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Herbert-Pucheta JE, Pelupessy P, Bodenhausen G, Tekely P. Restoring symmetry in two-dimensional solid-state NMR correlation spectra. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.05.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dumez JN, Emsley L. A master-equation approach to the description of proton-driven spin diffusion from crystal geometry using simulated zero-quantum lineshapes. Phys Chem Chem Phys 2011; 13:7363-70. [PMID: 21431110 DOI: 10.1039/c1cp00004g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Measurements of proton-driven carbon-13 spin diffusion (PDSD) by NMR spectroscopy are a central component of structural analyses of biomolecules in the solid-state. However, the quantitative link between experimental PDSD data and structural information is difficult to make. Here we observe that a master-equation approach can be used to model full PDSD dynamics accurately in polycrystalline (13)C-labelled L-histidine·HCl·H(2)O under magic-angle spinning. In the master-equation approach, PDSD rates and effective dipolar couplings are related by a function of the carbon-carbon zero-quantum lineshapes; we find that numerical simulations of the zero-quantum lineshapes are sufficiently accurate so as to allow the calculation of PDSD rates that are in good agreement with the measured rates, directly from crystal geometry and with no adjustable parameters. Finally, using carbon-carbon internuclear distances we illustrate the potential of the master-equation approach for structural studies. Generalisation of these results to proton-driven carbon-13 spin diffusion in more complex molecular systems is readily envisaged.
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Affiliation(s)
- Jean-Nicolas Dumez
- Université de Lyon (CNRS/ENS Lyon/UCB Lyon1), Centre de RMN à très hauts champs, 5 rue de la Doua, 69100 Villeurbanne, France
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Duma L, Abergel D, Ferrage F, Pelupessy P, Tekely P, Bodenhausen G. Broadband dipolar recoupling for magnetization transfer in solid-state NMR correlation spectroscopy. Chemphyschem 2008; 9:1104-6. [PMID: 18425737 DOI: 10.1002/cphc.200800053] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luminita Duma
- Département de Chimie, Associé au CNRS, Ecole Normale Supérieure, 24 Rue Lhomond, 75231 Paris, France
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Luo W, Hong M. Determination of the oligomeric number and intermolecular distances of membrane protein assemblies by anisotropic 1H-driven spin diffusion NMR spectroscopy. J Am Chem Soc 2007; 128:7242-51. [PMID: 16734478 DOI: 10.1021/ja0603406] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Determination of the high-resolution quaternary structure of oligomeric membrane proteins requires knowledge of both the oligomeric number and intermolecular distances. The centerband-only detection of exchange (CODEX) technique has been shown to enable the extraction of the oligomeric number through the equilibrium exchange intensity at long mixing times. To obtain quantitative distances, we now provide an analysis of the mixing-time-dependent CODEX intensities using the 1H-driven spin diffusion theory. The exchange curve is fit to a rate equation, where the rate constants are proportional to the square of the dipolar coupling and the spectral overlap integral between the exchanging spins. Using a number of 13C- and 19F-labeled crystalline model compounds with known intermolecular distances, we empirically determined the overlap integrals of 13C and 19F CODEX for specific spinning speeds and chemical shift anisotropies. These consensus overlap integral values can be applied to structurally unknown systems to determine distances. Applying the 19F CODEX experiment and analysis, we studied the transmembrane peptide of the M2 protein (M2TMP) of influenza A virus bound to 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine bilayers. The experiment proved for the first time that M2TMP associates as tetramers in lipid bilayers, similar to its oligomeric state in detergent micelles. Moreover, the nearest-neighbor interhelical F-F distance between (4-19F)Phe30 is 7.9-9.5 angstroms. This distance constrains the orientation and the packing of the helices in the tetrameric bundle and supports the structural model derived from previous solid-state NMR 15N orientational data. Thus, the CODEX technique presents a general method for determining the oligomeric number and intermolecular distances in the approximately 10 angstroms range in membrane proteins and other complex biological assemblies.
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Affiliation(s)
- Wenbin Luo
- Department of Chemistry, Iowa State University, Gilman 0108, Ames, Iowa 50011, USA
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Tadeusiak EJ, Ciesielski W, Olejniczak S. The determination of enantiomeric excess of valine by ODESSA solid-state NMR experiment. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2006; 44:905-8. [PMID: 16835889 DOI: 10.1002/mrc.1861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The enantiomeric excess (ee) can be determined by many methods; one among them is nuclear magnetic resonance in solid-state (SS NMR). In this study we used the SS NMR ODESSA experiment for determination of the ee of valine.
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Affiliation(s)
- Elzbieta J Tadeusiak
- Department of Structural Studies, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland.
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Potrzebowski MJ, Assfeld X, Ganicz K, Olejniczak S, Cartier A, Gardiennet C, Tekely P. An experimental and theoretical study of the 13C and 31P chemical shielding tensors in solid O-phosphorylated amino acids. J Am Chem Soc 2003; 125:4223-32. [PMID: 12670244 DOI: 10.1021/ja029840z] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of l and dl forms of O-phosphorylated amino acids (serine, threonine, tyrosine) have been studied by using solid-state multinuclear NMR spectroscopy and ab initio calculations. Principal elements of the (13)C and (31)P chemical shielding tensors have been measured and discussed in relation to zwitterionic structures and intermolecular contacts. DFT calculations have been compared with experimental data showing their ability to reproduce experimentally obtained tensor values in this challenging class of compounds. The changes of orientation of (31)P chemical shielding tensor with respect to the molecular frame in the presence of hydrogen bonds have been revealed and discussed on the ground of theoretical calculations. The measurements of internuclear P...P distances, based on Zeeman magnetization exchange between (31)P spins with differing chemical shielding tensor orientations, were exploited for a clear distinction between enantiomers and racemates.
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Affiliation(s)
- Marek J Potrzebowski
- Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, 90-363 Łódź, Poland
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Potrzebowski M. What High‐Resolution Solid‐State NMR Spectroscopy Can Offer to Organic Chemists. European J Org Chem 2003. [DOI: 10.1002/ejoc.200390192] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marek J. Potrzebowski
- NMR Laboratory and Department of Structural Studies of the Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90−363 Łódź, Poland, Fax: (internat) + 48‐42/6847126
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Tekely P, Gardiennet C, Potrzebowski MJ, Sebald A, Reichert D, Luz Z. Probing molecular geometry of solids by nuclear magnetic resonance spin exchange at the n=0 rotational-resonance condition. J Chem Phys 2002. [DOI: 10.1063/1.1465416] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wawer I, Nartowska A, Cichowlas AA. 13C cross-polarization MAS NMR study of some steroidal sapogenins. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2001; 20:35-45. [PMID: 11529418 DOI: 10.1006/snmr.2001.0028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cross-polarization (CP) magic angle spinning (MAS) solid-state 13C NMR spectra of five steroidal sapogenins: tigogenin ((25R)-5alpha-spirostan-3beta-ol), hecogenin (3beta-hydroxy-(25R)-5alpha-spirostan-12-one), diosgenin ((delta5-(25R)-5alpha-spirosten-3beta-ol), sarsasapogenin ((25S)-55beta-spirostan-3beta-ol), and smilagenin ((25R)-5beta-spirostan-3beta-ol) were recorded. The solid-state chemical shifts are almost the same as for solution, which indicate that confirmations of sapogenins are similar in both phases. The doubling of some resonances in the spectra of solid diosgenin shows that there are two molecules in the crystallographic asymmetric unit. The cross-polarization time constants T(CP) and relaxation times in the rotating frame T(1rho)H were obtained from the variable-contact cross-polarization experiments for tigogenin and diosgenin. The values of T(CH) for methyl carbons indicate fast rotation of methyl groups and are close (0.30-0.35 ms), suggesting that the interaction with their intramolecular neighbors is similar. The values of T(1rho)H for carbons of tigogenin are longer than of diosgenin. Very efficient cross-polarization dynamics results in short time required for obtaining a spectrum of sapogenin of remarkably good quality.
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Affiliation(s)
- I Wawer
- Department of Physical Chemistry, Faculty of Pharmacy Medical University of Warsaw, Poland
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Reichert D, Bonagamba TJ, Schmidt-Rohr K. Slow-down of 13C spin diffusion in organic solids by fast MAS: a CODEX NMR Study. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2001; 151:129-135. [PMID: 11444947 DOI: 10.1006/jmre.2001.2337] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
One- and two-dimensional 13C exchange nuclear magnetic resonance experiments under magic-angle spinning (MAS) can provide detailed information on slow segmental reorientations and chemical exchange in organic solids, including polymers and proteins. However, observations of dynamics on the time scale of seconds or longer are hampered by the competing process of dipolar 13C spin exchange (spin diffusion). In this Communication, we show that fast MAS can significantly slow down the dipolar spin exchange effect for unprotonated carbon sites. The exchange is measured quantitatively using the centerband-only detection of exchange technique, which enables the detection of exchange at any spinning speed, even in the absence of changes of isotropic chemical shifts. For chemically equivalent unprotonated 13C sites, the dipolar spin exchange rate is found to decrease slightly less than proportionally with the sample-rotation frequency, between 8 and 28 kHz. In the same range, the dipolar spin exchange rate for a glassy polymer with an inhomogeneously broadened MAS line decreases by a factor of 10. For methylene groups, no or only a minor slow-down of the exchange rate is found.
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Affiliation(s)
- D Reichert
- FB Physik, Martin-Luther Universität Halle-Wittenberg, Halle, 06108, Germany
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Potrzebowski MJ, Tekely P, Błaszczyk J, Wieczorek MW. X-ray and 13C solid-state NMR studies of N-benzoyl-phenylalanine. THE JOURNAL OF PEPTIDE RESEARCH : OFFICIAL JOURNAL OF THE AMERICAN PEPTIDE SOCIETY 2000; 56:185-94. [PMID: 11083057 DOI: 10.1034/j.1399-3011.2000.00756.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A crystalline sample of N-benzoyl-DL-phenylalanine 1 and a polycrystalline sample of N-benzoyl-L-phenylalanine 2 were studied using 13C high-resolution solid-state NMR spectroscopy. The X-ray structure of the DL form was established. Sample 1 crystallizes in a monoclinic form with a P21/c space group, a=11.338(1) A, b=9.185(1) A, c=14.096(2) A, beta=107.53(3) degrees, V=1400(3) A3, Z=4 and R=0.053. The principal elements of the 13C chemical shift tensors deltaii for 1 and 2, selectively 13C (99%) labeled at the carboxyl groups were calculated. On the basis of 13C (delta)ii analysis the hydrogen bonding pattern for sample 2 was deduced. Enriched samples were used to establish the intermolecular distance between chemically equivalent nuclei for 1 and spatial proximity in heterogeneous domain for 2, employing the ODESSA pulse sequence. The consistence of the complementary approach covering X-ray data, analysis of the 13C (delta)ii parameters and ODESSA results is revealed.
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Affiliation(s)
- M J Potrzebowski
- Polish Academy of Sciences, Centre of Molecular and Macromolecular Studies, Sienkiewicza, Lódź, Poland.
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Tekely P, Reichert D, Zimmermann H, Luz Z. Initial conditions for carbon-13 MAS NMR 1D exchange involving chemically equivalent and inequivalent nuclei. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2000; 145:173-183. [PMID: 10910685 DOI: 10.1006/jmre.2000.2092] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A major problem in dynamic 1D (13)C MAS NMR concerns the exchange between magnetically inequivalent, but chemically equivalent sites, whose signals are not resolved in the regular 1D spectrum. This difficulty may be overcome by properly preparing the initial nonequilibrium state of the spin system in the exchange experiments. In the present paper we discuss the advantages and limitations of several such experiments already in use and propose a new sequence, which we term SELDOM-ODESSA. Unlike the other 1D-exchange methods, this experiment yields pure absorption spectra that can more readily be analyzed quantitatively. The experiment is a hybrid comprising a SELDOM sequence, for selective excitation of one of the spinning sideband manifolds in the spectrum, followed by the ODESSA sequence, which induces alternate polarization in the excited sideband manifold. The evolution of the spectrum following this sequence provides information on both the exchange between congruent sites belonging to the same group of equivalent nuclei, and the exchange between inequivalent sites. Results are presented for a tropolone sample specifically enriched in carbon-13 at the carbonyl and hydroxyl sites. The dominant exchange mechanism in this sample involves spin diffusion. The various spin exchange processes in this sample, in the presence and absence of proton decoupling during the mixing time, are measured and discussed. Copyright 2000 Academic Press.
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Affiliation(s)
- P Tekely
- Laboratoire de Methodologie RMN, UPRESA CNRS 7042, Universite Henri Poincare, Nancy 1, Vandoeuvre-les-Nancy, 54506, France
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Potrzebowski M, Schneider C, Tekely P. Hydrogen bonding pattern in N-benzoyl(-dl-)-l-phenylalanines as revealed by solid-state NMR spectroscopy. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)01136-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tekely P. To what extent does the centerband and each spinning sideband contain contributions from different crystallites of the powder sample? SOLID STATE NUCLEAR MAGNETIC RESONANCE 1999; 14:33-41. [PMID: 10408273 DOI: 10.1016/s0926-2040(99)00007-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
It is shown that due to the destructive interference of the magnetization paths of crystallites taking place during the rotor period at slow spinning regime, the contribution of different crystallites to the centerband and to each spinning sideband is strongly weighted. For this, a separated-local-field experiment is used to tag the crystallites contributing to a given spinning sideband at different spinning speeds. The orientation dependence of spinning sidebands is also responsible for different lineshapes of the centerband and of each spinning sidebands observed under conditions of off-magic angle spinning.
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Affiliation(s)
- P Tekely
- Laboratoire de Méthodologie RMN, UPRESA CNRS 7042, Université H. Poincaré, Vandoeuvre-lès-Nancy, France.
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