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Schmidt-Rohr K. Complete Dipolar Decoupling of 13C and Its Use in Two-Dimensional Double-Quantum Solid-State NMR for Determining Polymer Conformations. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 1998; 131:209-217. [PMID: 9571095 DOI: 10.1006/jmre.1998.1360] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A multiple-pulse technique for complete dipolar decoupling of directly bonded 13C-labeled sites is described. It achieves significant spectral simplifications in a recently introduced two-dimensional double-quantum solid-state NMR experiment for determining torsion angles. Both homonuclear and heteronuclear dipolar couplings are removed by combining a 13C multiple-pulse sequence with continuous-wave irradiation on the protons. The 13C sequence has a fundamental 10-pulse cycle which is a significantly modified magic-sandwich-echo sequence. The crucial heteronuclear decoupling is achieved by breaking the 360 degrees "inner" pulses in the magic sandwich into 90 degrees pulses and spacing them by 1H 360 degrees pulse lengths. Spectral artifacts typical of multiple-pulse sequences are eliminated by phase shifts between cycles. In contrast to many other multiple-pulse decoupling sequences, the long window in the cycle is the dwell time and can be longer than the inverse dipolar coupling, which makes the sequence practical for direct detection even with long pulse ring-down times. A modification of the sequence to scale the chemical shift and increase the effective spectral width is also presented. The 1D and double-quantum 2D experiments are demonstrated on polyethylene with 4% 13C-13C spin pairs. The potential of this approach for distinguishing segmental conformations is illustrated by spectral simulations of the two-dimensional ridge patterns that correlate double-quantum and single-quantum chemical-shift anisotropies. Copyright 1998 Academic Press.
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Affiliation(s)
- K Schmidt-Rohr
- Department of Polymer Science & Engineering and Materials Research Science & Engineering Center, University of Massachusetts, Amherst, Massachusetts, 01003
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102
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Kiihne S, Mehta MA, Stringer JA, Gregory DM, Shiels JC, Drobny GP. Distance Measurements by Dipolar Recoupling Two-Dimensional Solid-State NMR. J Phys Chem A 1998. [DOI: 10.1021/jp9721412] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Kiihne
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
| | - M. A. Mehta
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
| | - J. A. Stringer
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
| | - D. M. Gregory
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
| | - J. C. Shiels
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
| | - G. P. Drobny
- Departments of Chemistry and Physics, University of Washington, Seattle, Washington 98195
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103
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Goetz JM, Schaefer J. Orientational information in solids from REDOR sidebands. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 1997; 129:222-223. [PMID: 9441889 DOI: 10.1006/jmre.1997.1269] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- J M Goetz
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA
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104
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Sun BQ, Rienstra CM, Costa PR, Williamson JR, Griffin RG. 3D 15N−13C−13C Chemical Shift Correlation Spectroscopy in Rotating Solids. J Am Chem Soc 1997. [DOI: 10.1021/ja970073r] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B.-Q. Sun
- Contribution from the Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, and Department of Chemistry, Brandeis University, Waltham, Massachusetts 02254-9110
| | - C. M. Rienstra
- Contribution from the Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, and Department of Chemistry, Brandeis University, Waltham, Massachusetts 02254-9110
| | - P. R. Costa
- Contribution from the Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, and Department of Chemistry, Brandeis University, Waltham, Massachusetts 02254-9110
| | - J. R. Williamson
- Contribution from the Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, and Department of Chemistry, Brandeis University, Waltham, Massachusetts 02254-9110
| | - R. G. Griffin
- Contribution from the Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, and Department of Chemistry, Brandeis University, Waltham, Massachusetts 02254-9110
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105
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Dusold S, Klaus E, Sebald A, Bak M, Nielsen NC. Magnitudes and Relative Orientations of Chemical Shielding, Dipolar and J Coupling Tensors for Isolated 31P−31P Spin Pairs Determined by Iterative Fitting of 31P MAS NMR Spectra. J Am Chem Soc 1997. [DOI: 10.1021/ja970890r] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Dusold
- Contribution from the Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
| | - Elke Klaus
- Contribution from the Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
| | - Angelika Sebald
- Contribution from the Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
| | - Mads Bak
- Contribution from the Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
| | - Niels Chr. Nielsen
- Contribution from the Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Department of Chemistry, University of Aarhus, DK-8000 Aarhus C, Denmark
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106
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Gregory DM, Mehta MA, Shiels JC, Drobny GP. Determination of local structure in solid nucleic acids using double quantum nuclear magnetic resonance spectroscopy. J Chem Phys 1997. [DOI: 10.1063/1.474350] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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107
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Dollase WA, Feike M, Förster H, Schaller T, Schnell I, Sebald A, Steuernagel S. A 2D 31P MAS NMR Study of Polycrystalline Cd3(PO4)2. J Am Chem Soc 1997. [DOI: 10.1021/ja9636808] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- W. A. Dollase
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - M. Feike
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - H. Förster
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - T. Schaller
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - I. Schnell
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - A. Sebald
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
| | - S. Steuernagel
- Contribution from the Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz, Germany, Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Bruker Analytische Messtechnik GmbH, Silberstreifen, D-76287 Rheinstetten, Germany
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108
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Baldus M, Iuliucci RJ, Meier BH. Probing Through-Bond Connectivities and Through-Space Distances in Solids by Magic-Angle-Spinning Nuclear Magnetic Resonance. J Am Chem Soc 1997. [DOI: 10.1021/ja9622259] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Baldus
- Contribution from the NSR-Center for Molecular Structure, Design and Synthesis, Laboratory of Physical Chemistry, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
| | - R. J. Iuliucci
- Contribution from the NSR-Center for Molecular Structure, Design and Synthesis, Laboratory of Physical Chemistry, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
| | - B. H. Meier
- Contribution from the NSR-Center for Molecular Structure, Design and Synthesis, Laboratory of Physical Chemistry, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
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109
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Abstract
The passage of molecules and information across cell membranes is mediated largely by membrane-spanning proteins acting as channels, pumps, receptors and enzymes. These proteins perform many tasks: they control electrochemical gradients across the membrane, receive signals from the environment or from other cells, convert light energy into chemical signals, transport small molecules into and out of cells, and harness proton gradients to generate the energy consumed in metabolism. Indeed, of the estimated 50000–100000 genes in the human genome, fully 20–40 % are thought to encode integral membrane proteins. If one also includes membrane-associated proteins, which are attached to the membrane surface through fatty acyl chains or electrostatic interactions, this percentage is likely to be much higher.
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Affiliation(s)
- S O Smith
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520-8114, USA
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110
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Mehta MA, Gregory DM, Kiihne S, Mitchell DJ, Hatcher ME, Shiels JC, Drobny GP. Distance measurements in nucleic acids using windowless dipolar recoupling solid state NMR. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1996; 7:211-228. [PMID: 9050159 DOI: 10.1016/s0926-2040(96)01267-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A windowless, homonuclear dipolar recoupling pulse sequence (DRAWS) is described and a theoretical basis for describing its recoupling performance is developed using numerical techniques. It is demonstrated that DRAWS recouples weak dipolar interactions over a broad range of experimental and molecular conditions. We discuss two spectroscopic control experiments, which help to take into account effects due to insufficient proton decoupling, relaxation, and static dipolar couplings to nearby 13C spins at natural abundance. Finally DRAWS is used in combination with selective 13C labeling to measure 13C-13C distances in five doubly labeled DNA dodecamers, [d(CGCGAAT*T*CGCG)]2, which contain the binding site for the restriction enzyme EcoRI. The longest distance reported is 4.8 A. In most cases the distances agree well with those derived from X-ray crystallographic data, although small changes in hydration level can result in relatively large changes in internuclear distances.
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Affiliation(s)
- M A Mehta
- Department of Chemistry, University of Washington, Seattle 98195, USA
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111
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Tycko R, Weliky DP, Berger AE. Investigation of molecular structure in solids by two‐dimensional NMR exchange spectroscopy with magic angle spinning. J Chem Phys 1996. [DOI: 10.1063/1.472708] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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112
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Tycko R. Prospects for resonance assignments in multidimensional solid-state NMR spectra of uniformly labeled proteins. JOURNAL OF BIOMOLECULAR NMR 1996; 8:239-51. [PMID: 8953215 DOI: 10.1007/bf00410323] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The feasibility of assigning the backbone 15N and 13C NMR chemical shifts in multidimensional magic angle spinning NMR spectra of uniformly isotopically labeled proteins and peptides in unoriented solid samples is assessed by means of numerical simulations. The goal of these simulations is to examine how the upper limit on the size of a peptide for which unique assignments can be made depends on the spectral resolution, i.e., the NMR line widths. Sets of simulated three-dimensional chemical shift correlation spectra for artificial peptides of varying length are constructed from published liquid-state NMR chemical shift data for ubiquitin, a well-characterized soluble protein. Resonance assignments consistent with these spectra to within the assumed spectral resolution are found by a numerical search algorithm. The dependence of the number of consistent assignments on the assumed spectral resolution and on the length of the peptide is reported. If only three-dimensional chemical shift correlation data for backbone 15N and 13C nuclei are used, no residue-specific chemical shift information, information from amino acid side-chain signals, and proton chemical shift information are available, a spectral resolution of 1 ppm or less is generally required for a unique assignment of backbone chemical shifts for a peptide of 30 amino acid residues.
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Affiliation(s)
- R Tycko
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institute of Health, Bethesda, MD 20892-0520, USA
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113
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Abstract
Solid-state NMR experiments have recently provided a number of biochemical insights: motionally averaged 2H lineshapes have shown that the motion of a backbone loop protecting a protein binding site is not ligand gated; isotropic 13C chemical shifts of freeze-quenched enzyme-ligand intermediates have revealed mechanistic details of reaction pathways; multiple heteronuclear distance determinations have characterized the binding-site geometry of a 46 kDa noncrystalline enzyme complex; and homonuclear recoupling experiments have established that insoluble amyloid fibrils form a pleated beta sheet.
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Affiliation(s)
- L M McDowell
- Department of Chemistry, Washington University, St Louis, MO 63130, USA
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114
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Weliky DP, Tycko R. Determination of Peptide Conformations by Two-Dimensional Magic Angle Spinning NMR Exchange Spectroscopy with Rotor Synchronization. J Am Chem Soc 1996. [DOI: 10.1021/ja960178e] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David P. Weliky
- Laboratory of Chemical Physics National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health Bethesda, Maryland 20892-0520
| | - Robert Tycko
- Laboratory of Chemical Physics National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health Bethesda, Maryland 20892-0520
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115
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