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Virology. 2003 Jan 20;305(2):406-14.

Isolation and characterisation of the rabies virus N degrees-P complex produced in insect cells.

Author information

1
EMBL Grenoble Outstation, B.P. 181, 38042 Grenoble Cedex 9, France.

Abstract

When the nucleoprotein (N) of nonsegmented negative-strand RNA viruses is expressed in insect cells, it binds to cellular RNA and forms N-RNA complexes just like viral nucleocapsids. However, in virus-infected cells, N is prevented from binding to cellular RNA because a soluble complex is formed between N and the viral phosphoprotein (P), the N degrees -P complex. N is only released from this complex for binding to newly made viral or complementary RNA. We coexpressed rabies virus N and P proteins in insect cells and purified the N degrees -P complex. Characterisation by gel filtration, polyacrylamide gel electrophoresis, analytical ultracentrifugation, native mass spectroscopy, and electron microscopy showed that the complex consists of one N protein plus two P proteins, i.e., an N degrees -P(2) complex.

PMID:
12573586
DOI:
10.1006/viro.2002.1748
[Indexed for MEDLINE]
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