Results 31 to 40 of about 3,900 (194)

Planktonic Archaeal Ether Lipid Origins in Surface Waters of the North Pacific Subtropical Gyre

open access: yesFrontiers in Microbiology, 2021
Thaumarchaeota and Thermoplasmatota are the most abundant planktonic archaea in the sea. Thaumarchaeota contain tetraether lipids as their major membrane lipids, but the lipid composition of uncultured planktonic Thermoplasmatota representatives remains ...
Fuyan Li   +5 more
doaj   +1 more source

Are Marine Group II Euryarchaeota significant contributors to tetraether lipids in the ocean? [PDF]

open access: yesProc Natl Acad Sci U S A, 2014
The first line of evidence is the presence of GDGTs, including crenarchaeol, in suspended particulate matter (SPM) at 83 m, the archaeal community of which is nearly exclusively composed of MG-II (>94% of archaeal reads) (table 1 in ref. 1) as determined
Schouten S   +4 more
europepmc   +2 more sources

Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 83-102., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
David P. G. Bond, Yadong Sun
wiley  

+1 more source

Discovery, structure and mechanism of a tetraether lipid synthase

open access: yesNature, 2022
Abstract Archaea synthesize isoprenoid-based ether-linked membrane lipids, which enable them to withstand extreme environmental conditions, such as high temperatures, high salinity, and low or high pH values 1–5 .
Cody T. Lloyd   +6 more
openaire   +2 more sources

The influence of near-surface sediment hydrothermalism on the TEX86 tetraether-lipid-based proxy and a new correction for ocean bottom lipid overprinting [PDF]

open access: yesBiogeosciences, 2022
The diversity and relative abundances of tetraether lipids produced by archaea and bacteria in soils and sediments are increasingly used to assess environmental change.
J. N. Bentley   +4 more
doaj   +1 more source

Transport of branched tetraether lipids from the Tagus River basin to the coastal ocean of the Portuguese margin: consequences for the interpretation of the MBT’/CBT paleothermometer [PDF]

open access: yes, 2014
Branched glycerol dialkyl glycerol tetraethers (brGDGTs), which are transported from soil to marine sediment by rivers, have been used to reconstruct the mean annual air temperature (MAAT) and soil pH of the drainage basin using the methylation index of ...
Baas, M.   +6 more
core   +13 more sources

Functionalized Membrane Domains: An Ancestral Feature of Archaea?

open access: yesFrontiers in Microbiology, 2020
Bacteria and Eukarya organize their plasma membrane spatially into domains of distinct functions. Due to the uniqueness of their lipids, membrane functionalization in Archaea remains a debated area. A novel membrane ultrastructure predicts that monolayer
Maxime Tourte   +3 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

Asian Winter Monsoon Imprint on the Water Column Structure at the Northern South China Sea Coast

open access: yesFrontiers in Earth Science, 2021
Coastal regions of the northern South China Sea (SCS) strongly interact with the Asian monsoon circulation (AMC). Thus, variations of sea surface temperature (SST) here are newly suggested to document AMC changes in an effective manner, but additional ...
Yancheng Zhang   +11 more
doaj   +1 more source

Molecular Dynamics Study of Bipolar Tetraether Lipid Membranes [PDF]

open access: yesBiophysical Journal, 2005
Membranes composed of bipolar tetraether lipids have been studied by a series of 25-ns molecular dynamics simulations to understand the microscopic structure and dynamics as well as membrane area elasticity. By comparing macrocyclic and acyclic tetraether and diether archaeal lipids, the effect of tail linkage of the two phytanyl-chained lipids on the ...
Shinoda, Wataru   +3 more
openaire   +2 more sources

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