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Tomas Laursen et al.
Science (New York, N.Y.), 354(6314), 890-893 (2016-11-20)
Metabolic highways may be orchestrated by the assembly of sequential enzymes into protein complexes, or metabolons, to facilitate efficient channeling of intermediates and to prevent undesired metabolic cross-talk while maintaining metabolic flexibility. Here we report the isolation of the dynamic
Nicole Harmouche et al.
Biophysical journal, 115(6), 1033-1044 (2018-09-10)
A synergistic enhancement of activities has been described for the amphipathic cationic antimicrobial peptides magainin 2 and PGLa when tested in antimicrobial assays or in biophysical experiments using model membranes. In the presence of magainin 2, PGLa changes from an
Ondřej Peterka et al.
Biochimica et biophysica acta. Molecular and cell biology of lipids, 1865(5), 158634-158634 (2020-01-25)
Ultrahigh-performance supercritical fluid chromatography - mass spectrometry (UHPSFC/MS), ultrahigh-performance liquid chromatography - mass spectrometry (UHPLC/MS), and matrix-assisted laser desorption/ionization (MALDI) - MS techniques were used for the lipidomic characterization of exosomes isolated from human plasma. The high-throughput methods UHPSFC/MS and
Emily R Schenk et al.
Journal of mass spectrometry : JMS, 50(1), 88-94 (2015-01-21)
Bacterial resistance to antibiotics has become an increasing threat, requiring not only the development of new targets in drug discovery, but more importantly, a better understanding of cellular response. In the current study, three closely related Escherichia coli strains, a
E F Kot et al.
Langmuir : the ACS journal of surfaces and colloids, 34(28), 8302-8313 (2018-06-21)
Isotropic bicelles are a widely used membrane mimetic for structural studies of membrane proteins and their transmembrane domains. Simple and cheap in preparation, they contain a patch of lipid bilayer that reproduces the native environment of membrane proteins. Despite the
Luke S Evans et al.
Biochimica et biophysica acta. Biomembranes, 1862(9), 183343-183343 (2020-05-18)
Lipidic bicelles have been widely used for the analysis of integral membrane proteins where their spontaneous alignment in an magnetic field has been exploited for oriented sample solid-state NMR studies. Many of their physical properties however make them well suited
Alwena H Morgan et al.
Nature protocols, 5(12), 1919-1931 (2010-12-04)
Phospholipid-esterified oxylipins include newly described families of bioactive lipids generated by lipoxygenases in immune cells. Until now, assays for their quantitation were not well developed or widely available. Here, we describe a mass spectrometric protocol that enables accurate measurement of
Alex J B Kreutzberger et al.
Biophysical journal, 115(9), 1755-1761 (2018-10-22)
Intramembrane proteases hydrolyze peptide bonds within the membrane as a regulatory paradigm that is conserved across all forms of cellular life. Many of these enzymes are thought to be oligomeric, and that their resulting quaternary interactions form the basis of
He Li et al.
Food chemistry, 310, 125947-125947 (2019-12-17)
An ultra performance liquid chromatography-Triple time of flight mass spectrometry (UPLC-Triple TOF-MS/MS) method were established to characterize the lipid profiles in four shellfish species. More than 600 lipid molecular species belonging to 14 classes were detected. Phospholipids (PLs) were predominant
Ana M Campos et al.
Food research international (Ottawa, Ont.), 89(Pt 1), 177-185 (2017-05-04)
Eggs are one of the main foods eaten worldwide. Nutritionally they are one of the main sources of dietary lipids, impacting human health. Egg yolk lipid composition changes depending on different conditions associated with hens raising. Therefore, the purpose of
Philippe Calvez et al.
Journal of the American Chemical Society (2016-10-01)
Recoverin undergoes a calcium-myristoyl switch during visual phototransduction. Indeed, calcium binding by recoverin results in the extrusion of its myristoyl group, which allows its membrane binding. However, the contribution of particular lipids and of specific amino acids of recoverin in
Paulina Perczyk et al.
Biochimica et biophysica acta. Biomembranes, 1862(2), 183136-183136 (2019-11-22)
Soil fungi play an important role in the environment decomposing dead organic matter and degrading persistent organic pollutants (POP). The presence of hydrophobic POP in the soil and membrane-lytic substances excreted by competing microorganism to the soil solution is the
Noncanonical regulation of phosphatidylserine metabolism by a Sec14-like protein and a lipid kinase.
Yaxi Wang et al.
The Journal of cell biology, 219(5) (2020-04-19)
The yeast phosphatidylserine (PtdSer) decarboxylase Psd2 is proposed to engage in a membrane contact site (MCS) for PtdSer decarboxylation to phosphatidylethanolamine (PtdEtn). This proposed MCS harbors Psd2, the Sec14-like phosphatidylinositol transfer protein (PITP) Sfh4, the Stt4 phosphatidylinositol (PtdIns) 4-OH kinase
Christopher P Thomas et al.
Nature protocols, 9(1), 51-63 (2013-12-18)
This protocol measures externalization of aminophospholipids (APLs) to the outside of the plasma membrane using mass spectrometry (MS). APL externalization occurs in numerous events, and it is relevant for transplant medicine, immunity and cancer. In this protocol, externalized APLs are
Dhaval Patel et al.
Oxidative medicine and cellular longevity, 2017, 4829180-4829180 (2017-08-09)
Phosphatidylethanolamine (PE) is the second most abundant phospholipid in mammalian cells. PE comprises about 15-25% of the total lipid in mammalian cells; it is enriched in the inner leaflet of membranes, and it is especially abundant in the inner mitochondrial
Mehdi Azouz et al.
Biochimica et biophysica acta. Biomembranes, 1862(6), 183215-183215 (2020-02-18)
The biophysical characterisation of membrane proteins and their interactions with lipids in native membrane habitat remains a major challenge. Indeed, traditional solubilisation procedures with detergents often causes the loss of native lipids surrounding membrane proteins, which ultimately impacts structural and
Erum Malik et al.
Biochimica et biophysica acta. Biomembranes, 1862(2), 183141-183141 (2019-12-04)
Linearized esculentin 2 EM (E2EM-lin) from the frog, Glandirana emeljanovi was highly active against Gram-positive bacteria (minimum lethal concentration ≤ 5.0 μM) and strongly α-helical in the presence of lipid mimics of their membranes (>55.0%). The N-terminal α-helical structure adopted by E2EM-lin showed
Penghsuan Huang et al.
Analytical chemistry, 92(10), 7139-7145 (2020-04-22)
A series of novel anthranilic acid derivatives I-IV, of which COOH-NH2 (I) and COOH-NHMe (IV) are endowed with acid and base bifunctionality, were designed and synthesized for matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry applications in dual polarity molecular imaging
M Orczyk et al.
Langmuir : the ACS journal of surfaces and colloids, 33(15), 3871-3881 (2017-03-24)
Digitonin, a steroidal saponin obtained from the foxglove plant (Digitalis purpurea), displays a wide spectrum of biological properties and is often used as a model in mechanistic investigations of the biological activity of saponins. In the present study, Langmuir monolayers
Paulina Perczyk et al.
Biochimica et biophysica acta. Biomembranes, 1862(6), 183239-183239 (2020-03-03)
Soil bacteria are decomposer organisms crucial for the biodegradation of organic pollutants, mineralization of dead organic matter and the turnover of biogenic elements. In their environment they are constantly exposed to membrane-lytic enzymes emitted to the soil by other microorganisms
Jadegoud Yaligar et al.
PloS one, 9(3), e91436-e91436 (2014-03-19)
Dietary saturated fatty acids contribute to the development of fatty liver and have pathogenic link to systemic inflammation. We investigated the effects of dietary fat towards the pathogenesis of non-alcoholic fatty liver disease by longitudinal in vivo magnetic resonance spectroscopy
Bruna Neves et al.
Molecules (Basel, Switzerland), 25(9) (2020-05-07)
Nitrated phospholipids have recently been detected in vitro and in vivo and associated with beneficial health effects. They were identified and quantified in biological samples by lipidomics methodologies using liquid chromatography-collision-induced dissociation (CID) tandem mass spectrometry (MS/MS) acquired with the
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