Abstract The DREAM scheme is an efficient adiabatic homonuclear polarization-transfer method suitable for multi-dimensional experiments in biomolecular solid-state NMR. The bandwidth and dynamics of the polarization transfer in the DREAM experiment depend on a number of experimental and spin-system parameters. In order to obtain optimal results, the dependence of the cross-peak intensity on these parameters needs to be understood and carefully controlled. We introduce a simplified model to semi-quantitatively describe the polarization-transfer patterns for the relevant spin systems. Numerical simulations for all natural amino acids (except tryptophane) show the dependence of the cross-peak intensities as a function of the radio-frequency-carrier position. This dependency can be used as a guide to select the desired conditions in protein spectroscopy. Practical guidelines are given on how to set up a DREAM experiment for optimized Cα/Cβ transfer, which is important in sequential assignment experiments.
Content Type Journal Article
Category Article
Pages 1-10
DOI 10.1007/s10858-012-9627-4
Authors
Thomas Westfeld, Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
Visualizing the principal component of 1H,15N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C
Visualizing the principal component of 1H,15N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C
Abstract Laboratories often repeatedly determine the structure of a given protein under a variety of conditions, mutations, modifications, or in a number of states. This approach can be cumbersome and tedious. Given then a database of structures, identifiers, and corresponding 1H,15N-HSQC NMR spectra for homologous proteins, we investigated whether structural information could be ascertained for a new homolog solely from its...
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09-30-2011 08:01 PM
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
J Biomol NMR. 2011 Sep;51(1-2):115-22
Authors: Robertson IM, Boyko RF, Sykes BD
Abstract
Laboratories often repeatedly determine the structure of a given protein under a variety of conditions,...
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09-30-2011 06:00 AM
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
Visualizing the principal component of (1)H, (15)N-HSQC NMR spectral changes that reflect protein structural or functional properties: application to troponin C.
J Biomol NMR. 2011 Sep;51(1-2):115-22
Authors: Robertson IM, Boyko RF, Sykes BD
Abstract
Laboratories often repeatedly determine the structure of a given protein under a variety of conditions,...
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09-30-2011 05:59 AM
Optimization of NMR spectroscopy of encapsulated proteins dissolved in low viscosity fluids
Optimization of NMR spectroscopy of encapsulated proteins dissolved in low viscosity fluids
Abstract Comprehensive application of solution NMR spectroscopy to studies of macromolecules remains fundamentally limited by the molecular rotational correlation time. For proteins, molecules larger than 30 kDa require complex experimental methods, such as TROSY in conjunction with isotopic labeling schemes that are often expensive and generally reduce the potential information available. We have developed the reverse micelle encapsulation strategy as an alternative approach. Encapsulation of...
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07-15-2011 09:10 PM
Optimization of NMR spectroscopy of encapsulated proteins dissolved in low viscosity fluids.
Optimization of NMR spectroscopy of encapsulated proteins dissolved in low viscosity fluids.
Optimization of NMR spectroscopy of encapsulated proteins dissolved in low viscosity fluids.
J Biomol NMR. 2011 Jul 12;
Authors: Nucci NV, Marques BS, Bédard S, Dogan J, Gledhill JM, Moorman VR, Peterson RW, Valentine KG, Wand AL, Wand AJ
Comprehensive application of solution NMR spectroscopy to studies of macromolecules remains fundamentally limited by the molecular rotational correlation time. For proteins, molecules larger than 30*kDa require complex...
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07-13-2011 06:42 PM
Optimization of amino acid type-specific (13)C and (15)N labeling for the backbone assignment of membrane proteins by solution- and solid-state NMR with the UPLABEL algorithm.
Optimization of amino acid type-specific (13)C and (15)N labeling for the backbone assignment of membrane proteins by solution- and solid-state NMR with the UPLABEL algorithm.
Optimization of amino acid type-specific (13)C and (15)N labeling for the backbone assignment of membrane proteins by solution- and solid-state NMR with the UPLABEL algorithm.
J Biomol NMR. 2010 Dec 18;
Authors: Hefke F, Bagaria A, Reckel S, Ullrich SJ, Dötsch V, Glaubitz C, Güntert P
We present a computational method for finding optimal labeling patterns for the backbone...
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12-21-2010 01:00 PM
Optimization of amino acid type-specific 13C and 15N labeling for the backbone assignment of membrane proteins by solution- and solid-state NMR with the UPLABEL algorithm
Optimization of amino acid type-specific 13C and 15N labeling for the backbone assignment of membrane proteins by solution- and solid-state NMR with the UPLABEL algorithm
Abstract We present a computational method for finding optimal labeling patterns for the backbone assignment of membrane proteins and other large proteins that cannot be assigned by conventional strategies. Following the approach of Kainosho and Tsuji (Biochemistry 21:6273â??6279 (1982)), types of amino acids are labeled with 13C or/and 15N such that cross peaks between 13CO(i â?? 1) and 15NH(i) result only for pairs...
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12-21-2010 02:14 AM
[NMR paper] Dynamic properties of proteins from NMR spectroscopy.
Dynamic properties of proteins from NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Dynamic properties of proteins from NMR spectroscopy.
Curr Opin Biotechnol. 1993 Aug;4(4):385-91
Authors: Palmer AG
Two-dimensional proton-detected heteronuclear nuclear magnetic resonance spectroscopy has been used to measure 13C and 15N spin-relaxation rate constants for several proteins. Generalized order parameters and effective internal correlation times have been...
Properties of the DREAM scheme and its optimization for application to proteins
Linear Mode
