Engineering Archaeal Membrane-Spanning Lipid GDGT Biosynthesis in Bacteria: Implications for Early Life Membrane Transformations [PDF]
mLifeEukaryotes are hypothesized to be archaeal–bacterial chimeras. Given the different chemical structures of membrane phospholipids in archaea and bacteria, transformations of membranes during eukaryogenesis that led to the bacterial‐type membranes of ...
Zhirui Zeng, Wenbin Du, Kira Makarova
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Membrane lipid and expression responses of Saccharolobus islandicus REY15A to acid and cold stress [PDF]
Frontiers in Microbiology, 2023 Archaea adjust the number of cyclopentane rings in their glycerol dibiphytanyl glycerol tetraether (GDGT) membrane lipids as a homeostatic response to environmental stressors such as temperature, pH, and energy availability shifts.
Beverly K. Chiu +10 more
doaj +2 more sources
Frontiers in Marine Science, 2020 Over the last decade, glycerol dialkyl glycerol tetraethers (GDGTs) have become one of the most investigated lipid classes in marine and terrestrial organic geochemical research. GDGTs are microbial membrane core lipids biosynthesized as multiple homolog
Rienk H. Smittenberg, Jayne E Rattray
exaly +3 more sources
Geochemistry, Geophysics, GeosystemsRatios of glycerol dialkyl glycerol tetraethers (GDGT), which are membrane lipids of bacteria and archaea, are at the base of several paleoenvironmental proxies.
Bernhard Naafs +2 more
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Molecular Characterization of Glycerol Dialkyl Glycerol Tetraethers by High Resolution Orbitrap Mass Spectrometry [PDF]
Zhipu Xuebao, 2021 Isoprenoidal glycerol dibiphytanyl glycerol tetraethers (iso-GDGTs) and branched glycerol dialkyl glycerol tetraethers (br-GDGTs) have been widely used as biomarkers of archaea and bacteria for the investigation of paleoenvironment. The analysis of GDGTs
LI Yun-yun +6 more
doaj +1 more source
OPTiMAL: a new machine learning approach for GDGT-based palaeothermometry [PDF]
Climate of the Past, 2020 In the modern oceans, the relative abundances of glycerol dialkyl glycerol tetraether (GDGT) compounds produced by marine archaeal communities show a significant dependence on the local sea surface temperature at the site of deposition. When preserved in
T. Dunkley Jones +8 more
doaj +1 more source
Archaeal intact polar lipids in polar waters: a comparison between the Amundsen and Scotia seas [PDF]
Biogeosciences, 2021 The West Antarctic Ice Sheet (WAIS) is one of the largest potential sources of future sea-level rise, with glaciers draining the WAIS thinning at an accelerating rate over the past 40 years.
C. L. Spencer-Jones +14 more
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Geophysical Research Letters, 2023 Hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH‐GDGTs) preserved in marine sediments are thought to be controlled by sea surface temperature (SST). However, water depth may also exert a significant influence on OH‐GDGTs.
Wenjie Xiao +15 more
doaj +1 more source
Interannual and (multi-)decadal variability in the sedimentary BIT index of Lake Challa, East Africa, over the past 2200 years: assessment of the precipitation proxy [PDF]
Climate of the Past, 2016 The branched vs. isoprenoid tetraether (BIT) index is based on the relative abundance of branched tetraether lipids (brGDGTs) and the isoprenoidal GDGT crenarchaeol.
L. K. Buckles +5 more
doaj +1 more source
Mesoscale Eddy Effects on Nitrogen Cycles in the Northern South China Sea Since the Last Glacial
Frontiers in Earth Science, 2022 Archaeal ammonia oxidation is the most important intermediate pathway in regulating the oceanic nitrogen cycle; however, the study of its specific role on a geological time scale is restricted to a specific part of marginal seas; thus far, only in the ...
Miao Chen +5 more
doaj +1 more source