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Initiation of Poliovirus Plus-strand RNA Synthesis in a Membrane Complex of Infected HeLa Cells

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Journal J Virol
Date 1986 Oct 1
PMID 3018300
Citations 81
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Abstract

An in vitro poliovirus RNA-synthesizing system derived from a crude membrane fraction of infected HeLa cells was used to analyze the mechanism of initiation of poliovirus plus-strand RNA synthesis. This system contains an activity that synthesizes the nucleotidyl proteins VPg-pU and VPg-pUpU. These molecules represent the 5'-terminal structure of nascent RNA molecules and of virion RNA. The membranous replication complex is also capable of synthesizing nucleotidyl proteins containing nine or more of the poliovirus 5'-proximal nucleotides as assayed by the formation of the RNase T1-resistant oligonucleotide VPg-pUUAAAACAGp or by fingerprint analysis of the in vitro-synthesized RNA. Incubation of preformed VPg-pUpU with unlabeled nucleoside triphosphates resulted in the formation of VPg-pUUAAAACAGp. This reaction, which appeared to be an elongation of VPg-pUpU, was stimulated by the addition of a soluble fraction (S-10) obtained from uninfected HeLa cells. Preformed VPg-pU could be chased into VPg-pUpU in the presence of UTP. Our data are consistent with a model that VPg-pU can function as a primer for poliovirus plus-strand RNA synthesis in the membranous replication complex and that the elongation reaction may be stimulated by a host cellular factor.

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References
1.
Laemmli U . Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970; 227(5259):680-5. DOI: 10.1038/227680a0. View

2.
Romanova L, Agol V . Interconversion of linear and circular forms of double-stranded RNA of encephalomyocarditis virus. Virology. 1979; 93(2):574-7. DOI: 10.1016/0042-6822(79)90260-5. View

3.
CALIGUIRI L, Tamm I . Characterization of poliovirus-specific structures associated with cytoplasmic membranes. Virology. 1970; 42(1):112-22. DOI: 10.1016/0042-6822(70)90243-6. View

4.
McDonnell J, LEVINTOW L . Kinetics of appearance of the products of poliovirus-induced RNA polymerase. Virology. 1970; 42(4):999-1006. DOI: 10.1016/0042-6822(70)90348-x. View

5.
Mosser A, CALIGUIRI L, Scheid A, Tamm I . Chemical and enzymatic characteristics of cytoplasmic membranes of poliovirus-infected HeLa cells. Virology. 1972; 47(1):30-8. DOI: 10.1016/0042-6822(72)90235-8. View