An ssDNA virus infecting archaea: a new lineage of viruses with a membrane envelope

@article{Pietil2009AnSV,
  title={An ssDNA virus infecting archaea: a new lineage of viruses with a membrane envelope},
  author={M. K. Pietil{\"a} and E. Roine and L. Paulin and N. Kalkkinen and D. Bamford},
  journal={Molecular Microbiology},
  year={2009},
  volume={72}
}
Archaeal organisms are generally known as diverse extremophiles, but they play a crucial role also in moderate environments. So far, only about 50 archaeal viruses have been described in some detail. Despite this, unusual viral morphotypes within this group have been reported. Interestingly, all isolated archaeal viruses have a double‐stranded DNA (dsDNA) genome. To further characterize the diversity of archaeal viruses, we screened highly saline water samples for archaea and their viruses… Expand
Archaeal Haloarcula californiae Icosahedral Virus 1 Highlights Conserved Elements in Icosahedral Membrane-Containing DNA Viruses from Extreme Environments
TLDR
Haloarcula californiae icosahedral virus 1 (HCIV-1) is introduced, a halophilic euryarchaeal virus originating from salt crystals that is a member of the PRD1-adenovirus structure-based lineage together with other sphaerolipoviruses and further highlights the limits of the choices found in nature for formation of a virion. Expand
Viruses of hyperthermophilic archaea : entry and egress from the host cell
TLDR
Two model hyperthermo-acidophilic virus-host systems, the spindle-shaped SSV1 and rod-shaped SIRV2, both infecting organisms of the genus Sulfolobus are focused on, shedding light on the biology of archaeal viruses and help to define interesting targets that should be the focus of intensive research in the next future. Expand
Virion Architecture Unifies Globally Distributed Pleolipoviruses Infecting Halophilic Archaea
TLDR
Based on the comparative study, seven pleomorphic viruses infecting extremely halophilic archaea probably form a novel group, which is defined as pleolipoviruses, which are likely to have similar architectures but different genome types. Expand
Archaeal virus with exceptional virion architecture and the largest single-stranded DNA genome
TLDR
The virus ACV is the only virus with a single-stranded DNA genome among the known hyperthermophilic archaeal viruses and the size of its circular genome is double that of the largest known ssDNA genome, suggesting an efficient solution for keeping ssDNA intact at 90–95 °C, the optimal temperature range of A. pernix growth. Expand
Archaeal virus-host interactions
TLDR
PVAP serves as a universal membrane remodeling system, which might be exploited for biotechnological purposes, such as the development into a universal system for the controlled opening of ~100 nm apertures in any lipid bilayer. Expand
Genomics of Bacterial and Archaeal Viruses: Dynamics within the Prokaryotic Virosphere
TLDR
It becomes clear that evolutionary mechanisms shaping the genomes of prokaryotic viruses vary between different families and depend on the type of the nucleic acid, characteristics of the virion structure, as well as the mode of the life cycle. Expand
The Single-Stranded DNA Genome of Novel Archaeal Virus Halorubrum Pleomorphic Virus 1 Is Enclosed in the Envelope Decorated with Glycoprotein Spikes
ABSTRACT Only a few archaeal viruses have been subjected to detailed structural analyses. Major obstacles have been the extreme conditions such as high salinity or temperature needed for theExpand
Insights into Head-Tailed Viruses Infecting Extremely Halophilic Archaea
TLDR
It is shown that these viruses are inactivated, yet remain intact, at low salinity and that their infectivity is regained when high salinity is restored, and that rigorous comparisons with bacteriophages are not yet warranted. Expand
Archaeal Viruses: Diversity, Replication, and Structure.
TLDR
Structural studies have not only provided insights into structure-function relationships but have also identified links between viruses across all three domains of life. Expand
New, Closely Related Haloarchaeal Viral Elements with Different Nucleic Acid Types
TLDR
A new pleomorphic lipid-containing virus that infects the halophilic archaeon Haloarcula hispanica pleomorphic virus 1 (HHPV-1), that contains a circular double-stranded DNA genome of 8,082 bp in size is isolated and characterized and shows remarkable synteny and amino acid sequence similarity to the genome and predicted proteins. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 56 REFERENCES
Constituents of SH1, a Novel Lipid-Containing Virus Infecting the Halophilic Euryarchaeon Haloarcula hispanica
TLDR
This investigation rigorously show that SH1, an icosahedral dsDNA virus infecting Haloarcula hispanica, possesses lipid structural components that are selectively acquired from the host pool, and the sequence of the 31-kb SH1 genome is determined and shows no detectable similarity to other published sequences. Expand
Evolutionary genomics of archaeal viruses: unique viral genomes in the third domain of life.
TLDR
It is concluded that crenarchaeal viruses are, in general, evolutionarily unrelated to other known viruses and, probably, evolved via independent accretion of genes derived from the hosts and, through more complex routes of horizontal gene transfer, from other prokaryotes. Expand
Sequence analysis of an Archaeal virus isolated from a hypersaline lake in Inner Mongolia, China
TLDR
The genomic sequence of a previously undescribed archaeal virus, BJ1, described in this paper has a very low sequence identity to any previously described virus. Expand
His1, an Archaeal Virus of theFuselloviridae Family That Infects Haloarcula hispanica
TLDR
Morphologically, this isolate clearly belongs to the recently proposed Fuselloviridae family of archaeal viruses, and is the first member of this family from the extremely halophilic archaea, and its host, H. hispanica, can be readily manipulated genetically. Expand
Sulfolobus tengchongensis Spindle-Shaped Virus STSV1: Virus-Host Interactions and Genomic Features
TLDR
Both morphological and genomic features identify STSV1 as a novel virus infecting the genus Sulfolobus, which has the morphology of a spindle with a tail of variable length and is the largest of the known spindle-shaped viruses. Expand
Characterization of Natronobacterium magadii phage ΦCh1, a unique archaeal phage containing DNA and RNA
TLDR
Phage ΦCh1 is the first virus described for the genus Natronobacterium, and the first phage containing DNA and RNA in mature phage particles. Expand
Putative prophages related to lytic tailless marine dsDNA phage PM2 are widespread in the genomes of aquatic bacteria
TLDR
Evidence is presented to support the viral "self" hypothesis and divide genes of the bacteriophage PM2 and related prophages into " self" and "nonself" categories, and suggests that abundance of PM2-like viruses in the aquatic environment as well as their importance in the ecology of aquatic microorganisms might have been underestimated. Expand
SNDV, a novel virus of the extremely thermophilic and acidophilic archaeon Sulfolobus.
TLDR
A novel virus, SNDV (Sulfolobus neozealandicus droplet-shaped virus), of the crenarchaeotal archaeon Sulfol Obus is described and proposed to assign it to a novel virus family termed Guttaviridae, which is postulate a virus-encoded methylase that is active on hemimethylated DNA. Expand
His1 and His2 are distantly related, spindle-shaped haloviruses belonging to the novel virus group, Salterprovirus.
TLDR
Their particle dimensions, host-ranges and buoyant densities were found to be similar but they differed in their stabilities to raised temperature, low salinity and chloroform, suggesting a high frequency of recombination between haloviruses and their hosts. Expand
Viral Diversity in Hot Springs of Pozzuoli, Italy, and Characterization of a Unique Archaeal Virus, Acidianus Bottle-Shaped Virus, from a New Family, the Ampullaviridae
TLDR
Virus-like particles with five different morphotypes observed in an enriched environmental sample from a hot, acidic spring in Pozzuoli, Italy are proposed to be assigned to a new viral family, the Ampullaviridae. Expand
...
1
2
3
4
5
...