Results 51 to 60 of about 174,264 (291)

Transcription in Archaea [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
Using the sequences of all the known transcription-associated proteins from Bacteria and Eucarya (a total of 4,147), we have identified their homologous counterparts in the four complete archaeal genomes. Through extensive sequence comparisons, we establish the presence of 280 predicted transcription factors or transcription-associated ...
N C, Kyrpides, C A, Ouzounis
openaire   +2 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Structure and in situ organisation of the Pyrococcus furiosus archaellum machinery

open access: yeseLife, 2017
The archaellum is the macromolecular machinery that Archaea use for propulsion or surface adhesion, enabling them to proliferate and invade new territories.
Bertram Daum   +7 more
doaj   +1 more source

Taxis in archaea [PDF]

open access: yesEmerging Topics in Life Sciences, 2018
Microorganisms can move towards favorable growth conditions as a response to environmental stimuli. This process requires a motility structure and a system to direct the movement. For swimming motility, archaea employ a rotating filament, the archaellum.
Tessa E.F. Quax   +2 more
openaire   +4 more sources

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Analysis of Cell–Cell Bridges in Haloferax volcanii Using Electron Cryo-Tomography Reveal a Continuous Cytoplasm and S-Layer

open access: yesFrontiers in Microbiology, 2021
Halophilic archaea have been proposed to exchange DNA and proteins using a fusion-based mating mechanism. Scanning electron microscopy previously suggested that mating involves an intermediate state, where cells are connected by an intercellular bridge ...
Shamphavi Sivabalasarma   +7 more
doaj   +1 more source

Osmoadaptation in Archaea [PDF]

open access: yesApplied and Environmental Microbiology, 1999
The ability to adapt to fluctuations in external osmotic pressure (osmoadaptation) and the development of specific mechanisms to achieve this (osmoregulation) are fundamental to the survival of cells ([6][1], [16][2], [67][3], [73][4], [76][5]).
, Martin, , Ciulla, , Roberts
openaire   +2 more sources

Membrane Vesicles from Lacticaseibacillus Casei BL23 Exhibit Antimicrobial Activity Against Escherichia coli and Immunostimulatory Effects on Human Peripheral Blood Mononuclear Cells

open access: yesAdvanced Healthcare Materials, EarlyView.
Membrane vesicles derived from the probiotic Lacticaseibacillus casei BL23 demonstrate antimicrobial properties against Escherichia coli and a potential biological effect in improving the overall survival of C. elegans infected with Pseudomonas aeruginosa. These vesicles stimulated immune responses in primary cells without causing toxicity. Our results
Cecilia L. D'Antoni   +11 more
wiley   +1 more source

CRISPR-mediated gene silencing reveals involvement of the archaeal S-layer in cell division and virus infection

open access: yesNature Communications, 2019
The S-layer is a proteinaceous envelope often found in bacterial and archaeal cells. Here, the authors use CRISPR-based technology to silence slaB, encoding the S-layer membrane anchor, to show that an intact S-layer is important for cell division and ...
Isabelle Anna Zink   +5 more
doaj   +1 more source

Influence of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica [PDF]

open access: yes, 2014
Archaea are the least understood members of the microbial community in Antarctic mineral soils. Although their occurrence in Antarctic coastal soils has been previously documented, little is known about their distribution in soils across the McMurdo Dry ...
Barrett, John E.   +5 more
core   +2 more sources

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