Increasing the sensitivity of NMR experiments is an ongoing field of research to help realise the exquisite molecular specificity of this technique. Hyperpolarisation of various nuclei is a powerful approach that enables the use of NMR for molecular and cellular imaging. Substantial progress has been achieved over recent years in terms of both tracer preparation and detection schemes. This review summarises recent developments in probe design and optimised signal encoding, and promising results in sensitive disease detection and efficient therapeutic monitoring. The different methods have great potential to provide molecular specificity not available by other diagnostic modalities. Copyright (c) 2012 John Wiley & Sons, Ltd.
A supplementary coil forH decoupling with commercial HCN MAS probes
A supplementary coil forH decoupling with commercial HCN MAS probes
Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 20 October 2011</br>
Matthias*Huber, Oliver*With, Paul*Schanda, René*Verel, Matthias*Ernst, ...</br>
Partial deuteration is a powerful tool to increase coherence life times and spectral resolution in proton solid-state NMR. The J coupling to deuterium needs, however, to be decoupled to maintain the good resolution in the (usually indirect)C dimension(s). We present a simple and reversible way to expand a commercial 1.3mm HCN MAS probe with...
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10-22-2011 10:16 AM
[NMR paper] Nmr probes of molecular dynamics: overview and comparison with other techniques.
Nmr probes of molecular dynamics: overview and comparison with other techniques.
Related Articles Nmr probes of molecular dynamics: overview and comparison with other techniques.
Annu Rev Biophys Biomol Struct. 2001;30:129-55
Authors: Palmer AG
NMR spin relaxation spectroscopy is a powerful approach for characterizing intramolecular and overall rotational motions in proteins. This review describes experimental methods for measuring laboratory frame spin relaxation rate constants by high-resolution solution-state NMR spectroscopy, together...
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11-19-2010 08:32 PM
[Question from NMRWiki Q&A forum] Please suggest experiments that push the power limits of NMR probes
Please suggest experiments that push the power limits of NMR probes
I'm trying to come up with reasonable tests of probe performance for all channels by simulating conditions at which arcing is most likely to occur.
For those tests I usually read voltage of the incoming wave on the RF line using directional coupler with a 50dB attenuated pickup and oscilloscope after running an "experiment" pulsing at the power and duty cycle that simulates the condition to be tested. If the waveform looks nice and square - there is no arcing.
What experiments should I look into? OK for 1H I'd pick...
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10-08-2010 02:35 AM
[NMR paper] Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfov
Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfovibrio vulgaris.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif Related Articles Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfovibrio vulgaris.
Eur J Biochem. 1997 Mar 15;244(3):721-34
Authors: Salgueiro CA, Turner DL, Xavier AV
The dipolar field generated by each of the four haems in the tetrahaem ferricytochrome c3 from...
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08-22-2010 03:31 PM
[NMR paper] Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfov
Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfovibrio vulgaris.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif Related Articles Use of paramagnetic NMR probes for structural analysis in cytochrome c3 from Desulfovibrio vulgaris.
Eur J Biochem. 1997 Mar 15;244(3):721-34
Authors: Salgueiro CA, Turner DL, Xavier AV
The dipolar field generated by each of the four haems in the tetrahaem ferricytochrome c3 from...
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08-22-2010 03:03 PM
[NMR paper] H NMR probes for inter-segmental hydrogen bonds in myoglobins.
H NMR probes for inter-segmental hydrogen bonds in myoglobins.
Related Articles H NMR probes for inter-segmental hydrogen bonds in myoglobins.
J Biochem. 1996 Jul;120(1):126-32
Authors: Yamamoto Y
NMR signals arising from the HisB5 N delta H and HisEF5 N epsilon H protons in sperm whale skeletal and horse heart myoglobins have been located for the first time in the downfield shifted portion of the spectra. The shifts and hydrogen exchange rates indicate that these His imidazole ring NH protons are involved in the inter-segmental hydrogen bonds...
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08-22-2010 02:27 PM
[NMR paper] NMR identification of protein surfaces using paramagnetic probes.
NMR identification of protein surfaces using paramagnetic probes.
Related Articles NMR identification of protein surfaces using paramagnetic probes.
Biochemistry. 1990 Oct 30;29(43):10041-8
Authors: Petros AM, Mueller L, Kopple KD
Paramagnetic agents produce line broadening and thus cancellation of anti phase cross-peak components in two-dimensional correlated nuclear magnetic resonance spectra. The specificity of this effect was examined to determine its utility for identifying surface residues of proteins. Ubiquitin and hen egg white...