Magnetic isotope effects: a potential testing ground for quantum biology [PDF]
Frontiers in Physiology, 2023 One possible explanation for magnetosensing in biology, such as avian magnetoreception, is based on the spin dynamics of certain chemical reactions that involve radical pairs.
Hadi Zadeh-Haghighi +5 more
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Isotope Effects on Chemical Shifts in the Study of Hydrogen Bonds in Small Molecules [PDF]
Molecules, 2022 This review is giving a short introduction to the techniques used to investigate isotope effects on NMR chemical shifts. The review is discussing how isotope effects on chemical shifts can be used to elucidate the importance of either intra- or ...
Poul Erik Hansen
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Nitrogen Kinetic Isotope Effects of Nitrification by the Complete Ammonia Oxidizer Nitrospira inopinata [PDF]
mSphere, 2021 Analysis of nitrogen isotope fractionation effects is useful for tracing biogeochemical nitrogen cycle processes. Nitrification can cause large nitrogen isotope effects through the enzymatic oxidation of ammonia (NH3) via nitrite (NO2−) to nitrate (NO3−)
Shurong Liu +5 more
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Inverse Solvent Isotope Effects in Enzyme-Catalyzed Reactions [PDF]
Molecules, 2020 Solvent isotope effects have long been used as a mechanistic tool for determining enzyme mechanisms. Most commonly, macroscopic rate constants such as kcat and kcat/Km are found to decrease when the reaction is performed in D2O for a variety of reasons ...
Patrick L. Fernandez, Andrew S. Murkin
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H/D Isotope Effects in Hydrogen Bonded Systems
Molecules, 2013 An extremely strong H/D isotope effect observed in hydrogen bonded A-H…B systems is connected with a reach diversity of the potential shape for the proton/deuteron motion.
Aleksander Filarowski +2 more
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Application of the Bland–Altman and Receiver Operating Characteristic (ROC) Approaches to Study Isotope Effects in Gas Chromatography–Mass Spectrometry Analysis of Human Plasma, Serum and Urine Samples [PDF]
MoleculesThe Bland–Altman approach is one of the most widely used mathematical approaches for method comparison and analytical agreement. This work describes, for the first time, the application of Bland–Altman to study 14N/15N and 1H/2H (D) chromatographic ...
Dimitrios Tsikas
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Molecules, 2014 Chlorinated ethenes are prevalent groundwater contaminants. To better constrain (bio)chemical reaction mechanisms of reductive dechlorination, the position-specificity of reductive trichloroethene (TCE) dehalogenation was investigated.
Stefan Cretnik +4 more
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Isotope Effects in ESR Spectroscopy [PDF]
Molecules, 2013 In order to present the relationship between ESR spectroscopy and isotope effects three levels are considered: (i) ESR spectroscopy is described on a general level up to the models for interpretation of the experimental spectra, which go beyond the ...
Werner Herrmann, Reinhard Stößer
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Isotope Effects on Chemical Shifts in the Study of Intramolecular Hydrogen Bonds
Molecules, 2015 The paper deals with the use of isotope effects on chemical shifts in characterizing intramolecular hydrogen bonds. Both so-called resonance-assisted (RAHB) and non-RAHB systems are treated. The importance of RAHB will be discussed.
Poul Erik Hansen
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Nitrogen isotope effects can be used to diagnose N transformations in wastewater anammox systems [PDF]
Scientific Reports, 2021 Anaerobic ammonium oxidation (anammox) plays an important role in aquatic systems as a sink of bioavailable nitrogen (N), and in engineered processes by removing ammonium from wastewater.
Paul M. Magyar +8 more
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