The morphology and composition of influenza A virus particles are not affected by low levels of M1 and M2 proteins in infected cells

被引:31
作者
Bourmakina, SV [1 ]
García-Sastre, A [1 ]
机构
[1] CUNY Mt Sinai Sch Med, Dept Microbiol, New York, NY 10029 USA
关键词
D O I
10.1128/JVI.79.12.7926-7932.2005
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We generated a recombinant influenza A virus (Mmut) that produced low levels of matrix (M1) and M2 proteins in infected cells. Mmut virus propagated to significantly lower titers than did wild-type virus in cells infected at low multiplicity. By contrast, virion morphology and incorporation of viral proteins and vRNAs into virus particles were similar to those of wild-type virus. We propose that a threshold amount of M1 protein is needed for the assembly of viral components into an infectious particle and that budding is delayed in Mmut virus-infected cells until sufficient levels of M1 protein accumulate at the plasma membrane.
引用
收藏
页码:7926 / 7932
页数:7
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