Closed-form expressions for the analysis of Dark state Exchange Saturation Transfer (DEST) NMR experiments, a powerful experimental tool for characterizing exchange processes involving the interaction of NMR visible species with very high molecular weight partners, is presented. Essentially identical exchange and relaxation parameters are derived from the analytical and numerical best fits of the DEST profiles obtained for a protein construct derived from huntingtin exon-1, comprising the...
Towards autonomous analysis of chemical exchange saturation transfer experiments using deep neural networks
Towards autonomous analysis of chemical exchange saturation transfer experiments using deep neural networks
Abstract
Macromolecules often exchange between functional states on timescales that can be accessed with NMR spectroscopy and many NMR tools have been developed to characterise the kinetics and thermodynamics of the exchange processes, as well as the structure of the conformers that are involved. However, analysis of the NMR data that report on exchanging macromolecules often hinges on complex least-squares fitting procedures as well as human...
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05-29-2022 03:31 AM
[ASAP] Sensitivity Enhancement by Progressive Saturation of the Proton Reservoir: A Solid-State NMR Analogue of Chemical Exchange Saturation Transfer
Sensitivity Enhancement by Progressive Saturation of the Proton Reservoir: A Solid-State NMR Analogue of Chemical Exchange Saturation Transfer
Michael J. Jaroszewicz, Adam R. Altenhof, Robert W. Schurko, and Lucio Frydman
https://pubs.acs.org/na101/home/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/jacs.1c08277/20211118/images/medium/ja1c08277_0004.gif
Journal of the American Chemical Society
DOI: 10.1021/jacs.1c08277
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11-19-2021 03:34 PM
[NMR paper] Multi-Quantum Chemical Exchange Saturation Transfer NMR to Quantify Symmetrical Exchange: Application to Rotational Dynamics of the Guanidinium Group in Arginine Side Chains.
Multi-Quantum Chemical Exchange Saturation Transfer NMR to Quantify Symmetrical Exchange: Application to Rotational Dynamics of the Guanidinium Group in Arginine Side Chains.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles Multi-Quantum Chemical Exchange Saturation Transfer NMR to Quantify Symmetrical Exchange: Application to Rotational Dynamics of the Guanidinium Group in Arginine Side Chains.
J Phys Chem Lett. 2020 Jun 16;:
Authors: Karunanithy G, Reinstein J, Hansen...
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06-18-2020 03:07 AM
3-O-Methyl- d -glucose mutarotation and proton exchange rates assessed by 13 C, 1 H NMR and by chemical exchange saturation transfer and spin lock measurements
3-O-Methyl- d -glucose mutarotation and proton exchange rates assessed by 13 C, 1 H NMR and by chemical exchange saturation transfer and spin lock measurements
Abstract
3-O-Methyl-d-glucose (3OMG) was recently suggested as an agent to image tumors using chemical exchange saturation transfer (CEST) MRI. To characterize the properties of 3OMG in solution, the anomeric equilibrium and the mutarotation rates of 3OMG were studied by 1H and 13C NMR. This information is essential in designing the in vivo CEST experiments. At room temperature, the ratio...
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11-25-2018 06:02 AM
[U. of Ottawa NMR Facility Blog] CEST - Chemical Exchange Saturation Transfer
CEST - Chemical Exchange Saturation Transfer
Chemical Exchange Saturation Transfer (CEST) is a technique where one resonance, in slow exchange with a second resonance, is saturated with a selective low power pulse followed by a hard non-selective 90° pulse. The intensity of the second resonance is then diminished due to the transfer of saturation from the first resonance as the result of chemical exchange. The figure below demonstrates this for a 25 mM solution of salicylic acid in H2O/D2O buffered at pH 7. ...
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04-22-2016 08:45 PM
Speeding-up exchange-mediated saturation transfer experiments by Fourier transform
Speeding-up exchange-mediated saturation transfer experiments by Fourier transform
Abstract
Protein motions over various time scales are crucial for protein function. NMR relaxation dispersion experiments play a key role in explaining these motions. However, the study of slow conformational changes with lowly populated states remained elusive. The recently developed exchange-mediated saturation transfer experiments allow the detection and characterization of such motions, but require extensive measurement time. Here we show that, by making use of...
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09-10-2015 01:10 AM
[NMR paper] Probing Slow Chemical Exchange at Carbonyl Sites in Proteins by Chemical Exchange Saturation Transfer NMR Spectroscopy.
Probing Slow Chemical Exchange at Carbonyl Sites in Proteins by Chemical Exchange Saturation Transfer NMR Spectroscopy.
Probing Slow Chemical Exchange at Carbonyl Sites in Proteins by Chemical Exchange Saturation Transfer NMR Spectroscopy.
Angew Chem Int Ed Engl. 2013 Feb 28;
Authors: Vallurupalli P, Kay LE
Abstract
Seeing the invisible: A 13 CO NMR chemical exchange saturation transfer (CEST) experiment for the study of "invisible" excited protein states with lifetimes on the order of 5-50 ms has been developed. The 13 CO chemical...
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03-02-2013 11:45 AM
[U. of Ottawa NMR Facility Blog] Saturation Transfer and Exchange
Saturation Transfer and Exchange
Exchange processes that occur on the NMR time scale affect the NMR line shapes and can be studied by line shape analysis. If the exchange process is slow on the NMR time scale, one can employ EXSY or inversion transfer methods to study the exchange. An alternative to these is the saturation transfer technique. In this method, one of the slowly exchanging resonances (A) is saturated with low power CW irradiation and the effect on the intensity of the resonance of the exchange partner (B) is monitored. If there is exchange between A and B during the period of...
A Closed-Form Expression for Analysis of Dark State Exchange Saturation Transfer (DEST) NMR Experiments
Linear Mode
