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Archives of Virology

, Volume 157, Issue 10, pp 2035–2046

First Online: 17 June 2012Received: 23 March 2012Accepted: 24 April 2012

Abstract

We suggest a bacteriophage genus -Viunalikevirus-, as a new genus within the family Myoviridae. To date, this genus includes seven sequenced members: Salmonella phages ViI, SFP10 and ΦSH19; Escherichia phages CBA120 and PhaxI; Shigella phage phiSboM-AG3; and Dickeya phage LIMEstone1. Their shared myovirus morphology, with comparable head sizes and tail dimensions, and genome organization are considered distinguishing features. They appear to have conserved regulatory sequences, a horizontally acquired tRNA set and the probable substitution of an alternate base for thymine in the DNA. A close examination of the tail spike region in the DNA revealed four distinct tail spike proteins, an arrangement which might lead to the umbrella-like structures of the tails visible on electron micrographs. These properties set the suggested genus apart from the recently ratified subfamily Tevenvirinae, although a significant evolutionary relationship can be observed.

Electronic supplementary materialThe online version of this article doi:10.1007-s00705-012-1360-5 contains supplementary material, which is available to authorized users.

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