2009-07
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影响因子: 6.7
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DOI: 10.1016/j.antiviral.2006.10.008
发表时间: 2007-03
期刊: Antiviral research
影响因子: 7.6
作者:
Akerström S;Mirazimi A;Tan YJ
通讯作者: Tan YJ