Publications associées à Glycine (acide aminé)

A Rapid Translational Immune Response Program in CD8 Memory T Lymphocytes

The activation of memory T cells is a very rapid and concerted cellular response that requires coordination between cellular processes in different compartments and on different time scales. In this study, we use ribosome profiling and deep RNA sequencing ...

American Association of Immunologists ; Oxford University Press2022

Microhydration of Biomolecules: Revealing the Native Structures by Cold Ion IR Spectroscopy

Oleg Boyarkine, Andrei Zviagin, Viktoriia Aladinskaia

The native-like structures of protonated glycine and peptide Gly3H+ were elucidated using cold ion IR spectroscopy of these biomolecules hydrated by a controlled number of water molecules. The complexes were generated directly from an aqueous solution usin ...

2021

Impairment of Glycolysis-Derived L-Serine Production in Astrocytes Contributes to Cognitive Deficits in Alzheimer's Disease

Graham Knott

Alteration of brain aerobic glycolysis is often observed early in the course of Alzheimer's disease (AD). Whether and how such metabolic dysregulation contributes to both synaptic plasticity and behavioral deficits in AD is not known. Here, we show that th ...

Cell Press2020

The gut microbiota influences skeletal muscle mass and function in mice

Johan Auwerx, Hongbo Zhang, Walter Wahli

The functional interactions between the gut microbiota and the host are important for host physiology, homeostasis, and sustained health. We compared the skeletal muscle of germ-free mice that lacked a gut microbiota to the skeletal muscle of pathogen-free ...

AMER ASSOC ADVANCEMENT SCIENCE2019

Dual action of L-Lactate on the activity of NR2B-containing NMDA receptors: from potentiation to neuroprotection

Pierre Magistretti, Igor Allaman, Pierre Marquet, Pascal Jourdain, Kaspar Rothenfusser

L-Lactate is a positive modulator of NMDAR-mediated signaling resulting in plasticity gene induction and memory consolidation. However, L-Lactate is also able to protect neurons against excito-toxic NMDAR activity, an indication of a mitigating action of L ...

Nature Research2018

Scanning tunneling microscopy on large bio-molecular systems on surfaces

Sebastian Koslowski

The ever growing demand for the development of new technologies and materials has led to extensive studies inspired by biological functional complexes. Peptides with their outstanding ability to efficiently self-assemble can express a broad spectrum of int ...

EPFL2017

Modulation of the endogenous production of protoporphyrin IX in a yeast - based model organism

Georges Wagnières, Emmanuel Louis Arthur Gerelli, Jaroslava Joniová

The main aim of this study was to assess conditions at which simple yeast-based model organism produces maximal levels of protoporphyrin IX (PpIX) after an exogenous administration of its precursor, 5-aminolevulinic acid (ALA), and the ferrous-ion chelator ...

Spie-Int Soc Optical Engineering2017

Lifetimes of long-lived states in inhomogeneous magnetic fields

Geoffrey Bodenhausen, Srinivas Chinthalapalli, Maninder Singh

Long-lived states (LLS), also known as singlet states, have been widely studied in the last decade. So far, LLS have only been observed in homogeneous magnetic fields, which preclude applications to many biological samples that are inherently inhomogeneous ...

Elsevier2015

Capture and Release of CO2 in Monoethanolamine Aqueous Solutions: New Insights from First-Principles Reaction Dynamics

Wanda Andreoni, Changru Ma, Fabio Pietrucci

Aqueous,monoethanolamine (MEA) solution is commonly used for post-combustion carbon capture via chemical absorption. Extensive research has been carried out to characterize both uptake and release of carbon dioxide (CO2), with the aim of improving process ...

Amer Chemical Soc2015

Chloride Ions in the Pore of Glycine and GABA Channels Shape the Time Course and Voltage Dependence of Agonist Currents

Michele Giugliano

In the vertebrate CNS, fast synaptic inhibition is mediated by GABA and glycine receptors. We recently reported that the time course of these synaptic currents is slower when intracellular chloride is high. Here we extend these findings to measure the effe ...

2011

The Mouse Eugenol Odorant Receptor: Structural and Functional Plasticity of a Broadly Tuned Odorant Binding Pocket

Horst Vogel, Horst Pick, Olivia Baud, Sylvain Etter

Molecular interactions of odorants with their olfactory receptors (ORs) are of central importance for the ability of the mammalian olfactory system to detect and discriminate a vast variety of odors with a limited set of receptors. How a particular OR bind ...

American Chemical Society2011

A Neutral Zwitterionic Molecular Solid

László Forró, Bálint Náfrádi, Balazs Sipos

We report on the acid ethylenedithiotetrathiafulvaleneamidoglycine (EDT-TTF-CO-NH-CH2-CO2H; 1; EDT-TTF=ethylenedithiotetrathiafulvalene) and the 1:1 adduct [(EDT-TTF)(center dot+) -CO-NH-CH2-(CO2H)(-)][(EDT-TTF)-CO-NH-CH2-(CO2H)]center dot CH3OH (2), a new ...

2010

Conformation of Polyalanine and Polyglycine Dications in the Gas Phase: Insight from Ion Mobility Spectrometry and Replica-Exchange Molecular Dynamics

Yury Tsybin, Aleksey Vorobyev, Rodolphe Antoine

The conformation of model Arg(Ala)(4)X(Ala)(4)Lys+2H and Arg(Gly)(4)X(Gly)(4)Lys+2H peptides has been systematically investigated as a function of the central amino acid X through a combined experimental and theoretical approach. Mass spectrome ...

American Chemical Society2010

Direct in vivo measurement of glycine and the neurochemical profile in the rat medulla oblongata

Rolf Gruetter, Lijing Xin, João Miguel das Neves Duarte, Giulio Gambarota

The medulla oblongata (MO) contains a high density of glycinergic synapses and a particularly high concentration of glycine The aims of this study were to measure directly in vivo the neurochemical profile, including glycine, in MO using a spin-echo-based ...

Wiley-Blackwell2010

Experimentally Facile Controlled Polymerization of N-Carboxyan hydrides (NCAs), Including O-Benzyl-L-threonine NCA

Matthew Gibson

It is demonstrated here that three different alpha-amino N-carboxyanhydrides (NCAs), including for the first time O-benzyl-L-threonine NCA, can be polymerized in a controlled/"living" fashion without the need for transition metal catalysts or complex custo ...

2009

Characterization of the 5HT3 receptor in live cells and in vitro : heterologous expression, isolation and reconstitution in lipid membranes

Veronica Ponce de Leon

The serotonin type 3 receptor (5HT3R) is a homopentameric, cation selective channel that mediates fast excitatory transmission in the nervous system. It is a member of the Cys-loop family of receptors that include the nicotinic acetylcholine receptor (nACh ...

EPFL2009

Spectroscopy and Conformational Preferences of Gas-Phase Helices

Thomas Rizzo, Oleg Boyarkine, Caroline Seaiby

We describe here a study of the spectroscopy of two peptides that we expect to be helical, Ac-Phe-(Ala)5-Lys-H+ and Ac-Phe-(Ala)10-Lys-H+, and one that we expect to be globular, Ac-Lys(H+)-Phe-(Ala)10, with the goal of identifying spectral features charact ...

2009

Synthesis of calcium sensors for labelling fusion proteins-synthesis of modified prolines using aza naked sugar methodology

Agostina Ruggiu

Synthesis of Modified Prolines using aza naked sugar methodology R and S-prolines are secondary, cyclic, pyrrolidine-based amino acids. Proline demonstrated excellent catalytic activity to promote enantio- and diatereoselective, intra- and intermolecular c ...

EPFL2008

A new method for protein labeling with small molecules based on acyl carrier protein

Nathalie George

A new method for the covalent and specific labeling of fusion proteins of carrier proteins (CPs) with small organic molecules has been developed in this work. This technology combines the convenience of expressing genetically tagged reporter proteins with ...

EPFL2006

5-Aminolevulinic acid and its derivatives: physical chemical properties and protoporphyrin IX formation in cultured cells

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger, Pascal Uehlinger

Protoporphyrin IX (PpIX) is used as a fluorescence marker and photosensitizing agent in photodynamic therapy (PDT). A temporary increase of PpIX in tissues can be obtained by administration of 5-aminolevulinic acid (ALA). Lipophilicity is one of the key pa ...

2000