Results 61 to 70 of about 933 (157)
Structure of Sputnik, a virophage, at 3.5-Å resolution [PDF]
Proceedings of the National Academy of Sciences, 2012 “Sputnik” is a dsDNA virus, referred to as a virophage, that is coassembled with Mimivirus in the host amoeba. We have used cryo-EM to produce an electron density map of the icosahedral Sputnik virus at 3.5-Å resolution, sufficient to verify the identity of most amino acids in the capsid proteins and to establish the identity of the ...
Xinzheng, Zhang +6 more
openaire +2 more sources
GMS Hygiene and Infection Control, 2014 [english] Aim: During the last decade it became obvious that viruses belonging to and families (order Megavirales), may be potential causative agents of pneumonia. Thus, we have performed a review of the association of , , and virophages with pneumonia,
Kutikhin, Anton G. +2 more
doaj +1 more source
A systematic approach to cancer: evolution beyond selection
Clinical and Translational Medicine, Volume 6, Issue 1, December 2017., 2017 AbstractCancer is typically scrutinized as a pathological process characterized by chromosomal aberrations and clonal expansion subject to stochastic Darwinian selection within adaptive cellular ecosystems. Cognition based evolution is suggested as an alternative approach to cancer development and progression in which neoplastic cells of differing ...
William B. Miller Jr., John S. Torday
wiley +1 more source
Polinton-like viruses are abundant in aquatic ecosystems
Microbiome, 2021 Background Polintons are large mobile genetic elements found in the genomes of eukaryotic organisms that are considered the ancient ancestors of most eukaryotic dsDNA viruses.
Christopher M. Bellas, Ruben Sommaruga
doaj +1 more source
Epigenetic Influences of Mobile Genetic Elements on Ciliate Genome Architecture and Evolution [PDF]
, 2022 Mobile genetic elements (MGEs) are transient genetic material that can move either within a single organism\u27s genome or between individuals or species.
Katz, Laura A. +2 more
core +2 more sources
The Common Ancestor of Archaea and Eukarya Was Not an Archaeon
Archaea, Volume 2013, Issue 1, 2013., 2013 It is often assumed that eukarya originated from archaea. This view has been recently supported by phylogenetic analyses in which eukarya are nested within archaea. Here, I argue that these analyses are not reliable, and I critically discuss archaeal ancestor scenarios, as well as fusion scenarios for the origin of eukaryotes.
Patrick Forterre +1 more
wiley +1 more source
Smaller Fleas: Viruses of Microorganisms
Scientifica, Volume 2012, Issue 1, 2012., 2012 Life forms can be roughly differentiated into those that are microscopic versus those that are not as well as those that are multicellular and those that, instead, are unicellular. Cellular organisms seem generally able to host viruses, and this propensity carries over to those that are both microscopic and less than truly multicellular.
Paul Hyman +5 more
wiley +1 more source
Characteristics of virophages and giant viruses
Acta Biochimica Polonica, 2018 Five years after being discovered in 2003, some giant viruses were demonstrated to play a role of the hosts for virophages, their parasites, setting out a novel and yet unknown regulatory mechanism of the giant viruses presence in an aqueous. So far, 20 virophages have been registered and 13 of them have been described as a metagenomic material, which ...
Wiesław Deptuła +3 more
openaire +3 more sources
Metagenomic Analysis of Virus Diversity and Relative Abundance in a Eutrophic Freshwater Harbour
Viruses, 2019 Aquatic viruses have been extensively studied over the past decade, yet fundamental aspects of freshwater virus communities remain poorly described. Our goal was to characterize virus communities captured in the >0.22 µm size-fraction seasonally ...
Christine N. Palermo +3 more
doaj +1 more source
Three Novel Virophage Genomes Discovered from Yellowstone Lake Metagenomes [PDF]
Journal of Virology, 2015 ABSTRACT Virophages are a unique group of circular double-stranded DNA viruses that are considered parasites of giant DNA viruses, which in turn are known to infect eukaryotic hosts. In this study, the genomes of three novel Yellowstone Lake virophages (YSLVs)—YSLV5, YSLV6, and YSLV7—were identified from Yellowstone Lake through metagenomic ...
Jinglie, Zhou +5 more
openaire +2 more sources