Mechanistic understanding of N-glycosylation in Ebola virus glycoprotein maturation and function
Mechanistic understanding of N-glycosylation in Ebola virus glycoprotein maturation and function
复制标题
埃博拉病毒糖蛋白成熟和功能中 N-糖基化的机制理解
DOI:
10.1074/jbc.m116.768168
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发表时间:
2017-02
影响因子:
4.8
通讯作者:
Yong-Hui Zheng
中科院分区:
文献类型:
--
作者:
Bin Wang;Yujie Wang;Dylan Frubutt;Xihe Zhang;Xiaoyu Yao;Dan Hu;Zhuo Zhang;Chaonan Liu;Shimin Zheng;Shi-Hua Xiang;Yong-Hui Zheng
The Ebola virus (EBOV) trimeric envelope glycoprotein (GP) precursors are cleaved into the receptor-binding GP1 and the fusion-mediating GP2 subunits and incorporated into virions to initiate infection. GP1 and GP2 form heterodimers that have 15 or two N-glycosylation sites (NGSs), respectively. Here we investigated the mechanism of how N-glycosylation contributes to GP expression, maturation, and function. As reported before, we found that, although GP1 NGSs are not critical, the two GP2 NGSs, Asn563 and Asn618, are essential for GP function. Further analysis uncovered that Asn563 and Asn618 regulate GP processing, demannosylation, oligomerization, and conformation. Consequently, these two NGSs are required for GP incorporation into EBOV-like particles and HIV type 1 (HIV-1) pseudovirions and determine viral transduction efficiency. Using CRISPR/Cas9 technology, we knocked out the two classical endoplasmic reticulum chaperones calnexin (CNX) and/or calreticulin (CRT) and found that both CNX and CRT increase GP expression. Nevertheless, NGSs are not required for the GP interaction with CNX or CRT. Together, we conclude that, although Asn563 and Asn618 are not required for EBOV GP expression, they synergistically regulate its maturation, which determines its functionality.
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影响因子:
5.4
作者:
Maruyama, T;Rodriguez, LL;Burton, DR
通讯作者:
Burton, DR
影响因子:
5.4
作者:
Mohan, Gopi S.;Ye, Ling;Yang, Chinglai
通讯作者:
Yang, Chinglai
DOI:
10.1074/jbc.m115.675207
发表时间:
2015-07
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
Tao Zhou;Dylan A Frabutt;K. Moremen;Yong-Hui Zheng
通讯作者:
Tao Zhou;Dylan A Frabutt;K. Moremen;Yong-Hui Zheng
影响因子:
5.4
作者:
Sanchez, A;Yang, ZY;Peters, CJ
通讯作者:
Peters, CJ
DOI:
10.1073/pnas.93.8.3602
发表时间:
1996-04-16
影响因子:
11.1
作者:
Sanchez, A;Trappier, SG;Nichol, ST
通讯作者:
Nichol, ST