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Journal articles on the topic 'NMR Multiquanto'

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Published: 9 March 2023
Last updated: 10 March 2023

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1

Khitrin, A. K. "Intensities of coherences in multiquantum NMR." Physics Letters A 214, no. 1-2 (May 1996): 81–83. http://dx.doi.org/10.1016/0375-9601(96)00151-x.

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2

Samoson, Ago. "Multiquantum NMR of quadrupole nuclei with strong pulses." Chemical Physics Letters 247, no. 3 (December 1995): 203–6. http://dx.doi.org/10.1016/0009-2614(95)01293-0.

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3

Sanctuary, B. C. "Multipole NMR. X. Multispin, multiquantum, multilinear operator bases." Journal of Magnetic Resonance (1969) 61, no. 1 (January 1985): 116–29. http://dx.doi.org/10.1016/0022-2364(85)90272-0.

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4

Abelyashev, G. N., V. N. Berzhanskij, N. A. Sergeev, and Yu V. Fedotov. "Multiquantum effects and NMR in magnetically ordered substances." Physics Letters A 133, no. 4-5 (November 1988): 263–65. http://dx.doi.org/10.1016/0375-9601(88)91029-8.

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5

Fernandez, C., and J. P. Amoureux. "2D multiquantum MAS-NMR spectroscopy of 27Al in aluminophosphate molecular sieves." Chemical Physics Letters 242, no. 4-5 (August 1995): 449–54. http://dx.doi.org/10.1016/0009-2614(95)00768-y.

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6

Zobov, V. E., and A. A. Lundin. "On the second moment of the multiquantum NMR spectrum of a solid." Russian Journal of Physical Chemistry B 2, no. 5 (October 2008): 676–83. http://dx.doi.org/10.1134/s1990793108050035.

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7

Zobov, V. E., and A. A. Lundin. "Decay of multispin multiquantum coherent states in the NMR of a solid." Journal of Experimental and Theoretical Physics 112, no. 3 (March 2011): 451–59. http://dx.doi.org/10.1134/s1063776111020129.

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8

Porion, Patrice, Anne Marie Faugère, and Alfred Delville. "Multiscale Water Dynamics within Dense Clay Sediments Probed by 2H Multiquantum NMR Relaxometry and Two-Time Stimulated Echo NMR Spectroscopy." Journal of Physical Chemistry C 117, no. 49 (December 3, 2013): 26119–34. http://dx.doi.org/10.1021/jp4093354.

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9

FERNANDEZ, C., J. P. AMOUREUX, Y. DUMAZY, and L. DELEVOYE. "ChemInform Abstract: Multiquantum (3Q and 5Q) MAS NMR Spectroscopy of Aluminum-27 in Solids." ChemInform 29, no. 46 (June 19, 2010): no. http://dx.doi.org/10.1002/chin.199846290.

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10

Fechtenkötter, Andreas, Kay Saalwächter, Martha A. Harbison, Klaus Müllen, and Hans Wolfgang Spiess. "Hochgeordnete kolumnare Strukturen von Hexa-peri-hexabenzocoronenen – Synthese, Röntgenbeugung und heteronucleare Multiquanten-Festkörper-NMR-Untersuchungen." Angewandte Chemie 111, no. 20 (October 18, 1999): 3224–28. http://dx.doi.org/10.1002/(sici)1521-3757(19991018)111:20<3224::aid-ange3224>3.0.co;2-d.

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11

Porion, Patrice, Laurent J. Michot, Fabienne Warmont, Anne Marie Faugère, and Alfred Delville. "Long-Time Dynamics of Confined Water Molecules Probed by 2H NMR Multiquanta Relaxometry: An Application to Dense Clay Sediments." Journal of Physical Chemistry C 116, no. 33 (August 13, 2012): 17682–97. http://dx.doi.org/10.1021/jp305577g.

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12

Sarv, Priit, Christian Fernandez, Jean-Paul Amoureux, and Kari Keskinen. "Distribution of Tetrahedral Aluminium Sites in ZSM-5 Type Zeolites: An27Al (Multiquantum) Magic Angle Spinning NMR Study." Journal of Physical Chemistry 100, no. 50 (January 1996): 19223–26. http://dx.doi.org/10.1021/jp962519g.

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13

Temme, F. P., and B. C. Sanctuary. "Symmetry-adapted bases and projection superoperators of multiquantum NMR under the groups 2[x]2 and 4[x]2." Journal of Magnetic Resonance (1969) 69, no. 1 (August 1986): 1–27. http://dx.doi.org/10.1016/0022-2364(86)90214-3.

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14

Charretier, E., and M. Guéron. "Application de la résonance magnétique nucléaire à la détermination de la structure des protéines en solution." Biochemistry and Cell Biology 69, no. 5-6 (May 1, 1991): 322–35. http://dx.doi.org/10.1139/o91-051.

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Abstract:
Knowledge of three-dimensional structure is a key factor in protein engineering. It is useful, for example, in predicting and understanding the functional consequences of specific substitution of one or more amino acids of the polypeptide chain. It is also necessary for the design of new effectors or analogs of the substrates of enzymes and receptors. X-ray diffraction by crystals of the biomolecule was for a long time the only method of determining three-dimensional structures. In the last 5 years, it has been joined by a new technique, two-dimensional nuclear magnetic resonance (2D NMR), which can resolve the structure of middle-sized proteins ( < 10 kilodaltons). The technique is applied on solutions whose pH, ionic strength, and temperature can be chosen and changed. The two basic measurements, COSY and NOESY, detect respectively the systems of hydrogen nuclei, or protons, coupled through covalent bonds, and those in which the interproton distances are less than 0.5 nm. A systematic strategy leads from resonance assignments of the two-dimensional spectrum to molecular modeling with constraints and finally to the determination of the molecular structure in the solution. Much sophistication is needed even today for the first task, the assignment of the resonances. Each of the COSY and NOESY spectra is a two-dimensional map, where the diagonal line is the one-dimensional spectrum, and the off-diagonal peaks indicate connectivities between protons. Peak assignment to a specific type of amino acid is based on the pattern of scalar couplings observed in the COSY spectrum. Next, the amino acids are positioned in the primary sequence, using the spatial proximities of polypeptide chain protons, as observed in the NOESY spectrum. The principal secondary structures (α helix, β sheets, etc.) are then identified by their specific connectivities. The tertiary structure is detected by NOESY connectivities between protons of different amino acids which are far apart in the primary sequence. The distance constraints from the NOESY connectivities also provide the starting point for modeling the tertiary structure. This is then refined using distance geometry and molecular dynamics algorithms. The resolution of the structures obtained with the help of recent algorithmic developments may be comparable to that provided by X-ray diffraction. The COSY measurement can be completed or substituted by other measurements, useful albeit more complex. For example, the HOHAHA experiment, currently in wide use, gives the correlations through multiple covalent bonds. Multiquanta experiments, which select systems of a given number of coupled spins, provide spectral simplification. To help with the sequential assignment, which remains a limiting step, one may substitute amino acids isotopically labeled with 15N or 13C. Nuclear magnetic resonance of these nuclei is detected either directly or by heteronuclear proton NMR. In the latter case, heteronuclear cross-peaks indicate connectivities between protons and the isotopic nuclei, 1SN and 13C. This labeling is very useful for proteins with more than 100 amino acids and for proteins exhibiting low-resolution spectra. Resolution can also be enhanced by the combination of two-dimensional experiments, giving rise to 3D NMR. The graphic representation of a three-dimensional experiment is a cube whose sections correspond to virtual two-dimensional measurements. The 3D NMR can be homonuclear or, in the case of isotopically substituted proteins, heteronuclear. The time for a single experiment reaches several days. The memory needed for data acquisition and processing is greater than for two-dimensional experiments. Large parts of the data processing, such as peak detection or the recognition of secondary structure connectivities can be automated. Two-dimensional NMR is becoming a routine technique for peptide and protein structure determination in the laboratories of the pharmaceutical firms.Key words: protein engineering, three-dimensional structure, nuclear magnetic resonance, correlated spectroscopy, nuclear Overhauser effect spectroscopy.
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15

Vemulapalli, Sahithya Phani Babu, Stefan Becker, Christian Griesinger, and Nasrollah Rezaei-Ghaleh. "Combined High-Pressure and Multiquantum NMR and Molecular Simulation Propose a Role for N-Terminal Salt Bridges in Amyloid-Beta." Journal of Physical Chemistry Letters 12, no. 40 (October 7, 2021): 9933–39. http://dx.doi.org/10.1021/acs.jpclett.1c02595.

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16

Porion, Patrice, Anne Marie Faugère, Laurent J. Michot, Erwan Paineau, and Alfred Delville. "2H NMR Spectroscopy and Multiquantum Relaxometry as a Probe of the Magnetic-Field-Induced Ordering of Clay Nanoplatelets within Aqueous Dispersions." Journal of Physical Chemistry C 115, no. 29 (July 6, 2011): 14253–63. http://dx.doi.org/10.1021/jp203412n.

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17

Temme, F. P. "n-Adapted liouville space and multiquantum NMR. VI. Role of φq1 (11) polarizations in the spin dynamics of the spin system." Journal of Magnetic Resonance (1969) 83, no. 2 (June 1989): 383–89. http://dx.doi.org/10.1016/0022-2364(89)90200-x.

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18

Porion, Patrice, Anne Marie Faugère, and Alfred Delville. "Structural and Dynamical Properties of Water Molecules Confined within Clay Sediments Probed by Deuterium NMR Spectroscopy, Multiquanta Relaxometry, and Two-Time Stimulated Echo Attenuation." Journal of Physical Chemistry C 118, no. 35 (August 21, 2014): 20429–44. http://dx.doi.org/10.1021/jp506312q.

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19

Karunanithy, Gogulan, Jochen Reinstein, and D. Flemming Hansen. "Multiquantum Chemical Exchange Saturation Transfer NMR to Quantify Symmetrical Exchange: Application to Rotational Dynamics of the Guanidinium Group in Arginine Side Chains." Journal of Physical Chemistry Letters 11, no. 14 (June 16, 2020): 5649–54. http://dx.doi.org/10.1021/acs.jpclett.0c01322.

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20

Porion, Patrice, Anne Marie Faugère, and Alfred Delville. "7Li NMR Spectroscopy and Multiquantum Relaxation as a Probe of the Microstructure and Dynamics of Confined Li+ Cations: An Application to Dense Clay Sediments." Journal of Physical Chemistry C 112, no. 26 (June 11, 2008): 9808–21. http://dx.doi.org/10.1021/jp8010348.

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21

Davis, Donald G. "Proton NMR detection of long-range heteronuclear multiquantum coherences in proteins: the complete assignment of the quaternary aromatic carbon-13 chemical shifts in lysozyme." Journal of the American Chemical Society 111, no. 14 (July 1989): 5466–68. http://dx.doi.org/10.1021/ja00196a063.

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22

Temme, F. P. "On general forms for structure of some [n?1, 1] ? [?]L n n inner tensor products with 6 ?n? 20, (60) forn even, in the context of spin cluster problems of multiquantum NMR." Journal of Mathematical Chemistry 13, no. 1 (1993): 153–65. http://dx.doi.org/10.1007/bf01165561.

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23

LIVE, D. H., D. G. DAVIS, W. C. AGOSTA, and D. COWBURN. "ChemInform Abstract: OBSERVATION OF 1000-FOLD ENHANCEMENT OF NITROGEN-15 NMR VIA PROTON-DETECTED MULTIQUANTUM COHERENCES: STUDIES OF LARGE PEPTIDES." Chemischer Informationsdienst 16, no. 3 (January 22, 1985). http://dx.doi.org/10.1002/chin.198503051.

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