LOW PH INDUCES SWIVELING OF THE GLYCOPROTEIN HETERODIMERS IN THE SEMLIKI-FOREST VIRUS SPIKE COMPLEX

LOW PH INDUCES SWIVELING OF THE GLYCOPROTEIN HETERODIMERS IN THE SEMLIKI-FOREST VIRUS SPIKE COMPLEX
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DOI:
10.1016/0092-8674(95)90533-2
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发表时间:
1995-06-02
期刊:
影响因子:
64.5
通讯作者:
GOWEN, BE
GOWEN, BE
中科院分区:
生物学1区
文献类型:
--
作者:
FULLER, SD;BERRIMAN, JA;GOWEN, BE

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Time-resolved cryoelectron microscopy reveals the first step in the conformational changes that enable membrane fusion in Semliki Forest virus. The neutral pH structure reveals a central cavity within the spike complex, plate-like extensions forming a layer above the membrane, and the paths of the paired transmembrane domains connecting the trimeric spikes and pentamer-hexamer clustered capsid subunits. Low pH treatment results in centrifugal movement of E2, the receptor-binding subunit, centripetal movement of E1 to narrow the central cavity initiating the formation of an E1 trimer, and the extension of the E1 fusion sequence toward the target membrane.