Identification of a potential transcriptional regulator encoded by grass carp reovirus

Identification of a potential transcriptional regulator encoded by grass carp reovirus
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草鱼呼肠孤病毒编码的潜在转录调节因子的鉴定

DOI:
10.1007/s00705-019-04204-1
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发表时间:
2019-03
影响因子:
2.7
通讯作者:
Lu Liqun
Lu Liqun
中科院分区:
医学4区
文献类型:
--
作者:
Yu Fei;Wang Hao;Wang Longlong;Li Wanjuan;Lu Liqun

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许多转录因子是由DNA病毒和逆转录病毒编码的,因为它们在宿主细胞中具有基因表达的调节作用。然而,没有在呼肠孤病毒中发现转录调节因子。本文对草鱼呼肠孤病毒基因组片段S7编码的非结构蛋白NS31进行了表征。预计NS31蛋白含有一个螺旋-转-螺旋(HTH)样结构域和一个c端酸性α-螺旋基序。在酵母中,由Gal4-BD结构域和NS31组成的融合蛋白(BD-NS31)能够激活不含Gal4-AD结构域的报告基因(Gal1/ mel1启动子)的表达。我们还发现NS31以bd依赖的方式激活报告基因,并且C端和n端都参与了NS31的激活功能。此外,来自其他水清病毒的NS31同源物也被证明在酵母中具有类似的转录激活功能。因此,水清病毒NS31蛋白似乎作为转录调节蛋白,是呼肠孤病毒科成员中第一个被发现的转录调节蛋白。
Many transcription factors are encoded by DNA viruses and retroviruses due to their regulatory roles in gene expression in the host cell. However, no transcriptional regulator has been identified in any reovirus. Here, a non-structural protein, NS31, encoded by grass carp reovirus genomic segment S7 was characterized. The NS31 protein is predicted to contain a helix-turn-helix (HTH)-like domain and a C-terminal acidic α-helix motif. In yeast, a fusion protein composed of the Gal4-BD domain and NS31 (BD-NS31) was able to activate the expression of reporter genes (Gal1/MEL1promoter) without the Gal4-AD domain. We also found that NS31 activated the reporter genes in a BD-dependent manner, and both the C- and N-termini contribute to the activation function of NS31. Furthermore, NS31 homologues from other aquareoviruses were also shown to possess a similar transcriptional activation function in yeast. Thus, the aquareovirus NS31 protein appears to act as a transcriptional regulatory protein, the first one identified in a member of the familyReoviridae.
Aquareovirus NS80 通过在复制相关的病毒包涵体内保留核心蛋白来启动有效的病毒复制
DOI: 10.1371/journal.pone.0126127
发表时间: 2015
期刊: PloS one
影响因子: 3.7
作者:
Yan L;Zhang J;Guo H;Yan S;Chen Q;Zhang F;Fang Q
通讯作者: Fang Q
Aquareovirus NS80 的 N 末端是与病毒蛋白相互作用和病毒复制所必需的
DOI: 10.1371/journal.pone.0148550
发表时间: 2016
期刊: PloS one
影响因子: 3.7
作者:
Zhang J;Guo H;Chen Q;Zhang F;Fang Q
通讯作者: Fang Q
DOI: 10.1007/978-4-431-68488-6_4
发表时间: 1997-11
影响因子: 5.4
作者:
Naoya Kato;K. Lan;S. Ono‐Nita;Y. Shiratori;Masao Omata
通讯作者: Naoya Kato;K. Lan;S. Ono‐Nita;Y. Shiratori;Masao Omata
DOI: 10.1128/jvi.00617-07
发表时间: 2007-08
影响因子: 5.4
作者:
Xiaojuan Yang;Surendranath Baliji;R. Buchmann;Hui Wang;J. Lindbo;G. Sunter;D. Bisaro
通讯作者: Xiaojuan Yang;Surendranath Baliji;R. Buchmann;Hui Wang;J. Lindbo;G. Sunter;D. Bisaro
草鱼呼肠孤病毒 NS26 与细胞脂多糖诱导的肿瘤坏死因子-α因子 (LITAF) 相互作用
DOI: 10.1007/s11262-016-1370-6
发表时间: 2016-12-01
期刊: VIRUS GENES
影响因子: 1.6
作者:
Lu, Jianfei;Wang, Hao;Lu, Liqun
通讯作者: Lu, Liqun