Journal
VIROLOGY
Volume 468, Issue -, Pages 421-443Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.virol.2014.08.024
Keywords
Bacteriophage; Tailed phage; Caudovirales; Enterobacteriaceae
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Funding
- NIH [RO1-AI074825]
- U. of Utah Pathology Department
- College of Life Sciences of Brigham Young University
- Department of Microbiology and Molecular Biology of Brigham Young University
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Bacteriophages are the predominant biological entity on the planet. The recent explosion of sequence information has made estimates of their diversity possible. We describe the genomic comparison of 337 fully sequenced tailed phages isolated on 18 genera and 31 species of bacteria in the Enterobacteriaceae. These phages were largely unambiguously grouped into 56 diverse clusters (32 lytic and 24 temperate) that have syntenic similarity over > 50% of the genomes within each cluster, but substantially less sequence similarity between clusters. Most clusters naturally break into sets of more closely related subclusters, 78% of which are correlated with their host genera. The largest groups of related phages are superclusters united by genome synteny to lambda (81 phages) and T7 (51 phages). This study forms a robust framework for understanding diversity and evolutionary relationships of existing tailed phages, for relating newly discovered phages and for determining host/phage relationships. (C) 2014 Elsevier Inc. All rights reserved.
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