The Bipartite Geminivirus Coat Protein Aids BR1 Function in Viral Movement by Affecting the Accumulation of Viral Single-Stranded DNA
نویسندگان
چکیده
منابع مشابه
The bipartite geminivirus coat protein aids BR1 function in viral movement by affecting the accumulation of viral single-stranded DNA.
The movement of bipartite geminiviruses such as squash leaf curl virus (SqLCV) requires the cooperative interaction of two essential virus-encoded movement proteins, BR1 and BL1. While the viral coat protein AR1 is not essential for systemic infection, genetic studies demonstrate that its presence masks the defective phenotype of certain BR1 missense mutants, thus suggesting that coat protein d...
متن کاملThe geminivirus BR1 movement protein binds single-stranded DNA and localizes to the cell nucleus.
Plant viruses encode movement proteins that are essential for infection of the host but are not required for viral replication or encapsidation. Squash leaf curl virus (SqLCV), a bipartite geminivirus with a single-stranded DNA genome, encodes two movement proteins, BR1 and BL1, that have been implicated in separate functions in viral movement. To further elucidate these functions, we have inve...
متن کاملA phage single-stranded DNA (ssDNA) binding protein complements ssDNA accumulation of a geminivirus and interferes with viral movement.
Geminiviruses are plant viruses with circular single-stranded DNA (ssDNA) genomes encapsidated in double icosahedral particles. Tomato leaf curl geminivirus (ToLCV) requires coat protein (CP) for the accumulation of ssDNA in protoplasts and in plants but not for systemic infection and symptom development in plants. In the absence of CP, infected protoplasts accumulate reduced levels of ssDNA an...
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متن کاملCooperation in Viral Movement: The Geminivirus BL1 Movement Protein Interacts with BR1 and Redirects It from the Nucleus to the Cell Periphery.
For plant viruses to systemically infect a host requires the active participation of viral-encoded movement proteins. It has been suggested that BL1 and BR1, the two movement proteins encoded by the bipartite geminivirus squash leaf curl virus (SqLCV), act cooperatively to facilitate movement of the viral single-stranded DNA genome from its site of replication in the nucleus to the cell periphe...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1998
ISSN: 1098-5514,0022-538X
DOI: 10.1128/jvi.72.11.9247-9256.1998