Results 31 to 40 of about 112,166 (340)

A Genus Definition for Bacteria and Archaea Based on a Standard Genome Relatedness Index

mBio, 2020
In recent decades, the taxonomy of Bacteria and Archaea, and therefore genus designation, has been largely based on the use of a single ribosomal gene, the 16S rRNA gene, as a taxonomic marker. We propose an approach to delineate genera that excludes the
R. Barco, R. Barco, George M. Garrity, J. Scott, J. Amend, K. Nealson, David Emerson   +6 more
semanticscholar   +1 more source

Metagenomes from Coastal Marine Sediments Give Insights into the Ecological Role and Cellular Features of Loki- and Thorarchaeota

mBio, 2019
The genomes of Asgard Archaea, a novel archaeal proposed superphylum, share an enriched repertoire of eukaryotic signature genes and thus promise to provide insights into early eukaryote evolution.
Lokeshwaran Manoharan, Jessica A. Kozlowski, Robert W. Murdoch, Frank E. Löffler, Filipa L. Sousa, Christa Schleper   +5 more
doaj   +1 more source

Single-molecule FRET uncovers hidden conformations and dynamics of human Argonaute 2

Nature Communications, 2022
Single-molecule FRET measurements provide detailed insights into the conformational states and dynamics of human Argonaute 2 that are required for its function at the core of the eukaryotic RNA silencing pathway.
Sarah Willkomm, Leonhard Jakob, Kevin Kramm, Veronika Graus, Julia Neumeier, Gunter Meister, Dina Grohmann   +6 more
doaj   +1 more source

CRISPR-Cas Adaptive Immune Systems of the Sulfolobales: Unravelling Their Complexity and Diversity

Life, 2015
The Sulfolobales have provided good model organisms for studying CRISPR-Cas systems of the crenarchaeal kingdom of the archaea. These organisms are infected by a wide range of exceptional archaea-specific viruses and conjugative plasmids, and their ...
Roger A. Garrett, Shiraz A. Shah, Susanne Erdmann, Guannan Liu, Marzieh Mousaei, Carlos León-Sobrino, Wenfang Peng, Soley Gudbergsdottir, Ling Deng, Gisle Vestergaard, Xu Peng, Qunxin She   +11 more
doaj   +1 more source

Minimum information about a single amplified genome (MISAG) and a metagenome-assembled genome (MIMAG) of bacteria and archaea

Nature Biotechnology, 2017
We present two standards developed by the Genomic Standards Consortium (GSC) for reporting bacterial and archaeal genome sequences. Both are extensions of the Minimum Information about Any (x) Sequence (MIxS).
R. M. Bowers, N. Kyrpides, R. Stepanauskas, Miranda Harmon-Smith, Devin F R Doud, T. Reddy, Frederik Schulz, J. Jarett, A. Rivers, E. Eloe-Fadrosh, S. Tringe, Natalia N. Ivanova, A. Copeland, Alicia Clum, Eric D. Becraft, R. Malmstrom, B. Birren, M. Podar, P. Bork, G. Weinstock, G. Garrity, J. Dodsworth, Shibu Yooseph, G. Sutton, F. O. Gloeckner, J. Gilbert, W. Nelson, S. Hallam, S. Jungbluth, Thijs J. G. Ettema, S. Tighe, K. Konstantinidis, Wen-Tso Liu, B. Baker, T. Rattei, J. Eisen, B. Hedlund, K. McMahon, N. Fierer, R. Knight, R. Finn, G. Cochrane, I. Karsch-Mizrachi, G. Tyson, Christian Rinke, A. Lapidus, Folker Meyer, Pelin Yilmaz, Donovan H. Parks, A. M. Eren, L. Schriml, J. Banfield, P. Hugenholtz, T. Woyke   +53 more
semanticscholar   +1 more source

The transcriptional regulator EarA and intergenic terminator sequences modulate archaellation in Pyrococcus furiosus

Frontiers in Microbiology, 2023
The regulation of archaellation, the formation of archaeal-specific cell appendages called archaella, is crucial for the motility, adhesion, and survival of archaeal organisms.
Richard Stöckl, Laura Nißl, Robert Reichelt, Reinhard Rachel, Dina Grohmann, Felix Grünberger   +5 more
doaj   +1 more source

Anti-CRISPR-Based and CRISPR-Based Genome Editing of Sulfolobus islandicus Rod-Shaped Virus 2

Viruses, 2018
Genetic engineering of viruses has generally been challenging. This is also true for archaeal rod-shaped viruses, which carry linear double-stranded DNA genomes with hairpin ends.
David Mayo-Muñoz, Fei He, Jacob Bruun Jørgensen, Poul Kári Madsen, Yuvaraj Bhoobalan-Chitty, Xu Peng   +5 more
doaj   +1 more source

Enzymatic Switching Between Archaeal DNA Polymerases Facilitates Abasic Site Bypass

Frontiers in Microbiology, 2021
Abasic sites are among the most abundant DNA lesions encountered by cells. Their replication requires actions of specialized DNA polymerases. Herein, two archaeal specialized DNA polymerases were examined for their capability to perform translesion DNA ...
Xu Feng, Baochang Zhang, Ruyi Xu, Zhe Gao, Xiaotong Liu, Guanhua Yuan, Sonoko Ishino, Mingxia Feng, Yulong Shen, Yoshizumi Ishino, Qunxin She   +10 more
doaj   +1 more source

Putative Nucleotide-Based Second Messengers in the Archaeal Model Organisms Haloferax volcanii and Sulfolobus acidocaldarius

Frontiers in Microbiology, 2021
Research on nucleotide-based second messengers began in 1956 with the discovery of cyclic adenosine monophosphate (3′,5′-cAMP) by Earl Wilbur Sutherland and his co-workers.
Frank Braun, Alejandra Recalde, Heike Bähre, Roland Seifert, Sonja-Verena Albers   +4 more
doaj   +1 more source

Ancestral Reconstructions Decipher Major Adaptations of Ammonia-Oxidizing Archaea upon Radiation into Moderate Terrestrial and Marine Environments

mBio, 2020
Unlike all other archaeal lineages, ammonia-oxidizing archaea (AOA) of the phylum Thaumarchaeota are widespread and abundant in all moderate and oxic environments on Earth. The evolutionary adaptations that led to such unprecedented ecological success of
Sophie S. Abby, Melina Kerou, Christa Schleper   +2 more
doaj   +1 more source