Identification of novel amino acid residues of influenza virus PA-X that are important for PA-X shutoff activity by using yeast.

Identification of novel amino acid residues of influenza virus PA-X that are important for PA-X shutoff activity by using yeast.
复制标题

DOI:
10.1016/j.virol.2018.01.004
复制
发表时间:
2018-03
期刊:
影响因子:
3.7
通讯作者:
Kawaoka Y
Kawaoka Y
中科院分区:
医学3区
文献类型:
--
作者:
Oishi K;Yamayoshi S;Kawaoka Y

文献摘要

参考文献

被引文献

相似文献

甲型流感病毒蛋白PA-X包含N-末端PA区和C-末端PA-X特异性区。PA-X通过mRNA切割抑制宿主基因表达,称为关闭。尽管已知PA-X的N-末端PA区域中的核酸内切酶活性位点和C-末端PA-X特异性区域中的碱性氨基酸对于PA-X关闭活性是重要的,但其他氨基酸也可能起作用。在这里,我们使用酵母来鉴定PA-X的新氨基酸,这些氨基酸对PA-X关闭活性很重要。与野生型PA-X不同,大多数PA-X突变体主要定位在细胞质中,表明这些突变通过影响PA-X向细胞核的转运来降低PA-X的关闭活性。PA的N-末端结构上的确定的氨基酸的映射显示,其中一些可能有助于形成的PA的核酸内切酶活性位点。
The influenza A virus protein PA-X comprises an N-terminal PA region and a C-terminal PA-X-specific region. PA-X suppresses host gene expression, termed shutoff, via mRNA cleavage. Although the endonuclease active site in the N-terminal PA region of PA-X and basic amino acids in the C-terminal PA-X-specific region are known to be important for PA-X shutoff activity, other amino acids may also play a role. Here, we used yeast to identify novel amino acids of PA-X that are important for PA-X shutoff activity. Unlike wild-type PA-X, most PA-X mutants predominantly localized in the cytoplasm, indicating that these mutations decreased the shutoff activity of PA-X by affecting PA-X translocation to the nucleus. Mapping of the identified amino acids onto the N-terminal structure of PA revealed that some of them likely contribute to the formation of the endonuclease active site of PA.
DOI: 10.1016/s1097-2765(00)80099-4
发表时间: 1998-06-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
Nemeroff, ME;Barabino, SML;Krug, RM
通讯作者: Krug, RM
DOI: 10.1128/jvi.00319-15
发表时间: 2015-06-01
影响因子: 5.4
作者:
Hayashi, Tsuyoshi;MacDonald, Leslie A.;Takimoto, Toru
通讯作者: Takimoto, Toru
DOI: 10.1128/jvi.00954-16
发表时间: 2016-08-01
影响因子: 5.4
作者:
Hayashi, Tsuyoshi;Chaimayo, Chutikarn;Takimoto, Toru
通讯作者: Takimoto, Toru
DOI: 10.1371/journal.ppat.1005427
发表时间: 2016-02
期刊: PLoS pathogens
影响因子: 6.7
作者:
Khaperskyy DA;Schmaling S;Larkins-Ford J;McCormick C;Gaglia MM
通讯作者: Gaglia MM
DOI: 10.1038/nature07745
发表时间: 2009-04-16
期刊: NATURE
影响因子: 64.8
作者:
Dias, Alexandre;Bouvier, Denis;Ruigrok, Rob W. H.
通讯作者: Ruigrok, Rob W. H.