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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Archaeal Viruses (6):
Recent article
Archaeal Viruses
Journal of Bacteriology (192)12 2010
Abstract
Viruses SH1 and P23-77, infecting archaeal Haloarcula species and bacterial Thermus species, respectively, were recently designated to form a novel viral lineage. In this study, the lineage is expanded to archaeal Halomicrobium and bacterial Meiothermus species by analysis of five genome-integrated...
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PMID: 20400546
PDF is available here.
PDF is available here.
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Journal of Virology (84)2 2010
Abstract
We used controlled virion dissociation to reveal the structural organization of Halorubrum pleomorphic virus 1 (HRPV-1) infecting an extremely halophilic archaeal host. The single-stranded DNA genome is enclosed in a pleomorphic membrane vesicle without detected nucleoproteins. VP4, the larger major...
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PMID: 19864380
PDF is available here.
PDF is available here.
Biochemical Society transactions (37)Pt 4 2009
Abstract
CPMV (cowpea mosaic virus), a plant virus, is a naturally occurring sphere-like nanoparticle, and is used as a synthon and/or template in bionanoscience. The virions formed by CPMV can be regarded as programmable nanobuilding blocks with a diameter of approximately 30 nm. A range of molecules have b...
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PMID: 19614572
PDF is available here.
PDF is available here.
Biochemical Society transactions (37)Pt 1 2009
Abstract
We know more about STIV than other viruses infecting members of the Archaea domain. Like most viruses isolated from crenarchaeal hosts, STIV has little in common with viruses that infect eukaryotic and bacterial hosts and should be considered the founding member of a new virus family. However, despi...
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PMID: 19143613
PDF is available here.
PDF is available here.
Abstract
We report the subnanometer resolution structure of a recently isolated, hypersalinic, membrane-containing, euryarchaeal virus, SH1, in which different viral proteins can be localized. The results indicate that SH1 has a complex capsid formed from single beta-barrels, an important missing link in hyp...
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PMID: 18515426
PDF is available here.
PDF is available here.
Research in Microbiology (159)5 2008
Abstract
We highlight some of the directions where we believe research on the prokaryotic virosphere will lead us in the near future....
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PMID: 18639443
PDF is available here.
PDF is available here.
Abstract
Abstract
We reconstructed virus and host bacterial and archaeal genome sequences from community genomic data from two natural acidophilic biofilms. Viruses were matched to their hosts by analyzing spacer sequences that occur among clustered regularly interspaced short palindromic repeats (CRISPRs) that are a...
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PMID: 18497291
PDF is available here.
PDF is available here.
Abstract
We monitored the diversity of two archaeal viruses found in hot springs within Yellowstone National Park (YNP). Both temporal phylogeny and neutral biodiversity models reveal that virus diversity in these local environments is not being maintained by mutation but rather by high rates of immigration...
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PMID: 18025457
PDF is available here.
PDF is available here.
Abstract
Sulfolobus turreted icosahedral virus (STIV) was the first non-tailed icosahedral virus to be isolated from an archaeal host. Like other archaeal viruses, its 37 open reading frames generally lack sequence similarity to genes with known function. The roles of the gene products in this and other arch...
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PMID: 17669459
PDF is available here.
PDF is available here.
Abstract
Halophage SNJ1 was induced with mitomycin C from Natrinema sp. strain F5. The phage produces plaques on Natrinema sp. strain J7 only. The phage has a head of about 67 nm in diameter and a tail of 570 nm in length and belongs morphologically to the family Siphoviridae. The phage is strongly salt depe...
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PMID: 18026232
PDF is available here.
PDF is available here.
Research in Microbiology (158)7 2007
Abstract
We present here the first version of a phage ontology, PhiGO, which should contribute to more informational annotation of gene products in phage and prophage sequences. PhiGO uses the Gene Ontology schema, the de facto standard for describing knowledge about gene products across many databases....
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PMID: 17614261
PDF is available here.
PDF is available here.
Research in Microbiology (158)7 2007
Abstract
Genome sequencing is of enormous importance for classification of prokaryote viruses and for understanding the evolution of these viruses. This survey covers 284 sequenced viruses for which a full description has been published and for which the morphology is known. This corresponds to 219 (4%) of t...
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PMID: 17889511
PDF is available here.
PDF is available here.
Abstract
We explore the methods used by haloviruses to replicate within their hosts and consider the implications of haloviral-haloarchaeal interactions for salt lake ecology....
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PMID: 17714980
PDF is available here.
PDF is available here.
Abstract
The Acidianus bottle-shaped virus, ABV, infects strains of the hyperthermophilic archaeal genus Acidianus and is morphologically distinct from all other known viruses. Its genome consists of linear double-stranded DNA, containing 23,814 bp with a G+C content of 35%, and it exhibits a 590-bp inverted...
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PMID: 17412384
PDF is available here.
PDF is available here.
Abstract
We have undertaken structural and biochemical studies of B116. The structure reveals a previously unobserved fold consisting of a five-stranded beta-sheet flanked on one side by three alpha helices. Two subunits come together to form a homodimer with a 10-stranded mixed beta-sheet, where the topolog...
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PMID: 17336360
PDF is available here.
PDF is available here.
Journal of Bacteriology (189)12 2007
Abstract
We report the results of complete analysis of the PAV1 genome. All the 25 predicted genes, except 3, are located on one DNA strand. A transcription map has been made by using a reverse transcription-PCR assay. All the identified open reading frames (ORFs) are transcribed. The most significant simila...
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PMID: 17449623
PDF is available here.
PDF is available here.
Extremophiles (11)2 2007
Abstract
We show that the intergenic region between ORF48 and ORF49 comprises a promoter/operator sequence that is a transcriptionally active region in the model system Haloferax volcanii. Transcription from this region can be repressed by the activity of the ORF48 gene product. Gp43/gp44 has an enhancing ef...
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PMID: 17123129
PDF is available here.
PDF is available here.
Microbial Ecology (53)1 2007
Abstract
It has been shown that phages are present in natural and engineered ecosystems and influence the structure and performance of prokaryotic communities. However, little has been known about phages occurring in anaerobic ecosystems, including those in methanogenic digesters for waste treatment. This st...
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PMID: 17186158
PDF is available here.
PDF is available here.
Extremophiles (10)6 2006
Abstract
We report the findings of a comparative study of SSV2 physiology in the natural host, Sulfolobus islandicus REY15/4, versus the foreign host, Sulfolobus solfataricus, and provide evidence of differently regulated SSV2 life cycles in the two hosts. In fact, whereas a significant induction of SSV2 rep...
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PMID: 16896526
PDF is available here.
PDF is available here.
Journal of Virology (80)15 2006
Abstract
We have undertaken structural studies of the STIV proteome. Here we report our work on A197, the product of an STIV open reading frame. The structure of A197 reveals a GT-A fold that is common to many members of the glycosyltransferase superfamily. A197 possesses a canonical DXD motif and a putative...
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PMID: 16840342
PDF is available here.
PDF is available here.
Journal of Virology (80)15 2006
Abstract
We present a detailed characterization of the components forming this unusual virus. Using a proteomics-based approach, we identified nine viral and two host proteins from purified STIV particles. Interestingly, one of the viral proteins originates from a reading frame lacking a consensus start site...
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PMID: 16840341
PDF is available here.
PDF is available here.
Journal of Molecular Biology (359)5 2006
Abstract
A novel virus, ATV, of the hyperthermophilic archaeal genus Acidianus has the unique property of undergoing a major morphological development outside of, and independently of, the host cell. Virions are extruded from host cells as lemon-shaped tail-less particles, after which they develop long tails...
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PMID: 16677670
PDF is available here.
PDF is available here.
Virus Research (117)1 2006
Abstract
We describe a re-analysis of the proteins encoded by archaeal viruses, with an emphasis on comparative genomics of the unique viruses of Crenarchaeota. Detailed examination of conserved domains and motifs uncovered a significant number of previously unnoticed homologous relationships among the prote...
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PMID: 16503363
PDF is available here.
PDF is available here.
Extremophiles (10)1 2006
Abstract
The crenarchaeote Sulfolobus spp. is a host for a remarkably large spectrum of viruses and plasmids. The genetic elements characterized so far indicate a large degree of novelty in terms of morphology (viruses) and in terms of genome content (plasmids and viruses). The viruses and conjugative plasmi...
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PMID: 16397749
PDF is available here.
PDF is available here.
Abstract
We study the distribution of the structural proteins between the capsid and the membrane of icosahedral SH1 virus, an archaeal virus infecting extreme halophilic Haloarcula hispanica cells. General features such as morphology, linear dsDNA genome and presence of lipids suggest that it may belong to...
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PMID: 16935317
PDF is available here.
PDF is available here.
Trends in Microbiology (13)11 2005
Abstract
Since the discovery of the Archaea--the third domain of life--by Woese and colleagues in 1977, the subsequent developments in molecular and cell biology, and also genomics, have strongly reinforced the view that archaea and eukarya co-evolved, separately from bacteria, over a long time. However, whe...
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PMID: 16154357
PDF is available here.
PDF is available here.
Abstract
We describe an exceptional property of a newly discovered virus that infects a hyperthermophilic archaeon growing in acidic hot springs: the lemon-shaped viral particle develops a very long tail at each of its pointed ends after being released from its host cell. The process occurs only at the tempe...
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PMID: 16121167
PDF is available here.
PDF is available here.
Journal of Virology (79)14 2005
Abstract
A virus infecting the hyperthermophilic archaeon Sulfolobus tengchongensis has been isolated from a field sample from Tengchong, China, and characterized. The virus, denoted STSV1 (Sulfolobus tengchongensis spindle-shaped virus 1), has the morphology of a spindle (230 by 107 nm) with a tail of varia...
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PMID: 15994761
PDF is available here.
PDF is available here.
Abstract
The Holliday junction (or four-way junction) is the universal DNA intermediate whose interaction with resolving proteins is one of the major events in the recombinational process. These proteins, called DNA junction-resolving enzymes or resolvases, bind to the junction and catalyse DNA cleavage, pro...
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PMID: 16511081
PDF is available here.
PDF is available here.
Abstract
A novel halovirus, SH1, with a spherical morphology is described. Isolated from a hypersaline lake, SH1 is divalent, producing clear plaques on Haloarcula hispanica and a natural Halorubrum isolate. Single-step growth curves gave a latent period of 5-6 h and a burst size of around 200 PFU/cell. The...
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PMID: 15823603
PDF is available here.
PDF is available here.
Microbial Ecology (48)4 2004
Abstract
We have employed culture-independent methods to assess the diversity of Sulfolobus spindle-shaped viruses (SSVs) from extremely hyperthermal environments. This diversity is then compared to the viral diversity of cultured samples. We detected a clear culturing bias between environmental samples and...
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PMID: 15696389
PDF is available here.
PDF is available here.
Abstract
We propose to assign PSV to a new viral family, the Globuloviridae....
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PMID: 15193919
PDF is available here.
PDF is available here.
Journal of Bacteriology (186)9 2004
Abstract
Haloviruses HF1 and HF2 were isolated from the same saltern pond and are adapted to hypersaline conditions, where they infect a broad range of haloarchaeal species. The HF2 genome has previously been reported. The complete sequence of the HF1 genome has now been determined, mainly by PCR and primer...
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PMID: 15090523
PDF is available here.
PDF is available here.
Biochemical Society Transactions (32)Pt 2 2004
Abstract
The remarkable diversity of the morphologies of viruses found in terrestrial hydrothermal environments with temperatures >80 degrees C is unprecedented for aquatic ecosystems. The best-studied viruses from these habitats have been assigned to novel viral families: Fuselloviridae, Lipothrixviridae an...
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PMID: 15046572
PDF is available here.
PDF is available here.
Journal of Virology (78)4 2004
Abstract
The complete genome sequences of two Sulfolobus spindle-shaped viruses (SSVs) from acidic hot springs in Kamchatka (Russia) and Yellowstone National Park (United States) have been determined. These nonlytic temperate viruses were isolated from hyperthermophilic Sulfolobus hosts, and both viruses sha...
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PMID: 14747560
PDF is available here.
PDF is available here.
Research in Microbiology (154)7 2003
Abstract
The viruses of Archaea are likely to be useful tools for studying host evolution, host biochemical pathways, and as tools for the biotechnology industry. Many of the viruses isolated from Archaea show distinct morphologies and genes. The euryarchaeal viruses show morphologies similar to the head-and...
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PMID: 14499933
PDF is available here.
PDF is available here.
Research in Microbiology (154)4 2003
Abstract
The scarce characterisation of the viral world has hampered our efforts to appreciate the magnitude and diversity of the viral domain. It appears that almost every species can be infected by a number of viruses. As our knowledge of viruses increases, it appears that this myriad of viruses may be org...
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PMID: 12798226
PDF is available here.
PDF is available here.
Research in Microbiology (154)4 2003
Abstract
We suggest that this remarkable diversity could have its source in ancestral diversity of viral morphotypes in hot environments. Attempts are made to trace evolutionary relationships of viruses of hyperthermophilic archaea with other viruses....
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PMID: 12798234
PDF is available here.
PDF is available here.
Research in Microbiology (154)4 2003
Abstract
We provide an outline of the reported haloviruses, including fusiform and unpublished isolates from this laboratory, and we discuss their diversity and the future directions for this research....
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PMID: 12798237
PDF is available here.
PDF is available here.
Research in Microbiology (154)4 2003
Abstract
A systematic search was carried out on samples collected in various geographically distant hydrothermal sites located on the East Pacific Rise (EPR 9 degrees N and 13 degrees N) and Mid-Atlantic Ridge (MAR 36 degrees N and 37 degrees N) to investigate the diversity of virus-like particles (VLPs) fro...
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PMID: 12798236
PDF is available here.
PDF is available here.
Archives of Virology (147)12 2002
Abstract
Electron microscopic studies of the viruses in two hot springs (85 degrees C, pH 1.5-2.0, and 75-93 degrees C, pH 6.5) in Yellowstone National Park revealed particles with twelve different morphotypes. This diversity encompassed known viruses of hyperthermophilic archaea, filamentous Lipothrixvirida...
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PMID: 12491107
PDF is available here.
PDF is available here.
Abstract
We report the discovery, isolation, and preliminary characterization of viruses and virus-like particles from extreme thermal acidic environments (70-92 degrees C, pH 1.0-4.5) found in Yellowstone National Park. Six unique particle morphologies were found in Sulfolobus enrichment cultures. Three of...
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PMID: 11606757
PDF is available here.
PDF is available here.