Extremely halophilic pleomorphic archaeal virus HRPV9 extends the diversity of pleolipoviruses with integrases

Certain pleomorphic archaeal viruses are highly infectious even at saturated salt. These viruses belong to the genus Betapleolipovirus of the recently described archaeal virus family Pleolipoviridae. Pleolipoviruses comprise single-stranded or double-stranded, circular or linear DNA genomes that sha...

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Bibliographic Details
Published in:Research in microbiology 2018-11, Vol.169 (9), p.500-504
Main Authors: Atanasova, Nina S., Demina, Tatiana A., Krishnam Rajan Shanthi, Sudar N.V., Oksanen, Hanna M., Bamford, Dennis H.
Format: Article
Language:English
Subjects:
Archaeal virus
Archaeal Viruses - classification
Archaeal Viruses - enzymology
Archaeal Viruses - genetics
Archaeal Viruses - physiology
DNA Viruses - genetics
DNA, Viral - genetics
Genome, Viral
Halophilic
Hypersaline environment
Integrases - genetics
Open Reading Frames
Plasmids
Pleomorphic virus
Salinity
Virion
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Summary:Certain pleomorphic archaeal viruses are highly infectious even at saturated salt. These viruses belong to the genus Betapleolipovirus of the recently described archaeal virus family Pleolipoviridae. Pleolipoviruses comprise single-stranded or double-stranded, circular or linear DNA genomes that share countless homologues among various archaeal genetic elements. Here we describe a new extremely halophilic betapleolipovirus, Halorubrum pleomorphic virus 9 (HRPV9), which has an integrase gene. We also identified new genes encoding minor pleolipoviral structural proteins. The studies on HRPV9 enhance our knowledge on pleolipoviruses, especially their reciprocal relatedness and relation to certain archaeal plasmids, proviruses and membrane vesicles.
ISSN:0923-2508
1769-7123
DOI:10.1016/j.resmic.2018.04.004