期刊
JOURNAL OF VIROLOGY
卷 83, 期 21, 页码 11402-11406出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.00504-09
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资金
- National Institutes of Health [AI050066, AI-065795]
The nucleocapsid protein (NP) of mumps virus (MuV), a paramyxovirus, was coexpressed with the phosphoprotein (P) in Escherichia coli. The NP and P proteins form a soluble complex containing RNA. Under a transmission electron microscope, the NP-RNA complex appears as a nucleocapsidlike ring that has a diameter of approximately 20 nm with 13 subunits. There is a piece of single-stranded RNA with a length of 78 nucleotides in the NP-RNA ring. Shorter RNA pieces are also visible. The MuV NP protein may provide weaker protection of the RNA than the NP protein of some other negative-strand RNA viruses, reflecting the degree of NP protein association.
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