Results 111 to 120 of about 5,757 (229)

Chromatin is an ancient innovation conserved between Archaea and Eukarya

eLife, 2012
The eukaryotic nucleosome is the fundamental unit of chromatin, comprising a protein octamer that wraps ∼147 bp of DNA and has essential roles in DNA compaction, replication and gene expression. Nucleosomes and chromatin have historically been considered
Ron Ammar, Dax Torti, Kyle Tsui, Marinella Gebbia, Tanja Durbic, Gary D Bader, Guri Giaever, Corey Nislow   +7 more
doaj   +1 more source

Distinct Patterns of Antibiotic Sensitivities in Ammonia‐Oxidising Archaea

Environmental Microbiology, Volume 27, Issue 3, March 2025.
Antibiotic sensitivity varies between different strains of ammonia‐oxidising archaea. The results of this study will be useful for selective enrichment and development of a genetic system for ammonia‐oxidising archaea. ABSTRACT Ammonia‐oxidising archaea (AOA) are important microorganisms contributing towards the nitrogen flux in the environment. Unlike
Timothy Klein, Logan H. Hodgskiss, Max Dreer, J. Colin Murrell, Matthew I. Hutchings, Christa Schleper, Laura E. Lehtovirta‐Morley   +6 more
wiley   +1 more source

Characterisation of chlorate reduction in the haloarchaeon Haloferax mediterranei [PDF]

, 2015
Background: Haloferax mediterranei is a denitrifying haloarchaeon using nitrate as a respiratory electron acceptor under anaerobic conditions in a reaction catalysed by pNarGH.
Bonete, María-José, Martínez-Espinosa, Rosa María, Richardson, David J.   +2 more
core   +2 more sources

Chromatin and gene regulation in archaea

Molecular Microbiology, Volume 123, Issue 3, Page 218-231, March 2025.
Recent data from diverse archaea with different repertoires of nucleoid‐associated proteins show a common genome‐wide chromatin organisation where chromatin maintains access to gene promoters independently of transcription activity. Abstract The chromatinisation of DNA by nucleoid‐associated proteins (NAPs) in archaea ‘formats’ the genome structure in ...
Fabian Blombach, Finn Werner
wiley   +1 more source

Subunit Topology of Two 20S Proteasomes from Haloferax volcanii [PDF]

Journal of Bacteriology, 2003
ABSTRACT Haloferax volcanii , a halophilic archaeon, synthesizes three different proteins (α1, α2, and β) which are classified in the 20S proteasome superfamily. The α1 and β proteins alone form active 20S proteasomes; the role of α2, however, is not clear.
Steven J, Kaczowka, Julie A, Maupin-Furlow   +1 more
openaire   +2 more sources

Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes [PDF]

, 2017
The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period.
Abrevaya, Ximena Celeste, Chaffin, Michael S., Conti, Maria Josiane, Navarro, Margareth Sugano, Novoselov, Alexey A., Schneider, Jerusa, Serrano, Paloma, Silva, Dailto, Souza Filho, Carlos Roberto de   +8 more
core   +1 more source

Regulation of DNA Topology in Archaea: State of the Art and Perspectives

Molecular Microbiology, Volume 123, Issue 3, Page 245-264, March 2025.
DNA topoisomerases are ubiquitous enzymes that play a crucial role in regulating DNA supercoiling which affects fundamental biological processes involving DNA. In this review, we summarize the current understanding of regulation of supercoiling by DNA topoisomerases in the third domain of life, the Archaea, with a particular focus on three key model ...
Paul Villain, Tamara Basta
wiley   +1 more source

tRNA splicing [PDF]

, 1998
Introns interrupt the continuity of many eukaryal genes, and therefore their removal by splicing is a crucial step in gene expression. Interestingly, even within Eukarya there are at least four splicing mechanisms.
Abelson, John, Li, Hong, Trotta, Christopher R.   +2 more
core   +1 more source

HPClas: A data‐driven approach for identifying halophilic proteins based on catBoost

mLife, Volume 3, Issue 4, Page 515-526, December 2024.
Abstract Halophilic proteins possess unique structural properties and show high stability under extreme conditions. This distinct characteristic makes them invaluable for application in various aspects such as bioenergy, pharmaceuticals, environmental clean‐up, and energy production.
Shantong Hu, Xiaoyu Wang, Zhikang Wang, Menghan Jiang, Shihui Wang, Wenya Wang, Jiangning Song, Guimin Zhang   +7 more
wiley   +1 more source

Ribosome surface properties may impose limits on the nature of the cytoplasmic proteome

eLife, 2017
Much of the molecular motion in the cytoplasm is diffusive, which possibly limits the tempo of processes. We studied the dependence of protein mobility on protein surface properties and ionic strength.
Paul E Schavemaker, Wojciech M Śmigiel, Bert Poolman   +2 more
doaj   +1 more source