isotopic labelling

Isotopic labelling studies suggest that plants also obtain nitrogen from the ants.

This isotopic labelling has been used to study water-cycling at the local, regional and global scales.

Key words: phosphoproteomics, mass spectrometry, quantitation, affinity purification, isotopic labelling.

Key words: nitrous oxide, carbenium ion, isotopic labelling, solvolysis, m value.

Isotopic labelling studies show that the aryl nitrogen (N1) of the starting phenylhydrazine is incorporated into the resulting indole.

Combined with isotopic labelling evidence and computational studies, the proposed reaction mechanism for proline-catalyzed aldol reactions is as follows:

The reductive eliminations of CH4 and C2H6 are shown to be primarily intramolecular reactions by isotopic labelling.

Spectroscopic detection and characterisation of unstable species employs infrared, uv/visible and luminescence techniques.5 Isotopic labelling allows detailed molecular geometries to be deduced.

Kinetic studies and isotopic labelling studies have revealed that an Ir(III) triboryl complex reacts with the arene in the catalytic process.

A second major research interest involves the development of non-synthetic type methods for the isotopic labelling of organic compounds to high specific activity using elemental tritium gas as the isotope source.

Additionally, since Pichia can grow in media containing only one carbon source and one nitrogen source, it is suitable for isotopic labelling applications in e.g. protein NMR.

Isotopic labeling (or isotopic labelling) is a technique used to track the passage of an isotope (an atom with a detectable variation) through a reaction, metabolic pathway, or cell.

Dr Paul Gooley leads another NMR group giving the Department critical mass in areas such as pulse sequence development, isotopic labelling, triple-resonance spectroscopy and protein structure calculation.

This experiment requires a purified sample of protein prepared with C and N isotopic labelling, at a concentration greater than 0.1 mM, and is thus generally only applied to recombinant proteins.

Further attempts to estimate platelet function in vivo have involved isotopic labelling of platelets and measurement of platelet survival and assessments of platelet aggregation in whole blood.

We show how selective isotopic labelling can be used to enhance the resolution beyond the limit determined by Kmax and illustrate the method using the structure of hexadecyl trimethyl ammonium bromide as an example.

They are highly sensitive to lighter atoms such as carbon, hydrogen and oxygen that make up these organic molecules and isotopic labelling can be used to determine the structure and composition of interfacial layers.

If appropriate, isotopic labelling studies may be conducted to relate specific lipids to bacterial types and processes (e.g. methane oxidation)3, in combination with molecular biological (RNA-based) techniques to confirm bacterial identity.

Isotopic labelling and computational studies suggest that the double hydrogen transfer mechanism occurs by a concerted pathway and that the rate of reaction is highly dependent on the conformation of the alkane donor.

The chemical ionization mass spectra in combination with isotopic labelling and metastable ion studies have made it possible to elucidate the major fragmentation reaction channels of the C5H11O+ ions formed and their dependence on precursor structure.

This session invites submissions of papers using isotope tracers to better understand the hydrological cycle including: isotopic labelling of precipitation, tracing runoff pathways, streamflow generation mechanisms, water residence times, water yields, and partitioning of water sources and sinks including evapotranspiration partitioning.