Results 51 to 60 of about 252,711 (203)

Apolar Polyisoprenoids Located in the Midplane of the Bilayer Regulate the Response of an Archaeal-Like Membrane to High Temperature and Pressure

open access: yesFrontiers in Chemistry, 2020
Archaea are known to inhabit some of the most extreme environments on Earth. The ability of archaea possessing membrane bilayers to adapt to high temperature (>85°C) and high pressure (>1,000 bar) environments is proposed to be due to the presence ...
Josephine G. LoRicco   +5 more
doaj   +1 more source

Crystal structure of Escherichia coli-expressed Haloarcula marismortui bacteriorhodopsin I in the trimeric form. [PDF]

open access: yesPLoS ONE, 2014
Bacteriorhodopsins are a large family of seven-helical transmembrane proteins that function as light-driven proton pumps. Here, we present the crystal structure of a new member of the family, Haloarcula marismortui bacteriorhodopsin I (HmBRI) D94N mutant,
Vitaly Shevchenko   +9 more
doaj   +1 more source

Nitrosopumilus as main source of isoprenoid glycerol dialkyl glycerol tetraether lipids in the central Baltic Sea

open access: yesFrontiers in Microbiology, 2023
Nitrososphaeria in the phylum Crenarchaeota, is a widespread archaeal class in the oceanic realm, playing an important role in the marine carbon and nitrogen cycle.
Anna Katharina Wittenborn   +7 more
doaj   +1 more source

Systematic comparison of unilamellar vesicles reveals that archaeal core lipid membranes are more permeable than bacterial membranes.

open access: yesPLoS Biology, 2023
One of the deepest branches in the tree of life separates the Archaea from the Bacteria. These prokaryotic groups have distinct cellular systems including fundamentally different phospholipid membrane bilayers.
Urszula Łapińska   +9 more
doaj   +1 more source

Archaeosomes and Gas Vesicles as Tools for Vaccine Development

open access: yesFrontiers in Immunology, 2021
Archaea are prokaryotic organisms that were classified as a new domain in 1990. Archaeal cellular components and metabolites have found various applications in the pharmaceutical industry.
Natalia Adamiak   +4 more
doaj   +1 more source

Thermal Adaptation of the Archaeal and Bacterial Lipid Membranes [PDF]

open access: yesArchaea, 2012
The physiological characteristics that distinguish archaeal and bacterial lipids, as well as those that define thermophilic lipids, are discussed from three points of view that (1) the role of the chemical stability of lipids in the heat tolerance of thermophilic organisms: (2) the relevance of the increase in the proportion of certain lipids as the ...
openaire   +2 more sources

Archaeal lipostratigraphy of the Scotian Slope shallow sediments, Atlantic Canada [PDF]

open access: yesBiogeosciences
The Scotian Slope in the North Atlantic Ocean extends for ∼ 500 km along the coast of Nova Scotia, Canada. Its surface sediments host microbial communities, which respond to complex geochemical drivers that not only include communication with the ...
N. Ahangarian   +10 more
doaj   +1 more source

First Isolation and Structure Elucidation of GDNT‐β‐Glu – Tetraether Lipid Fragment from Archaeal Sulfolobus Strains

open access: yesChemistryOpen, 2021
Due to their special chemical structure, tetraether lipids (TEL) represent essential elements of archaeal membranes, providing these organisms with extraordinary properties.
Dr. Alexander Scholte   +7 more
doaj   +1 more source

A membrane-spanning macrocyclic bolaamphiphile lipid mimic of archaeal lipids [PDF]

open access: yesCanadian Journal of Chemistry, 2017
The synthesis of a 72-membered macrocyclic tetraester bolaamphiphile is accomplished in six chemical steps from commercially available starting materials using copper-accelerated azide–alkyne coupling to close the macrocycle in high yield. Related diester amphiphiles and an acyclic tetraester bolaamphiphile were also prepared.
Mitchell, Gavin Maxwell   +4 more
openaire   +1 more source

Archaeal lipid concentration and isotopic data in sediments from expeditions M84/1 and POS450

open access: yes, 2021
Archaea occupy an important niche in the global carbon cycle and their lipids are widely used as indicators of environmental conditions in both paleoenvironmental and modern biogeochemical studies.
Elvert, Marcus   +5 more
core   +1 more source

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