NMR spectroscopy is a powerful tool to investigate molecular structure and dynamics. The poor sensitivity of this technique, however, limits its ability to tackle questions requiring dilute samples. Low-concentration photochemically induced dynamic nuclear polarization (LC-photo-CIDNP) is an optically enhanced NMR technology capable of addressing the above challenge by increasing the detection limit of aromatic amino acids in solution up to 1000-fold, either in isolation or within proteins....
[ASAP] Selective Isotope Labeling and LC-Photo-CIDNP Enable NMR Spectroscopy at Low-Nanomolar Concentration
Selective Isotope Labeling and LC-Photo-CIDNP Enable NMR Spectroscopy at Low-Nanomolar Concentration
Hanming Yang, Siyu Li, Clayton A. Mickles, Valeria Guzman-Luna, Kenji Sugisaki, Clayton M. Thompson, Hung H. Dang, and Silvia Cavagnero
https://pubs.acs.org/cms/10.1021/jacs.2c01809/asset/images/medium/ja2c01809_0009.gif
Journal of the American Chemical Society
DOI: 10.1021/jacs.2c01809
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06-17-2022 08:24 AM
Selective isotope labeling for NMR structure determination of proteins in complex with unlabeled ligands
Selective isotope labeling for NMR structure determination of proteins in complex with unlabeled ligands
Abstract
The physiological role of proteins is frequently linked to interactions with non-protein ligands or posttranslational modifications. Structural characterization of these complexes or modified proteins by NMR may be difficult as the ligands are usually not available in an isotope-labeled form and NMR spectra may suffer from signal overlap. Here, we present an optimized approach that uses specific NMR isotope-labeling schemes for overcoming...
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04-30-2019 03:58 PM
Strategy for Enhancement of (13)C-Photo-CIDNP NMR Spectra by Exploiting Fractional (13)C-Labeling of Tryptophan
From The DNP-NMR Blog:
Strategy for Enhancement of (13)C-Photo-CIDNP NMR Spectra by Exploiting Fractional (13)C-Labeling of Tryptophan
Eisenreich, W., et al., Strategy for Enhancement of (13)C-Photo-CIDNP NMR Spectra by Exploiting Fractional (13)C-Labeling of Tryptophan. J Phys Chem B, 2015. 119(43): p. 13934-43.
http://www.ncbi.nlm.nih.gov/pubmed/2624459
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03-16-2016 02:51 PM
[NMR paper] A Strategy for Enhancement of (13)C-photo-CIDNP NMR Spectra by Exploiting Fractional (13)C Labeling of Tryptophan.
A Strategy for Enhancement of (13)C-photo-CIDNP NMR Spectra by Exploiting Fractional (13)C Labeling of Tryptophan.
A Strategy for Enhancement of (13)C-photo-CIDNP NMR Spectra by Exploiting Fractional (13)C Labeling of Tryptophan.
J Phys Chem B. 2015 Aug 5;
Authors: Eisenreich W, Joshi M, Illarionov B, Kacprzak S, Lukaschek M, Kothe G, Budisa N, Fischer M, Bacher A, Weber S
Abstract
The photo-CIDNP effect has proven to be useful to strongly enhance NMR signals of photochemically active proteins simply by irradiation with light....
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08-06-2015 10:24 AM
[NMR paper] Photo-CIDNP NMR Spectroscopy of Amino Acids and Proteins.
Photo-CIDNP NMR Spectroscopy of Amino Acids and Proteins.
Related Articles Photo-CIDNP NMR Spectroscopy of Amino Acids and Proteins.
Top Curr Chem. 2013 May 14;
Authors: Kuhn LT
Abstract
Photo-chemically induced dynamic nuclear polarization (CIDNP) is a nuclear magnetic resonance (NMR) phenomenon which, among other things, is exploited to extract information on biomolecular structure via probing solvent-accessibilities of tryptophan (Trp), tyrosine (Tyr), and histidine (His) amino acid side chains both in polypeptides and proteins in...
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05-15-2013 03:12 PM
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
J Am Chem Soc. 2010 Nov 10;132(44):15542-3
Authors: Thamarath SS, Heberle J, Hore PJ, Kottke T, Matysik J
Until now, the solid-state photo-CIDNP effect, discovered in 1994 by Zysmilich and McDermott, has been observed selectively in photosynthetic systems. Here we present the first observation of this effect in a...
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03-02-2011 11:54 AM
[NMR paper] Photo-CIDNP NMR spectroscopy of a heme-containing protein.
Photo-CIDNP NMR spectroscopy of a heme-containing protein.
Related Articles Photo-CIDNP NMR spectroscopy of a heme-containing protein.
J Magn Reson. 2005 Aug;175(2):330-5
Authors: Day IJ, Wain R, Tozawa K, Smith LJ, Hore PJ
There are relatively few examples of the application of photo-CIDNP NMR spectroscopy to chromophore-containing proteins. The most likely reason for this is that simultaneous absorption of light by the photosensitiser molecule and the protein chromophore reduces the effectiveness of the photochemical reaction that produces...
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12-01-2010 06:56 PM
[NMR paper] Rapid sample-mixing technique for transient NMR and photo-CIDNP spectroscopy: applica
Rapid sample-mixing technique for transient NMR and photo-CIDNP spectroscopy: applications to real-time protein folding.
Related Articles Rapid sample-mixing technique for transient NMR and photo-CIDNP spectroscopy: applications to real-time protein folding.
J Am Chem Soc. 2003 Oct 15;125(41):12484-92
Authors: Mok KH, Nagashima T, Day IJ, Jones JA, Jones CJ, Dobson CM, Hore PJ
We describe the development and application of a novel rapid sample-mixing technique for real-time NMR (nuclear magnetic resonance) spectroscopy. The apparatus consists...