JVI Figure table search 04
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Pritlove, D. C.
Right arrow Articles by Brownlee, G. G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Pritlove, D. C.
Right arrow Articles by Brownlee, G. G.

 Previous Article  |  Next Article 

J Virol, February 1998, p. 1280-1286, Vol. 72, No. 2
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Polyadenylation of Influenza Virus mRNA Transcribed In Vitro from Model Virion RNA Templates: Requirement for 5' Conserved Sequences

David C. Pritlove, Leo L. M. Poon, Ervin Fodor,dagger Jane Sharps, and George G. Brownlee*

Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, United Kingdom

Received 4 September 1997/Accepted 4 November 1997

Here we report the development of two independent assays which demonstrate for the first time that exogenous model RNA templates based on influenza virus virion RNA (vRNA) are transcribed in vitro to produce polyadenylated mRNA. We investigated the activities of mutated templates with known polymerase binding properties to test our model that polyadenylation occurs when a polymerase complex, which is bound to conserved 5' sequences of vRNA, prevents read-through of the U track at which polyadenylation subsequently occurs by reiterative copying. Mutated templates with perturbed polymerase binding sites (i.e., a deletion mutant lacking the first 4 5' residues and a Uright-arrowA point mutant at the third residue) initiated transcription in the in vitro assay but failed to produce polyadenylated transcripts, whereas an Aright-arrowU point mutant at the fourth residue, which retained polymerase binding properties similar to those of the wild type, produced polyadenylated transcripts. Our results show that nucleotides within the conserved 5' sequence are required for polyadenylation and support the hypothesis that polymerase binding to 5' sequences of the template is required for mRNA synthesis.

* Corresponding author. Mailing address: Chemical Pathology Unit, Sir William Dunn School of Pathology, University of Oxford, South Parks Rd., Oxford OX1 3RE, United Kingdom. Phone: (1865) 275559. Fax: (1865) 275556. E-mail: George.Brownlee{at}path.ox.ac.uk.

dagger Present address: Department of Microbiology, Mount Sinai School of Medicine, New York, NY 10029.




This article has been cited by other articles:



Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Mol. Cell. Biol. Microbiol. Mol. Biol. Rev.
Clin. Vaccine Immunol. ALL ASM JOURNALS

Copyright © 1998 by the American Society for Microbiology. All rights reserved.