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Journal of Virology, September 2006, p. 9326-9330, Vol. 80, No. 18
0022-538X/06/$08.00+0     doi:10.1128/JVI.01005-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Complete Genome Sequence of the Broad Host Range Single-Stranded RNA Phage PRR1 Places It in the Levivirus Genus with Characteristics Shared with Alloleviviruses

Tanja M. Ruokoranta, A. Marika Grahn,{dagger} Janne J. Ravantti, Minna M. Poranen, and Dennis H. Bamford*

Department of Biological and Environmental Sciences and Institute of Biotechnology, Viikki Biocenter, P.O. Box 56, 00014 University of Helsinki, Helsinki, Finland

Received 16 May 2006/ Accepted 21 June 2006

Single-stranded RNA (ssRNA) bacteriophages of the family Leviviridae infect gram-negative bacteria. They are restricted to a single host genus. Phage PRR1 is an exception, having a broad host range due to the promiscuity of the receptor encoded by the IncP plasmid. Here we report the complete genome sequence of PRR1. Three proteins homologous with those of other ssRNA phages, i.e., maturation, coat, and replicase proteins, were identified. A fourth protein has a lysis function. Comparison of PRR1 with other members of the Leviviridae family places PRR1 in the genus Levivirus with some characteristics more similar to those of members of the genus Allolevivirus.

* Corresponding author. Mailing address: Viikki Biocenter 2, P.O. Box 56 (Viikinkaari 5), FIN-00014 University of Helsinki, Helsinki, Finland. Phone: 358-9-19159100. Fax: 358-9-19159098. E-mail: dennis.bamford{at}helsinki.fi.

{dagger} Present address: Roal Oy, P.O. Box 57, 05201 Rajamäki, Finland.

Journal of Virology, September 2006, p. 9326-9330, Vol. 80, No. 18
0022-538X/06/$08.00+0     doi:10.1128/JVI.01005-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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Copyright © 2006 by the American Society for Microbiology. All rights reserved.