Modeling of the Ebola virus delta peptide reveals a potential lytic sequence motif.

Modeling of the Ebola virus delta peptide reveals a potential lytic sequence motif.
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DOI:
10.3390/v7010285
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发表时间:
2015-01-20
期刊:
Viruses
影响因子:
--
通讯作者:
Garry RF
Garry RF
中科院分区:
其他
文献类型:
--
作者:
Gallaher WR;Garry RF

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丝状病毒,如埃博拉病毒和马尔堡病毒,导致人类感染的严重爆发,包括2014年西非埃博拉病毒病(EVD)的广泛流行。在检查与2014年埃博拉病毒(EBOV)序列相关的糖蛋白基因突变的过程中,注意到可溶性形式的糖蛋白(sGP)和全长糖蛋白(GP)之间的差异保守性水平,这两者都是由GP基因通过RNA编辑编码的。在RNA编辑位点后编码的蛋白质区域中,与遥远的离群物种Tai Forest埃博拉病毒相比,sGP比GP的重叠区域更保守。组成“δ肽”(sGP的40个氨基酸羧基末端片段)的一半氨基酸在其他广泛不同的物种之间是相同的。在δ肽的羧基端发现了一个富含赖氨酸的两亲性肽基序,该基序与轮状病毒非结构蛋白4(NSP4)的溶细胞肽具有高度的结构相关性。EBOV δ肽是一种候选的病毒孔蛋白,一种阳离子孔形成肽,并且可能有助于EBOV的发病机制。
Filoviruses, such as Ebola and Marburg viruses, cause severe outbreaks of human infection, including the extensive epidemic of Ebola virus disease (EVD) in West Africa in 2014. In the course of examining mutations in the glycoprotein gene associated with 2014 Ebola virus (EBOV) sequences, a differential level of conservation was noted between the soluble form of glycoprotein (sGP) and the full length glycoprotein (GP), which are both encoded by the GP gene via RNA editing. In the region of the proteins encoded after the RNA editing site sGP was more conserved than the overlapping region of GP when compared to a distant outlier species, Tai Forest ebolavirus. Half of the amino acids comprising the “delta peptide”, a 40 amino acid carboxy-terminal fragment of sGP, were identical between otherwise widely divergent species. A lysine-rich amphipathic peptide motif was noted at the carboxyl terminus of delta peptide with high structural relatedness to the cytolytic peptide of the non-structural protein 4 (NSP4) of rotavirus. EBOV delta peptide is a candidate viroporin, a cationic pore-forming peptide, and may contribute to EBOV pathogenesis.
DOI: 10.1056/nejmoa1411100
发表时间: 2014-10-16
期刊: The New England journal of medicine
影响因子: --
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发表时间: 2007-11-20
期刊: VIROLOGY JOURNAL
影响因子: 4.8
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DOI: 10.1126/science.1191714
发表时间: 2010-10-22
期刊: Science (New York, N.Y.)
影响因子: --
作者:
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期刊: Science (New York, N.Y.)
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发表时间: 2013-03-01
影响因子: 5.4
作者:
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