The structure of an infectious immature flavivirus redefines viral architecture and maturation.
The structure of an infectious immature flavivirus redefines viral architecture and maturation.
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DOI:
10.1126/sciadv.abe4507
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发表时间:
2021-05
期刊:
影响因子:
13.6
通讯作者:
Watterson D
中科院分区:
文献类型:
--
作者:
Newton ND;Hardy JM;Modhiran N;Hugo LE;Amarilla AA;Bibby S;Venugopal H;Harrison JJ;Traves RJ;Hall RA;Hobson-Peters J;Coulibaly F;Watterson D
The structure of an infectious immature flavivirus redefines viral architecture and maturation. Flaviviruses are the cause of severe human diseases transmitted by mosquitoes and ticks. These viruses use a potent fusion machinery to enter target cells that needs to be restrained during viral assembly and egress. A molecular chaperone, premembrane (prM) maintains the virus particles in an immature, fusion-incompetent state until they exit the cell. Taking advantage of an insect virus that produces particles that are both immature and infectious, we determined the structure of the first immature flavivirus with a complete spike by cryo–electron microscopy. Unexpectedly, the prM chaperone forms a supporting pillar that maintains the immature spike in an asymmetric and upright state, primed for large rearrangements upon acidification. The collapse of the spike along a path defined by the prM chaperone is required, and its inhibition by a multivalent immunoglobulin M blocks infection. The revised architecture and collapse model are likely to be conserved across flaviviruses.
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DOI:
10.1107/s0907444910051218
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Bunkóczi G;Read RJ
通讯作者:
Read RJ
影响因子:
14.8
作者:
Kelley LA;Mezulis S;Yates CM;Wass MN;Sternberg MJ
通讯作者:
Sternberg MJ
影响因子:
2.7
作者:
Crabtree, MB;Sang, RC;Miller, BR
通讯作者:
Miller, BR
影响因子:
64.8
作者:
Modis, Y;Ogata, S;Harrison, SC
通讯作者:
Harrison, SC
影响因子:
2.2
作者:
Jones, Martina L.;Seldone, Therese;Munro, Trent P.
通讯作者:
Munro, Trent P.