Results 71 to 80 of about 1,209 (144)

Genes for Membrane Transport Proteins: Not So Rare in Viruses

Viruses, 2018
Some viruses have genes encoding proteins with membrane transport functions. It is unknown if these types of proteins are rare or are common in viruses.
Timo Greiner, Anna Moroni, James L Van Etten, Gerhard Thiel   +3 more
doaj   +1 more source

Transition metals and oxidation reactions trigger stargate opening during the initial stages of the replicative cycle of the giant Tupanvirus

mBio
Tupanviruses, members of the family Mimiviridae, infect phagocytic cells. Particle uncoating begins inside the phagosome, with capsid opening via the stargate. The mechanism through which this opening takes place is unknown.
Juliana R. Cortines, Charles M. Bridges, Sundharraman Subramanian, Jason R. Schrad, Glauber R. S. Araújo, Gabriel Henrique Pereira Nunes, Juliana dos Santos Oliveira, Victor Alejandro Essus, Jônatas S. Abrahão, Simon White, Kristin N. Parent, Carolyn Teschke   +11 more
doaj   +1 more source

Niemeyer virus: a new mimivirus group A isolate harboring a set of duplicated aminoacyl-tRNA synthetase genes

Frontiers in Microbiology, 2015
It is well recognized that gene duplication/acquisition is a key factor for molecular evolution, being directly related to the emergence of new genetic variants.
Paulo eBoratto, Thalita eArantes, Lorena eSilva, Felipe eAssis, Erna eKroon, Bernard eLa Scola, Jonatas eAbrahao   +6 more
doaj   +1 more source

Ubiquitous giants: a plethora of giant viruses found in Brazil and Antarctica

Virology Journal, 2018
Background Since the discovery of giant viruses infecting amoebae in 2003, many dogmas of virology have been revised and the search for these viruses has been intensified.
Ana Cláudia dos S. P. Andrade, Thalita S. Arantes, Rodrigo A. L. Rodrigues, Talita B. Machado, Fábio P. Dornas, Melissa F. Landell, Cinthia Furst, Luiz G. A. Borges, Lara A. L. Dutra, Gabriel Almeida, Giliane de S. Trindade, Ivan Bergier, Walter Abrahão, Iara A. Borges, Juliana R. Cortines, Danilo B. de Oliveira, Erna G. Kroon, Jônatas S. Abrahão   +17 more
doaj   +1 more source

A Brazilian Marseillevirus Is the Founding Member of a Lineage in Family Marseilleviridae

Viruses, 2016
In 2003, Acanthamoeba polyphaga mimivirus (APMV) was discovered as parasitizing Acanthamoeba. It was revealed to exhibit remarkable features, especially odd genomic characteristics, and founded viral family Mimiviridae.
Fábio P. Dornas, Felipe L. Assis, Sarah Aherfi, Thalita Arantes, Jônatas S. Abrahão, Philippe Colson, Bernard La Scola   +6 more
doaj   +1 more source

Metagenomic detection of Mimiviridae reads in upper respiratory tract samples of SARS-CoV-2 patients

Abstract The upper respiratory tract (URT) virome is crucial in respiratory health and response to pathogens. While common respiratory viruses are well-studied, the presence and potential impact of giant DNA viruses, such as Mimiviridae, in the human URT remain underexplored.
Siddharth Singh Tomar, Krishna Khairnar
openaire   +1 more source

Megavirus baoshanense Mb0671 modulates host translation and increases viral fitness

Frontiers in Microbiology
Amoeba giant viruses encode many translation-related proteins, but the function of these proteins remains obscure. In the current work, we studied the potential eukaryotic translation initiation factor 4A (eIF4A, Mb0671) encoded by Megavirus baoshanense,
Wenya Bian, Jie Yang, Yucheng Xia, Yun Li, Yanjin Cheng, Yuchen Wu, Jianhua Gan, Jiang Zhong   +7 more
doaj   +1 more source

Taxonomic update for giant viruses in the order Imitervirales (phylum Nucleocytoviricota). [PDF]

Arch Virol, 2023
Aylward FO, Abrahão JS, Brussaard CPD, Fischer MG, Moniruzzaman M, Ogata H, Suttle CA.   +6 more
europepmc   +1 more source

Lateral Gene Transfer Between Protozoa-Related Giant Viruses of Family Mimiviridae and Chlamydiae

Lateral Gene Transfer Between Protozoa-Related Giant Viruses of Family Mimiviridae and Chlamydiae
Obligate intracellular chlamydiae diverged into pathogenic and environmental chlamydiae 0.7-1.4 billion years ago. While pathogenic chlamydiae have adapted to a wide range of vertebrates, environmental chlamydiae inhabit unicellular amoebae, the free-living Acanthamoeba. However, how and why this divergence occurred remains unclear.
openaire  

Mimivirus-like Particles in Acanthamoebae from Sewage Sludge

Emerging Infectious Diseases, 2011
William H. Gaze, Gina Morgan, Lihong Zhang, Elizabeth M.H. Wellington   +3 more
doaj   +1 more source