Academic literature on the topic 'Glycerol-based ether lipids'

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Journal articles on the topic "Glycerol-based ether lipids"

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Liu, Xiao-Lei, Roger E. Summons, and Kai-Uwe Hinrichs. "Extending the known range of glycerol ether lipids in the environment: structural assignments based on tandem mass spectral fragmentation patterns." Rapid Communications in Mass Spectrometry 26 (September 4, 2012): 2295–302. https://doi.org/10.1002/rcm.6355.

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RATIONALE: Glycerol-based alkyl ether lipids are ubiquitous components in marine sediments. In order to explore their structural diversity and biological sources, marine sediment samples from diverse environments were analyzed and the mass spectra of widely distributed, novel glycerol di- and tetraethers were examined systematically. METHODS: Lipid extracts of twelve globally distributed marine subsurface sediments were analyzed by atmospheric pressure chemical ionization mass spectrometry (APCI-MS). Tandem mass (MS/MS) spectra of compounds were obtained with a quadrupole time-of-flight (qTOF)
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Liu, Xiao-Lei, Julius S. Lipp, Jan M. Schröder, Roger E. Summons, and Kai-Uwe Hinrichs. "Isoprenoid glycerol dialkanol diethers: a series of novel archaeal lipids in marine sediments." Organic Geochemistry 43 (November 17, 2011): 50–55. https://doi.org/10.1016/j.orggeochem.2011.11.002.

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Abstract We report a new series of archaeal lipids, widespread in marine sediments and tentatively assigned as isoprenoid glycerol dialkanol diethers (GDDs). They are structural analogs of isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs), with one glycerol unit missing and with each biphytanyl moiety possessing a terminal OH group. Identification is based on molecular formulae determined from accurate mass measurement and interpretation of mass spectral fragmentation patterns. Acetylation of GDD-0 confirmed the presence of three OH groups, and ether cleavage and reduction of the produc
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Zhu, Chun, Travis B. Meador, Wolf Dummann, and Kai-Uwe Hinrichs. "Identification of unusual butanetriol dialkyl glycerol tetraether and pentanetriol dialkyl glycerol tetraether lipids in marine sediments." Rapid Communications in Mass Spectrometry 28 (December 27, 2013): 332–38. https://doi.org/10.1002/rcm.6792.

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RATIONALE: Glycerol serves as the principal backbone moiety bound to various acyl/alkyl chains for membrane lipids of <em>Eukarya</em>, <em>Bacteria</em>, and <em>Archaea</em>. In this study, we report a suite of unusual tetraether lipids in which one of the two conventional glycerol backbones is substituted by butanetriol or pentanetriol. METHODS: Identification of these lipids was achieved via diagnostic fragments and their expected acetylation products using liquid chromatography/mass spectrometry (LC/MS), and their diagnostic ether cleavage products using gas chromatography/mass spectromet
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Li, Tuo, Youyi Luo, Changhong Liu, Xuan Lu, and Baomin Feng. "Archaeal Lipids: Extraction, Separation, and Identification via Natural Product Chemistry Perspective." International Journal of Molecular Sciences 26, no. 7 (2025): 3167. https://doi.org/10.3390/ijms26073167.

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Archaeal lipids, defining a primordial life domain alongside Bacteria and Eukarya, are distinguished by their unique glycerol-1-phosphate backbone and ether-linked isoprenoid chains. Serving as critical geochemical biomarkers, archaeal lipids like glycerol dialkyl glycerol tetraethers (GDGTs) underpin paleoclimate proxies, while their phylum-specific distributions illuminate phylogenetic divergence. Despite the maturity of Mass Spectrometry-based quantitative biomarkers—predominantly those with established structures—becoming well-established in geochemical research, systematic investigation o
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Sigurjónsson, Svanur, and Gudmundur G. Haraldsson. "Asymmetric Synthesis of Methoxylated Ether Lipids: Total Synthesis of Polyunsaturated C18:3 Omega-3 and Omega-6 MEL Triene Derivatives." Molecules 29, no. 1 (2023): 223. http://dx.doi.org/10.3390/molecules29010223.

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The asymmetric synthesis of polyunsaturated triene C18:3 n-3 and C18:3 n-6 methoxylated ether lipids (MEL) of the 1-O-alkyl-sn-glycerol type is described as possible structural candidates for a triene C18:3 MEL of an unknown identity found in a mixture of shark and dogfish liver oil. Their C18:3 hydrocarbon chains constitute an all-cis methylene skipped n-3 or n-6 triene framework, along with a methoxyl group at the 2′-position and R-configuration of the resulting stereogenic center. The methoxylated polyenes are attached by an ether linkage to the pro-S hydroxymethyl group of the glycerol bac
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Łapińska, Urszula, Georgina Glover, Zehra Kahveci, et al. "Systematic comparison of unilamellar vesicles reveals that archaeal core lipid membranes are more permeable than bacterial membranes." PLOS Biology 21, no. 4 (2023): e3002048. http://dx.doi.org/10.1371/journal.pbio.3002048.

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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. This dichotomy has been termed the lipid divide and possibly bestows different biophysical and biochemical characteristics on each cell type. Classic experiments suggest that bacterial membranes (formed from lipids extracted from Escherichia coli, for example) show permeability to key metabolites comparable to archaeal membranes (formed from lipids extracted from Halobacterium salinarum
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Rao, Alka, Niels A. W. de Kok, and Arnold J. M. Driessen. "Membrane Adaptations and Cellular Responses of Sulfolobus acidocaldarius to the Allylamine Terbinafine." International Journal of Molecular Sciences 24, no. 8 (2023): 7328. http://dx.doi.org/10.3390/ijms24087328.

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Cellular membranes are essential for compartmentalization, maintenance of permeability, and fluidity in all three domains of life. Archaea belong to the third domain of life and have a distinct phospholipid composition. Membrane lipids of archaea are ether-linked molecules, specifically bilayer-forming dialkyl glycerol diethers (DGDs) and monolayer-forming glycerol dialkyl glycerol tetraethers (GDGTs). The antifungal allylamine terbinafine has been proposed as an inhibitor of GDGT biosynthesis in archaea based on radiolabel incorporation studies. The exact target(s) and mechanism of action of
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Liu, Xiao-Lei, Roger E. Summons, and Kai-Uwe Hinrichs. "Extending the known range of glycerol ether lipids in the environment: structural assignments based on tandem mass spectral fragmentation patterns." Rapid Communications in Mass Spectrometry 26, no. 19 (2012): 2295–302. http://dx.doi.org/10.1002/rcm.6355.

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Weijers, J. W. H., G. L. B. Wiesenberg, R. Bol, E. C. Hopmans, and R. D. Pancost. "Carbon isotopic composition of branched tetraether membrane lipids in soils suggest a rapid turnover and a heterotrophic life style of their source organism(s)." Biogeosciences Discussions 7, no. 3 (2010): 3691–734. http://dx.doi.org/10.5194/bgd-7-3691-2010.

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Abstract. Branched Glycerol Dialkyl Glycerol Tetraethers (GDGTs) are membrane spanning lipids synthesised by as yet unknown bacteria that thrive in soils and peat. In order to obtain more information on their ecological niche, the stable carbon isotopic composition of branched GDGT-derived alkanes, obtained upon ether bond cleavage, has been determined in various soils, i.e. peat, forest, grassland and cropland, covered by various vegetation types, i.e., C3- vs. C4-plant type. These δ13C values are compared with those of bulk organic matter and higher plant derived n-alkanes from the same soil
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Weijers, J. W. H., G. L. B. Wiesenberg, R. Bol, E. C. Hopmans, and R. D. Pancost. "Carbon isotopic composition of branched tetraether membrane lipids in soils suggest a rapid turnover and a heterotrophic life style of their source organism(s)." Biogeosciences 7, no. 9 (2010): 2959–73. http://dx.doi.org/10.5194/bg-7-2959-2010.

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Abstract. Branched Glycerol Dialkyl Glycerol Tetraethers (GDGTs) are membrane spanning lipids synthesised by as yet unknown bacteria that thrive in soils and peat. In order to obtain more information on their ecological niche, the stable carbon isotopic composition of branched GDGT-derived alkanes, obtained upon ether bond cleavage, has been determined in a peat and various soils, i.e. forest, grassland and cropland, covered by various vegetation types, i.e., C3- vs. C4-plant type. These δ13C values are compared with those of bulk organic matter and higher plant derived n-alkanes from the same
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Book chapters on the topic "Glycerol-based ether lipids"

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Bianchi, Thomas S., and Elizabeth A. Canuel. "Lipids: Alkenones, Polar Lipids, and Ether Lipids." In Chemical Biomarkers in Aquatic Ecosystems. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691134147.003.0011.

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This chapter focuses on several classes of polar lipids, including alkenones, which are di-, tri-, and tetra-unsaturated long-chain ketones. These compounds are produced by a restricted number of species of prymnesiophyte algae (coccolithophorid alga Emiliania huxleyi), living over a wide temperature range. Prymnesiophytes are able to live under different temperature regimes because they are able to regulate the degree of unsaturation of these compounds; as ambient water temperature decreases, unsaturation increases. Long-chain ketones are more stable than most unsaturated lipids and can survi
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