Related ArticlesDipolar Waves as NMR maps of helices in proteins.
J Magn Reson. 2003 Aug;163(2):288-99
Authors: Mesleh MF, Opella SJ
Dipolar Waves describe the periodic variation in the magnitudes of dipolar couplings in the backbone of a protein as a function of residue number. They provide a direct link between experimental measurements of dipolar couplings in aligned samples and the periodicity inherent in regular secondary structure elements. It is possible to identify the residues in a helix and the type of helix, deviations from ideality, and to orient the helices relative to an external axis in completely aligned samples and relative to each other in a common frame in weakly aligned samples with Dipolar Waves. They provide a tool for accurately describing helices and a step towards high throughput structure determination of proteins.
Backbone assignment of perdeuterated proteins using long-range H/C-dipolar transfers
Backbone assignment of perdeuterated proteins using long-range H/C-dipolar transfers
Abstract For micro-crystalline proteins, solid-state nuclear magnetic resonance spectroscopy of perdeuterated samples can provide spectra of unprecedented quality. Apart from allowing to detect sparsely introduced protons and thereby increasing the effective resolution for a series of sophisticated techniques, deuteration can provide extraordinary coherence lifetimesâ??obtainable for all involved nuclei virtually without decoupling and enabling the use of scalar magnetization transfers. Unfortunately,...
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12-17-2011 04:44 AM
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
Top Curr Chem. 2011 Sep 28;
Authors: Chen K, Tjandra N
Abstract
The development of residual dipolar coupling (RDC) in protein NMR spectroscopy, over a decade ago, has become a useful and almost routine tool for accurate protein solution structure determination. RDCs provide orientation information of magnetic dipole-dipole interaction vectors within a common reference frame. Its measurement requires a...
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09-30-2011 06:00 AM
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
The Use of Residual Dipolar Coupling in Studying Proteins by NMR.
Top Curr Chem. 2011 Sep 28;
Authors: Chen K, Tjandra N
Abstract
The development of residual dipolar coupling (RDC) in protein NMR spectroscopy, over a decade ago, has become a useful and almost routine tool for accurate protein solution structure determination. RDCs provide orientation information of magnetic dipole-dipole interaction vectors within a common reference frame. Its measurement requires a...
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09-30-2011 05:59 AM
Rapid measurement of residual dipolar couplings for fast fold elucidation of proteins
Rapid measurement of residual dipolar couplings for fast fold elucidation of proteins
Abstract It has been demonstrated that protein folds can be determined using appropriate computational protocols with NMR chemical shifts as the sole source of experimental restraints. While such approaches are very promising they still suffer from low convergence resulting in long computation times to achieve accurate results. Here we present a suite of time- and sensitivity optimized NMR experiments for rapid measurement of up to six RDCs per residue. Including such an RDC data set, measured in less...
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09-17-2011 10:20 AM
[NMR paper] Dipolar waves as NMR maps of protein structure.
Dipolar waves as NMR maps of protein structure.
Related Articles Dipolar waves as NMR maps of protein structure.
J Am Chem Soc. 2002 Apr 24;124(16):4206-7
Authors: Mesleh MF, Veglia G, DeSilva TM, Marassi FM, Opella SJ
The anisotropy of nuclear spin interactions results in a unique mapping of structure to the resonance frequencies and split tings observed in NMR spectra, however, the determination of molecular structure from experimentally measured spectral parameters is complicated by angular ambiguities resulting from the symmetry properties...
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11-24-2010 08:49 PM
[NMR paper] Controlling residual dipolar couplings in high-resolution NMR of proteins by strain i
Controlling residual dipolar couplings in high-resolution NMR of proteins by strain induced alignment in a gel.
Related Articles Controlling residual dipolar couplings in high-resolution NMR of proteins by strain induced alignment in a gel.
J Biomol NMR. 2001 Oct;21(2):141-51
Authors: Ishii Y, Markus MA, Tycko R
Water-soluble biological macromolecules can be weakly aligned by dissolution in a strained, hydrated gel such as cross-linked polyacrylamide, an effect termed 'strain-induced alignment in a gel' (SAG). SAG induces nonzero nuclear...
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11-19-2010 08:44 PM
[NMR paper] Orienting domains in proteins using dipolar couplings measured by liquid-state NMR: d
Orienting domains in proteins using dipolar couplings measured by liquid-state NMR: differences in solution and crystal forms of maltodextrin binding protein loaded with beta-cyclodextrin.
Related Articles Orienting domains in proteins using dipolar couplings measured by liquid-state NMR: differences in solution and crystal forms of maltodextrin binding protein loaded with beta-cyclodextrin.
J Mol Biol. 2000 Feb 4;295(5):1265-73
Authors: Skrynnikov NR, Goto NK, Yang D, Choy WY, Tolman JR, Mueller GA, Kay LE
Protein function is often regulated...
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11-18-2010 09:15 PM
Theoretical framework for NMR residual dipolar couplings in unfolded proteins
Theoretical framework for NMR residual dipolar couplings in unfolded proteins
O. I. Obolensky, Kai Schlepckow, Harald Schwalbe and A. V. Solov’yov
Journal of Biomolecular NMR; 2007; 39(1) pp 1-16
Abstract:
A theoretical framework for the prediction of nuclear magnetic resonance (NMR) residual dipolar couplings (RDCs) in unfolded proteins under weakly aligning conditions is presented. The unfolded polypeptide chain is modeled as a random flight chain while the alignment medium is represented by a set of regularly arranged obstacles. For the case of bicelles oriented perpendicular to...