PR domain of Rous sarcoma virus Gag causes an assembly/budding defect in insect cells

被引:19
作者
Johnson, MC [1 ]
Scobie, HM [1 ]
Vogt, VM [1 ]
机构
[1] Cornell Univ, Dept Mol Biol & Genet, Ithaca, NY 14853 USA
关键词
D O I
10.1128/JVI.75.9.4407-4412.2001
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
While baculovirus expression of Gag proteins from numerous retroviruses has led reliably to production of virus-like particles (VLPs), we observed that expression of Rous sarcoma virus Gag failed to produce VLPs. Transmission and scanning electron microscopy analysis revealed that the Gag protein reached the plasma membrane but was unable to correctly form particles. Addition of a myristylation signal had no effect on the budding defect, but deletion of the PR domain of Gag restored normal budding. The resulting VLPs were morphologically distinct from human immunodeficiency virus type 1 VLPs expressed in parallel.
引用
收藏
页码:4407 / 4412
页数:6
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