The Chemical Shift under Magic Angle Spinning
Rapid Proton-Detected NMR Assignment for Proteins with Fast Magic Angle Spinning
... into the sequential as well as the sequence-speci fic information. In order to deal with such ambiguities, MATCH accounts for the fact that each spin system may exist in multiple states; i.e., a spin system is allowed to ...
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Symmetry based pulse sequences in magic angle spinning solid state NMR
... isotropic chemical shift term { l, m, λ, µ } = { 0, 0, 1, 0 } , CSA terms of the form { l, m, λ, µ } = { 2, ± 2, 1, 0 } , and zero- quantum DD terms of the form { l, m, λ, µ } = { 2, ± 2, 2, 0 } ...
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A robust pulse sequence for the determination of small homonuclear dipolar couplings in magic angle spinning NMR
... We present a new solid-state NMR pulse sequence that accomplishes efficient broad-band dipolar recoupling in systems with small dipolar couplings and large chemical shift anisotropies. The method involves a ...
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Caught in the Act: ATP hydrolysis of an ABC-multidrug transporter followed by real-time magic angle spinning NMR
... a shift of the peak maximum of the Pc-ATP/Pb-ADP ...the chemical shifts and lineshapes of the terminal phosphate groups ...subsequent chemical shift ...
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Improved characterization of pure and formulated active pharmaceutical ingredients by fast magic angle spinning solid-state NMR spectroscopy
... compounds. Magic angle spinning In solution NMR the linewidths are typically narrow because the molecules isotopically tumble in the liquid ...and chemical shift anisotropy ...
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Multiple-spin effects in fast magic angle spinning Lee-Goldburg cross-polarization experiments in uniformly labeled compounds
... tizations are first flipped down by a 90° pulse to a direction perpendicular to the effective phase modulated Lee– Goldburg 共 PMLG 兲 field and then allowed to evolve during a time t 1 according to their scaled ...
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A fast magic angle spinning three dimensional NMR experiment for simultaneously probing H H and N H proximities in solids
... NMR chemical shift calculations used a plane-wave basis set and the PBE exchange correlation functional 48,49 at a basis cuto ff energy of 600 eV with integrals taken over the Brillouin zone by using a ...
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Strong coupling induced damping of spin echo modulations in magic angle spinning NMR:implications for J coupling measurements in disordered solids
... the chemical shift tensors (with ...the chemical shifts are irrelevant for this analysis: only the differences in isotropic chemical shift within each spin system are important, ...
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Mesoporous Silica Nanoparticles Loaded with Surfactant: Low Temperature Magic Angle Spinning 13C and 29Si NMR Enhanced by Dynamic Nuclear Polarization
... isotropic chemical shift (Figure 4a) under steady-state conditions to model the 1 H spin di ffusion between two adjacent TOTAPOL Figure ...rotors spinning at 10 kHz, using a Bruker BioSpin ...
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Accessibility and Location of Acid Sites in Zeolites as Probed by Fourier Transform Infrared Spectroscopy and Magic Angle Spinning Nuclear Magnetic Resonance279-290
... large chemical shift range and high sensitivity being 100% naturally ...distinct chemical shift range for each type of ...acid chemical shift range and volatility of the probe ...
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Additive Effects of Rare Earth Ions in Sodium Aluminoborate Glasses Using 23Na and 27Al Magic Angle Spinning Nuclear Magnetic Resonance
... of B ratio was almost constant around 10%. Therefore, it is expected that the chemical shift of 23 Na NMR spectra was not affected by the boron coordination. The relationship between the Al coordination ...
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Thermometers for low temperature Magic Angle Spinning NMR
... Discussion Figure 4 shows the potential precision of each of the thermometers discussed in this paper. This is based upon a 5 % error in the T 1 measurements for KBr as, although individual fits may have high levels of ...
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Structure of ancient glass by 29Si magic angle spinning NMR
... probe spinning at 5 kHz. Relatively low spinning rates were used to allow large sample volumes, and at the low magnetic field employed here these were sufficient to separate the first order spinning ...
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High-Field Magic Angle Spinning Dynamic Nuclear Polarization Using Radicals Created by γ-Irradiation
... to be polarized which provides an attractive means at enhancing SSNMR in inorganic materials. Also, since there is no need to add solvent or exogenous radicals, the method may be useful for examining reactive materials ...
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High-resolution magic angle spinning NMR studies for metabolic characterization of Arabidopsis thaliana mutants with enhanced growth characteristics
... glutamic acid, L-glycine and L-tyrosine were decreased relative to Col-0. This decline is consis- tent with overall decrease in total free amino acids shown in Table 1. The pattern of decline in these amino acids may be ...
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Characterization of metabolites in infiltrating gliomas using ex vivo &supl;H high-resolution magic angle spinning spectroscopy.
... area under the curve; Bet, betaine; Cho, free choline; CNI, choline to N-acetylaspartate index; CPMG, Carr –Purcell–Meiboom–Gill (NMR pulse sequence); Cr, PCr, creatine, phospho- creatine; ERETIC, electronic ...
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Enhancing the Sensitivity of Solid-State NMR Experiments with Very Low Gyromagnetic Ratio Nuclei with Fast Magic Angle Spinning and Proton Detection
... are much shorter than was required for the other samples and reflect the short 1 H T 1ρ (Figure S5). The 1 H T 2 ’ during SR 4 1 2 recoupling was also under 1 ms, which causes a rapid loss of magnetization during ...
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Metabolic Profiling of Intact Arabidopsis thaliana Leaves during Circadian Cycle Using 1H High Resolution Magic Angle Spinning NMR.
... used in previous study as well as extraction methods used which cause the release of malic acid from different compartments in the plant cells. Malic acid is dominantly compartmentalised in vacuole [30,31]. In our study, ...
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The use of a selective saturation pulse to suppress t1 noise in two dimensional 1H fast magic angle spinning solid state NMR spectroscopy
... 2.2. Solid-state NMR experiments All solid-state NMR experiments were performed at 16.4 T on a JEOL solid-state NMR spectrometer (JEOL ECA700II) operating at a 1 H Larmor frequency of 700 MHz and equipped with a 1.0 mm ...
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Towards real time metabolic profiling of a biopsy specimen during a surgical operation by 1H high resolution magic angle spinning nuclear magnetic resonance: a case report
... performed under extemporaneous condi- tions can answer this question ...resolution magic angle spinning nuclear magnetic resonance (HRMAS NMR) spectroscopy [1-3] has the potential to ...
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