Publications associées à Isotopologue

In silico tracing of the fate of single carbon atoms in different physiological states of E. coli

Jasmin Maria Hafner, Noushin Hadadi, Beatriz Lopes Pinto Basto Carreira

Many applications of systems biology such as the simulation of isotope labeling experiments and pathway inference in metabolic engineering rely on atom-level representation of metabolism. Because of its challenging complexity and the difficulty of obtainin ...

2018

Charlotte Madeleine Nicole Lekieffre

Foraminifera are ubiquitous eukaryotic protists inhabiting all types of marine environments. The chemical and isotopic compositions of their carbonate tests are commonly used as proxies for paleo-environmental conditions. However, while foraminifera repres ...

EPFL2017

Carbon, Hydrogen, and Nitrogen Isotope Fractionation Trends in N-Nitrosodimethylamine Reflect the Formation Pathway during Chloramination of Tertiary Amines

Urs von Gunten, Stephanie Spahr

Assessing the precursors and reactions leading to the carcinogenic N-nitrosodimethylamine (NDMA) during drinking water disinfection is a major challenge. Here, we investigate whether changes of C-13/C-12,H-2/H-1, and N-15/N-14 ratios of NDMA give rise to i ...

American Chemical Society2017

Kinetic isotope effects and how to describe them

Jiri Vanicek, Konstantin Karandashev

We review several methods for computing kinetic isotope effects in chemical reactions including semiclassical and quantum instanton theory. These methods describe both the quantization of vibrational modes as well as tunneling and are applied to the ⋅H + H ...

2017

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

Yury Tsybin, Konstantin Nagornov, Kristina Srzentic

Lipidomes undergo permanent extensive remodeling, but how the turnover rate differs between lipid classes and molecular species is poorly understood. We employed metabolic N-15 labeling and shotgun ultra-high-resolution mass spectrometry (sUHR) to quantify ...

Amer Chemical Soc2017

Clumped isotope fractionation during phosphoric acid digestion of carbonates at 70°C

Marie Estelle Solange Violay

The application of clumped isotopes (Delta(47)) in carbonate minerals as a sensitive temperature proxy in paleo-environments depends on a well-constrained clumped isotope fractionation for the necessary step of phosphoric acid digestion of the carbonate mi ...

Elsevier2016

Dormant or not dormant? Benthic foraminiferal metabolism under anoxia

Anders Meibom, Charlotte Madeleine Nicole Lekieffre, Emmanuelle Geslin

Hypoxic events particularly affect benthic ecosystems on continental shelves and in coastal areas where renewal of bottom waters slow. Foraminifera living in such environments are among the most tolerant to hypoxia in the meiofauna. Some foraminifera speci ...

2016

NanoSIMS applied to the study of foraminifera

Anders Meibom, Stéphane Laurent Escrig, Charlotte Madeleine Nicole Lekieffre, Emmanuelle Geslin

NanoSIMS (Nanoscale Secondary-Ion Mass Spectrometry) is a powerful analytical technique that allows quantitative, subcellular imaging of incorporation and transfer of isotopically labeled compounds and metabolites in biological tissue (Hoppe et al., 2013). ...

2016

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Alexandre Buttler, Konstantin Svetlozarov Gavazov, Luca Bragazza

Peatlands are important sinks of atmospheric carbon (C) that, in response to climate warming, are undergoing dynamic vegetation succession. Here we examined the hypothesis that the uptake of nutrients by different plant growth forms (PGFs) is one key mecha ...

Springer2016

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Isotopologue

In silico tracing of the fate of single carbon atoms in different physiological states of E. coli

Accelerating path integral evaluation of equilibrium and kinetic isotope effects

Correlated TEM-NanoSIMS investigation of foraminiferal metabolism

Carbon, Hydrogen, and Nitrogen Isotope Fractionation Trends in N-Nitrosodimethylamine Reflect the Formation Pathway during Chloramination of Tertiary Amines

Kinetic isotope effects and how to describe them

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

Clumped isotope fractionation during phosphoric acid digestion of carbonates at 70°C

Dormant or not dormant? Benthic foraminiferal metabolism under anoxia

NanoSIMS applied to the study of foraminifera

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Graph Chatbot

Chattez avec Graph Search

Correlated TEM-NanoSIMS investigation of foraminiferal metabolism

In silico tracing of the fate of single carbon atoms in different physiological states of E. coli

Kinetic isotope effects and how to describe them

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

NanoSIMS applied to the study of foraminifera

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Accelerating path integral evaluation of equilibrium and kinetic isotope effects

Clumped isotope fractionation during phosphoric acid digestion of carbonates at 70°C

Carbon, Hydrogen, and Nitrogen Isotope Fractionation Trends in N-Nitrosodimethylamine Reflect the Formation Pathway during Chloramination of Tertiary Amines

Dormant or not dormant? Benthic foraminiferal metabolism under anoxia