Over decades multidimensional NMR spectroscopy has become an indispensable tool for structure elucidation of natural products, peptides and medium sized to large proteins. Heteronuclear single quantum coherence (HSQC) spectroscopy is one of the work horses in that field often used to map structural connectivity between protons and carbons or other hetero nuclei. In overcrowded HSQC spectra, proton multiplet structures of cross peaks set a limit to the power of resolution and make a...
Boosting the resolution of low-field $$^{15}\hbox {N}$$15N relaxation experiments on intrinsically disordered proteins with triple-resonance NMR
Boosting the resolution of low-field $$^{15}\hbox {N}$$15N relaxation experiments on intrinsically disordered proteins with triple-resonance NMR
Abstract
Improving our understanding of nanosecond motions in disordered proteins requires the enhanced sampling of the spectral density function obtained from relaxation at low magnetic fields. High-resolution relaxometry and two-field NMR measurements of relaxation have, so far, only been based on the recording of one- or two-dimensional spectra, which provide insufficient resolution for challenging...
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02-29-2020 09:52 PM
Sensitivity and resolution of proton detected spectra of a deuterated protein at 40 and 60Â*kHz magic-angle-spinning
Sensitivity and resolution of proton detected spectra of a deuterated protein at 40 and 60Â*kHz magic-angle-spinning
Abstract
The use of small rotors capable of very fast magic-angle spinning (MAS) in conjunction with proton dilution by perdeuteration and partial reprotonation at exchangeable sites has enabled the acquisition of resolved, proton detected, solid-state NMR spectra on samples of biological macromolecules. The ability to detect the high-gamma protons, instead of carbons or nitrogens, increases sensitivity. In order to achieve...
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02-08-2015 02:49 PM
[NMR paper] Atomic Resolution Structure of a Protein Prepared by Non-Enzymatic His-Tag Removal. Crystallographic and NMR Study of GmSPI-2 Inhibitor.
Atomic Resolution Structure of a Protein Prepared by Non-Enzymatic His-Tag Removal. Crystallographic and NMR Study of GmSPI-2 Inhibitor.
Related Articles Atomic Resolution Structure of a Protein Prepared by Non-Enzymatic His-Tag Removal. Crystallographic and NMR Study of GmSPI-2 Inhibitor.
PLoS One. 2014;9(9):e106936
Authors: Kopera E, Bal W, Lenar?i? ivkovi? M, Dvornyk A, Kludkiewicz B, Grzelak K, Zhukov I, Zagórski-Ostoja W, Jaskolski M, Krzywda S
Abstract
Purification of suitable quantity of homogenous protein is very...
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09-19-2014 03:07 PM
Origin and removal of mixed-phase artifacts in gradient sensitivity enhanced heteronuclear single quantum correlation spectra
Origin and removal of mixed-phase artifacts in gradient sensitivity enhanced heteronuclear single quantum correlation spectra
Abstract Here we describe phasing anomalies observed in gradient sensitivity enhanced 15N-1H HSQC spectra, and analyze their origin. It is shown that, as a result of 15N off-resonance effects, dispersive contributions to the 1H signal become detectable, and lead to 15N-offset dependent phase errors. Strategies that effectively suppress these artifacts are presented.
Content Type Journal Article
Category Article
Pages 199-207
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09-30-2011 08:01 PM
Singular spectrum analysis for an automated solvent artifact removal and baseline correction of 1D NMR spectra.
Singular spectrum analysis for an automated solvent artifact removal and baseline correction of 1D NMR spectra.
Singular spectrum analysis for an automated solvent artifact removal and baseline correction of 1D NMR spectra.
J Magn Reson. 2011 Mar 6;
Authors: De Sanctis S, Malloni WM, Kremer W, Tomé AM, Lang EW, Neidig KP, Kalbitzer HR
NMR spectroscopy in biology and medicine is generally performed in aqueous solutions, thus in (1)H NMR spectroscopy, the dominant signal often stems from the partly suppressed solvent and can be many orders of...
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04-05-2011 10:22 PM
Towards automatic metabolomic profiling of high-resolution one-dimensional proton NMR spectra
Towards automatic metabolomic profiling of high-resolution one-dimensional proton NMR spectra
Abstract Nuclear magnetic resonance (NMR) and Mass Spectroscopy (MS) are the two most common spectroscopic analytical techniques employed in metabolomics. The large spectral datasets generated by NMR and MS are often analyzed using data reduction techniques like Principal Component Analysis (PCA). Although rapid, these methods are susceptible to solvent and matrix effects, high rates of false positives, lack of reproducibility and limited data transferability from one platform to the next....
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03-03-2011 02:06 AM
[NMR paper] Removal of zero-quantum coherence in protein NMR spectra using SESAM decoupling and s
Removal of zero-quantum coherence in protein NMR spectra using SESAM decoupling and suppression of decoupling sidebands.
Related Articles Removal of zero-quantum coherence in protein NMR spectra using SESAM decoupling and suppression of decoupling sidebands.
J Magn Reson B. 1996 Feb;110(2):219-24
Authors: Weigelt J, Hammarstroem A, Bermel W, Otting G
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08-22-2010 02:27 PM
Automated solvent artifact removal and base plane correction of multidimensional NMR
Abstract Strong solvent signals lead to a disappearance of weak protein signals close to the solvent resonance frequency and to base plane variations all over the spectrum. AUREMOL-SSA provides an automated approach for solvent artifact removal from multidimensional NMR protein spectra. Its core algorithm is based on singular spectrum analysis (SSA) in the time domain and is combined with an automated base plane correction in the frequency domain. The performance of the method has been tested on synthetic and experimental spectra including two-dimensional NOESY and TOCSY spectra and a...
Boosting the resolution of multidimensional NMR spectra by complete removal of proton spin multiplicities
Linear Mode
