Results 71 to 80 of about 2,427 (150)

Identification of acetylated diether lipids in halophilic Archaea

open access: yesMicrobiologyOpen, 2022
As a hallmark of Archaea, their cell membranes are comprised of ether lipids. However, Archaea‐type ether lipids have recently been identified in Bacteria as well, with a somewhat different composition: In Bacillales, sn‐glycerol 1‐phosphate is ...
Cosimo Kropp   +6 more
doaj   +1 more source

Differential Expression of Core Metabolic Functions in Candidatus Altiarchaeum Inhabiting Distinct Subsurface Ecosystems

open access: yesEnvironmental Microbiology Reports, Volume 17, Issue 3, June 2025.
Major differences between Candidatus Altiarchaeum species living in two distinct subsurface ecosystems as determined via metatranscriptomics. Genes overly expressed in different Ca. Altiarchaea in Muehlbacher sufidic spring (magenta; MSI; Regensburg, Germany) and Crystal Geyser (turquise; CG; Utah, USA). Ca.
Sarah P. Esser   +9 more
wiley   +1 more source

Phosphorylation and Methylation of Proteasomal Proteins of the HaloarcheonHaloferax volcanii

open access: yesArchaea, 2010
Proteasomes are composed of 20S core particles (CPs) ofα- andβ-type subunits that associate with regulatory particle AAA ATPases such as the proteasome-activating nucleotidase (PAN) complexes of archaea. In this study, the roles and additional sites of post-translational modification of proteasomes were investigated using the archaeonHaloferax ...
Humbard, Matthew A.   +4 more
openaire   +2 more sources

Non‐conserved microRNAs and their roles in plants: the case for legumes

open access: yesPlant Biology, Volume 27, Issue 4, Page 450-460, June 2025.
Non‐conserved miRNAs are functional and modulate stress and microbial interactions in legumes, hinting at broader roles in plant gene regulation. Abstract Several classes of small RNAs function to regulate stress and development pathways in all kingdoms of life.
Y. Hernández   +3 more
wiley   +1 more source

How Small Proteins Adjust the Metabolism of Cyanobacteria Under Stress

open access: yesBioEssays, Volume 47, Issue 3, March 2025.
Cyanobacteria are powered by oxygenic photosynthesis located in extensive internal membrane systems, the thylakoids. Using carboxysomes, they assimilate organic from inorganic carbon. The integration of photosynthesis, carbon fixation, assimilation of nitrogen, and other nutrients involves several small proteins.
Alexander Kraus, Wolfgang R. Hess
wiley   +1 more source

Distinct Patterns of Antibiotic Sensitivities in Ammonia‐Oxidising Archaea

open access: yesEnvironmental 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   +6 more
wiley   +1 more source

DNA replication origins in Haloferax volcanii [PDF]

open access: yes, 2009
DNA replication is fundamental to the proliferation of life. Sites of DNA replication initiation are called replication origins. Bacteria replicate from a single origin whereas eukaryotes utilise multiple origins for each chromosome. The archaeal domain includes species which replicate using multiple origins of replication in addition to those which ...
openaire   +2 more sources

Overexpression and purification of halophilic proteins inHaloferax volcanii [PDF]

open access: yesBioengineered Bugs, 2010
Halophilic enzymes function optimally at high salt concentrations and are active at low water availability. Such conditions are encountered at elevated concentrations of solutes such as salts and sugars, and at high concentrations of organic solvents.
openaire   +2 more sources

Chromatin and gene regulation in archaea

open access: yesMolecular 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

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

open access: yesMolecular 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

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