Results 31 to 40 of about 1,397 (172)

The Mimivirus L375 Nudix enzyme hydrolyzes the 5' mRNA cap.

PLoS ONE, 2021
The giant Mimivirus is a member of the nucleocytoplasmic large DNA viruses (NCLDV), a group of diverse viruses that contain double-stranded DNA (dsDNA) genomes that replicate primarily in eukaryotic hosts.
Grace Kago, Susan Parrish
doaj   +1 more source

Primase-polymerases are a functionally diverse superfamily of replication and repair enzymes [PDF]

, 2015
Until relatively recently, DNA primases were viewed simply as a class of proteins that synthesize short RNA primers requisite for the initiation of DNA replication.
Aidan J. Doherty, Benjamin A. Keen, Bianchi, Bouché, Collins, Crute, Kaguni, Klinedinst, Klinedinst, Koonin, Marsden, Moss, Nigel C. Brissett, Rowen, Scherzinger, Sherman, Takechi, Thomas A. Guilliam   +17 more
core   +1 more source

Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence

Biological Reviews, Volume 97, Issue 1, Page 179-194, February 2022., 2022
ABSTRACT Collectively known as phytoplankton, photosynthetic microbes form the base of the marine food web, and account for up to half of the primary production on Earth. Haptophytes are key components of this phytoplankton community, playing important roles both as primary producers and as mixotrophs that graze on bacteria and protists.
Ruth‐Anne Sandaa, Marius R. Saltvedt, Håkon Dahle, Haina Wang, Selina Våge, Romain Blanc‐Mathieu, Ida H. Steen, Nigel Grimsley, Bente Edvardsen, Hiroyuki Ogata, Janice Lawrence   +10 more
wiley   +1 more source

Viral suppressor of RNA silencing in vascular plants also interferes with the development of the bryophyte Physcomitrella patens

Plant, Cell &Environment, Volume 45, Issue 1, Page 220-235, January 2022., 2022
Abstract Plant viruses are important pathogens able to overcome plant defense mechanisms using their viral suppressors of RNA silencing (VSR). Small RNA pathways of bryophytes and vascular plants have significant similarities, but little is known about how viruses interact with mosses. This study elucidated the responses of Physcomitrella patens to two
Eeva M. Marttinen, Mikko T. Lehtonen, Nico van Gessel, Ralf Reski, Jari P. T. Valkonen   +4 more
wiley   +1 more source

A vertically transmitted amalgavirus is present in certain accessions of the bryophyte Physcomitrium patens

The Plant Journal, Volume 108, Issue 6, Page 1786-1797, December 2021., 2021
Summary In the last few years, next‐generation sequencing techniques have started to be used to identify new viruses infecting plants. This has allowed to rapidly increase our knowledge on viruses other than those causing symptoms in economically important crops. Here we used this approach to identify a virus infecting Physcomitrium patens that has the
Pol Vendrell‐Mir, Pierre‐François Perroud, Fabian B. Haas, Rabea Meyberg, Florence Charlot, Stefan A. Rensing, Fabien Nogué, Josep M. Casacuberta   +7 more
wiley   +1 more source

Advantages and Limits of Metagenomic Assembly and Binning of a Giant Virus

mSystems, 2020
Giant viruses have large genomes, often within the size range of cellular organisms. This distinguishes them from most other viruses and demands additional effort for the successful recovery of their genomes from environmental sequence data.
Frederik Schulz, Julien Andreani, Rania Francis, Hadjer Boudjemaa, Jacques Yaacoub Bou Khalil, Janey Lee, Bernard La Scola, Tanja Woyke   +7 more
doaj   +3 more sources

Phylogenetic and phyletic studies of informational genes in genomes highlight existence of a 4 domain of life including giant viruses. [PDF]

PLoS ONE, 2010
The discovery of Mimivirus, with its very large genome content, made it possible to identify genes common to the three domains of life (Eukarya, Bacteria and Archaea) and to generate controversial phylogenomic trees congruent with that of ribosomal genes,
Mickaël Boyer, Mohammed-Amine Madoui, Gregory Gimenez, Bernard La Scola, Didier Raoult   +4 more
doaj   +1 more source

Schrödinger’s Cheshire cat: are haploid Emiliania huxleyi cells resistant to viral infection or not? [PDF]

, 2017
Emiliania huxleyi is the main calcite producer on Earth and is routinely infected by a virus (EhV); a double stranded DNA (dsDNA) virus belonging to the family Phycodnaviridae. E. huxleyi exhibits a haplodiploid life cycle; the calcified diploid stage is
Andrea Highfield, Declan Schroeder, Frederic Verret, Gideon Mordecai, Suttle, VanValen, Wilson   +6 more
core   +5 more sources

Nucleic and Amino Acid Sequences Support Structure-Based Viral Classification [PDF]

, 2017
Viral capsids ensure viral genome integrity by protecting the enclosed nucleic acids. Interactions between the genome and capsid and between individual capsid proteins (i.e., capsid architecture) are intimate and are expected to be characterized by ...
Bamford, Dennis H., Ravantti, Janne J., Sinclair, Robert M.   +2 more
core   +2 more sources

Analysis of virus genomes from glacial environments reveals novel virus groups with unusual host interactions [PDF]

, 2015
Microbial communities in glacial ecosystems are diverse, active, and subjected to strong viral pressures and infection rates. In this study we analyse putative virus genomes assembled from three dsDNA viromes from cryoconite hole ecosystems of Svalbard ...
Anesio, Alexandre M B, Barker, Gary L A, Bellas, Christopher M   +2 more
core   +3 more sources