Relevant bibliographies by topics / Bacterial alkyl glycerol tetraethers

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Academic literature on the topic 'Bacterial alkyl glycerol tetraethers'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Bacterial alkyl glycerol tetraethers"

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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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Becker, Kevin W., Felix J. Elling, Marcos Y. Yoshinaga, Andrea Söllinger, Tim Urich, and Kai-Uwe Hinrichs. "Unusual Butane- and Pentanetriol-Based Tetraether Lipids in Methanomassiliicoccus luminyensis, a Representative of the Seventh Order of Methanogens." Applied and Environmental Microbiology 82, no. 15 (2016): 4505–16. http://dx.doi.org/10.1128/aem.00772-16.

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ABSTRACTA new clade of archaea has recently been proposed to constitute the seventh methanogenic order, theMethanomassiliicoccales, which is related to theThermoplasmatalesand the uncultivated archaeal clades deep-sea hydrothermal ventEuryarchaeotagroup 2 and marine group IIEuryarchaeotabut only distantly related to other methanogens. In this study, we investigated the membrane lipid composition ofMethanomassiliicoccus luminyensis, the sole cultured representative of this seventh order. The lipid inventory ofM. luminyensiscomprises a unique assemblage of novel lipids as well as lipids otherwis
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Sinninghe Damsté, Jaap S., W. Irene C. Rijpstra, Ellen C. Hopmans, et al. "13,16-Dimethyl Octacosanedioic Acid (iso-Diabolic Acid), a Common Membrane-Spanning Lipid of Acidobacteria Subdivisions 1 and 3." Applied and Environmental Microbiology 77, no. 12 (2011): 4147–54. http://dx.doi.org/10.1128/aem.00466-11.

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ABSTRACTThe distribution of membrane lipids of 17 different strains representing 13 species of subdivisions 1 and 3 of the phylumAcidobacteria, a highly diverse phylum of theBacteria, were examined by hydrolysis and gas chromatography-mass spectrometry (MS) and by high-performance liquid chromatography-MS of intact polar lipids. Upon both acid and base hydrolyses of total cell material, the uncommon membrane-spanning lipid 13,16-dimethyl octacosanedioic acid (iso-diabolic acid) was released in substantial amounts (22 to 43% of the total fatty acids) from all of the acidobacteria studied. This
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Lopes dos Santos, Raquel A., and Christopher H. Vane. "Tracking natural organic carbon in the River Clyde, UK, using glycerol dialkyl glycerol tetraethers." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 108, no. 2-3 (2017): 289–98. http://dx.doi.org/10.1017/s175569101800035x.

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ABSTRACTSurface sediments from a 100-km stretch of the River Clyde, UK, and its estuary were analysed for glycerol dialkyl glycerol tetraethers (GDGTs) to track the downstream changes in the source of organic matter (OM) and to evaluate the impact of urbanisation. Bacterial membrane lipids, named branched GDGTs (brGDGTs), produced in soils and rivers ranged from 1.6 to 58μgg−1 organic carbon (OC) and the isoprenoid GDGT crenarchaeol, mainly from marine archaea, ranged from 0.01 to 42μgg−1 OC. The highest brGDGT concentrations were in the upper river, in Glasgow city and in the outer estuary, s
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Hu, Jianfang, Philip A. Meyers, Gukui Chen, Ping’an Peng, and Qunhui Yang. "Archaeal and bacterial glycerol dialkyl glycerol tetraethers in sediments from the Eastern Lau Spreading Center, South Pacific Ocean." Organic Geochemistry 43 (February 2012): 162–67. http://dx.doi.org/10.1016/j.orggeochem.2011.10.012.

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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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Schouten, Stefan, Marcel T. J. van der Meer, Ellen C. Hopmans, et al. "Archaeal and Bacterial Glycerol Dialkyl Glycerol Tetraether Lipids in Hot Springs of Yellowstone National Park." Applied and Environmental Microbiology 73, no. 19 (2007): 6181–91. http://dx.doi.org/10.1128/aem.00630-07.

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ABSTRACTGlycerol dialkyl glycerol tetraethers (GDGTs) are core membrane lipids originally thought to be produced mainly by (hyper)thermophilic archaea. Environmental screening of low-temperature environments showed, however, the abundant presence of structurally diverse GDGTs from both bacterial and archaeal sources. In this study, we examined the occurrences and distribution of GDGTs in hot spring environments in Yellowstone National Park with high temperatures (47 to 83°C) and mostly neutral to alkaline pHs. GDGTs with 0 to 4 cyclopentane moieties were dominant in all samples and are likely
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Becker, Kevin W., Julius S. Lipp, Chun Zhu, Xiao-Lei Liu, and Kai-Uwe Hinrichs. "An improved method for the analysis of archaeal and bacterial ether core lipids." Organic Geochemistry 61 (June 5, 2013): 34–44. https://doi.org/10.1016/j.orggeochem.2013.05.007.

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In recent decades, microbial membrane lipids have become a focus of geoscientific research because of their proxy potential. The aim of this study was to develop new methods for ultra high performance liquid chromatography (UHPLC) separation of isomers of archaeal and bacterial membrane ether lipids, in particular glycerol dialkyl glycerol tetraethers (GDGTs), because of their tendency to co-elute with related but incompletely characterized derivatives. Our newly developed protocol, involving analysis using two Acquity BEH HILIC amide columns in tandem, enables chromatographic separation of se
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Zink, Klaus-G., Marcus J. Vandergoes, Kai Mangelsdorf, Ann C. Dieffenbacher-Krall, and Lorenz Schwark. "Application of bacterial glycerol dialkyl glycerol tetraethers (GDGTs) to develop modern and past temperature estimates from New Zealand lakes." Organic Geochemistry 41, no. 9 (2010): 1060–66. http://dx.doi.org/10.1016/j.orggeochem.2010.03.004.

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Blank, P. N., A. A. Barnett, T. A. Ronnebaum, et al. "Structural studies of geranylgeranylglyceryl phosphate synthase, a prenyltransferase found in thermophilic Euryarchaeota." Acta Crystallographica Section D Structural Biology 76, no. 6 (2020): 542–57. http://dx.doi.org/10.1107/s2059798320004878.

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Archaea are uniquely adapted to thrive in harsh environments, and one of these adaptations involves the archaeal membrane lipids, which are characterized by their isoprenoid alkyl chains connected via ether linkages to glycerol 1-phosphate. The membrane lipids of the thermophilic and acidophilic euryarchaeota Thermoplasma volcanium are exclusively glycerol dibiphytanyl glycerol tetraethers. The first committed step in the biosynthetic pathway of these archaeal lipids is the formation of the ether linkage between glycerol 1-phosphate and geranylgeranyl diphosphate, and is catalyzed by the enzym
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Dissertations / Theses on the topic "Bacterial alkyl glycerol tetraethers"

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Véquaud, Pierre. "Développement et application de nouveaux marqueurs d’environnement d’origine bactérienne en milieu terrestre." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS475.

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A ce jour, les seuls biomarqueurs organiques utilisables pour la reconstruction de la température et du pH en milieu terrestre sont les alkyl tetraéthers de glycérol bactériens (GDGTs ramifiés ou brGDGTs). Ce travail de thèse s’est intéressé au développement et à l’application d’autres marqueurs bactériens, les acides gras 3-hydroxylés (3-AGH). L’analyse de l’abondance des 3-AGHs et des brGDGTs dans 49 sols prélevés dans les Alpes françaises a permis de quantifier l'influence de paramètres environnementaux autres que la température sur la distribution des brGDGTs et des 3-AGHs. En parallèle, d
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