Results 31 to 40 of about 655,736 (160)

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, Y. L. Eley, W. Thomson, S. E. Greene, I. Mandel, I. Mandel, I. Mandel, K. Edgar, J. A. Bendle   +8 more
doaj   +1 more source

The effect of meter-scale lateral oxygen gradients at the sediment-water interface on selected organic matter based alteration, productivity and temperature proxies [PDF]

Biogeosciences, 2012
A valid assessment of selective aerobic degradation on organic matter (OM) and its impact on OM-based proxies is vital to produce accurate environmental reconstructions. However, most studies investigating these effects suffer from inherent environmental
K. A. Bogus, K. A. F. Zonneveld, D. Fischer, S. Kasten, G. Bohrmann, G. J. M. Versteegh   +5 more
doaj   +1 more source

Variation of Isoprenoid GDGTs in the Stratified Marine Water Column: Implications for GDGT-Based TEX86 Paleothermometry

Frontiers in Marine Science, 2021
Isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) derived from archaea are lipid biomarkers that exhibit high sensitivity to changes in water temperature, leading to the widespread application of the isoGDGT-based tetraether index of 86 carbon ...
Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Huamao Yuan, Huamao Yuan, Huamao Yuan, Huamao Yuan, Jinming Song, Jinming Song, Jinming Song, Jinming Song, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Jianwei Xing, Jianwei Xing, Jianwei Xing, Jianwei Xing, Qidong Wang, Qidong Wang, Qidong Wang, Qidong Wang, Xuegang Li, Xuegang Li, Xuegang Li, Xuegang Li, Liqin Duan, Liqin Duan, Liqin Duan, Liqin Duan, Ning Li, Ning Li, Ning Li, Ning Li, Yingxia Wang, Yingxia Wang, Yingxia Wang   +38 more
doaj   +1 more source

Membrane-spanning lipids for an uncompromised monitoring of membrane fusion and intermembrane lipid transfer

Journal of Lipid Research, 2015
A Förster resonance energy transfer-based fusion and transfer assay was developed to study, in model membranes, protein-mediated membrane fusion and intermembrane lipid transfer of fluorescent sphingolipid analogs.
Günter Schwarzmann, Bernadette Breiden, Konrad Sandhoff   +2 more
doaj   +1 more source

Carbon Oxidation State in Microbial Polar Lipids Suggests Adaptation to Hot Spring Temperature and Redox Gradients

Frontiers in Microbiology, 2020
The influence of oxidation-reduction (redox) potential on the expression of biomolecules is a topic of ongoing exploration in geobiology. In this study, we investigate the novel possibility that structures and compositions of lipids produced by microbial
Grayson M. Boyer, Florence Schubotz, Roger E. Summons, Jade Woods, Everett L. Shock, Everett L. Shock   +5 more
doaj   +1 more source

Synthetic Approaches to Novel Archaeal Tetraether Glycolipid Analogues^†

, 2016
Symmetrical and unsymmetrical archaeal tetraether glycolipid analogues have been prepared. The syntheses are based upon the elaboration of lipid cores from versatile chiral starting materials followed by simultaneous or sequential introduction of polar ...
Rachel Auzély-Velty (2477155), John W. Goodby (805662), Daniel Plusquellec (2483935), Thierry Benvegnu (1757260), Grégory Lecollinet (3046911), Grahame Mackenzie (2728864), Mathieu Danel (1528774)   +6 more
core   +2 more sources

Crenarchaeol

Journal of Lipid Research, 2002
The basic structure and stereochemistry of the characteristic glycerol dibiphytanyl glycerol tetraether (GDGT) membrane lipid of cosmopolitan pelagic crenarchaeota has been identified by high field two-dimensional (2D)-NMR techniques.
Jaap S.Sinninghe Damsté, Stefan Schouten, Ellen C. Hopmans, Adri C.T. van Duin, Jan A.J. Geenevasen   +4 more
doaj   +1 more source

Benthic archaea as potential sources of tetraether membrane lipids in sediments across an oxygen minimum zone [PDF]

Biogeosciences, 2018
Benthic archaea comprise a significant part of the total prokaryotic biomass in marine sediments. Recent genomic surveys suggest they are largely involved in anaerobic processing of organic matter, but the distribution and abundance of these archaeal ...
M. A. Besseling, E. C. Hopmans, R. C. Boschman, J. S. Sinninghe Damsté, J. S. Sinninghe Damsté, L. Villanueva   +5 more
doaj   +1 more source

Enantioselective Total Synthesis of the Archaeal Lipid Parallel GDGT-0 [PDF]

, 2021
Archaeal glycerol dibiphytanyl glycerol tetraethers (GDGT) are some of the most unusual membrane lipids identified in nature. These amphiphiles are the major constituents of the membranes of numerous Archaea, some of which are extremophilic organisms ...
Isaac D., Falk, Bálint, Gál, Paula V., Welander, Ahanjit, Bhattacharya, Jeremy H., Wei, Steven, Boxer, Noah, Burns   +6 more
core   +2 more sources

Archaeol to tetraether ratio of M. Thermoautotrophicus

, 2018
Archaeol to tetraether ratio of M ...
Könneke, Martin, Evans, Thomas W, Elvert, Marcus, Martin Könneke (6978479), Kai-Uwe Hinrichs (6960101), Heidi Taubner (7578335), Lipp, Julius S, Taubner, Heidi, Julius S Lipp (6977507), Hinrichs, Kai-Uwe, Rishi Ram Adhikari (7578332), Marcus Elvert (6979217), Thomas W Evans (7578329), Adhikari, Rishi Ram   +13 more
core   +1 more source