Abstract The development of methyl-TROSY approaches and specific 13Câ??1H labeling of Ile, Leu and Val methyl groups in highly deuterated proteins has made it possible to study high molecular weight proteins, either alone or in complexes, using solution nuclear magnetic resonance (NMR) spectroscopy. Here we present 2-dimensional (2D) and 3-dimensional (3D) NMR experiments designed to achieve complete separation of the methyl resonances of Val and Leu, labeled using the same precursor, α-ketoisovalerate or acetolactate. The 2D experiment can further select the methyl resonances of Val or Leu based on the Cα or Cβ chemical shift values of Val or Leu, respectively. In the 3D spectrum, the methyl cross peaks of Val and Leu residues have opposite signs; thus, not only can the residue types be easily distinguished, but the methyl pairs from the same residue can also be identified. The feasibility of this approach, implemented in both 2D and 3D experiments, has been demonstrated on an 82 kDa protein, malate synthase G. The methods developed in this study will reduce resonance overlaps and also facilitate structure-guided resonance assignments.
Content Type Journal Article
Category Article
Pages 1-12
DOI 10.1007/s10858-012-9629-2
Authors
Weidong Hu, Departments of Immunology and Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
Andrew T. Namanja, Departments of Immunology and Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
Steven Wong, Departments of Immunology and Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
Yuan Chen, Departments of Immunology and Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
Observation of a Tungsten Alkane ?-Complex Showing Selective Binding of Methyl Groups Using FTIR and NMR Spectroscopies
Observation of a Tungsten Alkane ?-Complex Showing Selective Binding of Methyl Groups Using FTIR and NMR Spectroscopies
Rowan D. Young, Douglas J. Lawes, Anthony F. Hill and Graham E. Ball
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja300281s/aop/images/medium/ja-2012-00281s_0005.gif
Journal of the American Chemical Society
DOI: 10.1021/ja300281s
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An optimized isotopic labelling strategy of isoleucine-?(2) methyl groups for solution NMR studies of high molecular weight proteins.
An optimized isotopic labelling strategy of isoleucine-?(2) methyl groups for solution NMR studies of high molecular weight proteins.
An optimized isotopic labelling strategy of isoleucine-?(2) methyl groups for solution NMR studies of high molecular weight proteins.
Chem Commun (Camb). 2011 Jul 26;
Authors: Ayala I, Hamelin O, Amero C, Pessey O, Plevin MJ, Gans P, Boisbouvier J
An efficient synthetic route is proposed to produce 2-hydroxy-2-ethyl-3-oxobutanoate for the specific labelling of Ile methyl-?(2) groups in proteins. The (2)H,...
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07-28-2011 10:51 AM
Selective 1H-13C NMR spectroscopy of methyl groups in residually protonated samples of large proteins
Selective 1H-13C NMR spectroscopy of methyl groups in residually protonated samples of large proteins
Abstract Methyl 13CHD2 isotopomers of all methyl-containing amino-acids can be observed in residually protonated samples of large proteins obtained from -glucose/D2O-based bacterial media, with sensitivity sufficient for a number of NMR applications. Selective detection of some subsets of methyl groups (Alaβ, Thrγ2) is possible using simple â??out-and-backâ?? NMR methodology. Such selective methyl-detected â??out-and-backâ?? NMR experiments allow complete assignments of threonine γ2...
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01-09-2011 12:46 PM
Methyl groups as probes of supra-molecular structure, dynamics and function
Methyl groups as probes of supra-molecular structure, dynamics and function
Abstract The development of new protein labeling strategies, along with optimized experiments that exploit the label, have significantly impacted on the types of biochemical problems that can now be addressed by solution NMR spectroscopy. Here we describe how methyl labeling of key residues in a highly deuterated protein background has facilitated studies of the structure, dynamics and interactions of supra-molecular particles. The methyl-labeling approach is briefly reviewed, followed by a summary of...
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Alanine Methyl Groups as NMR Probes of Molecular Structure and Dynamics in High-Molecular-Weight Proteins
Alanine Methyl Groups as NMR Probes of Molecular Structure and Dynamics in High-Molecular-Weight Proteins
Raquel Godoy-Ruiz, Chenyun Guo and Vitali Tugarinov
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja1083656/aop/images/medium/ja-2010-083656_0009.gif
Journal of the American Chemical Society
DOI: 10.1021/ja1083656
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12-08-2010 10:04 AM
[NMR paper] Quantitative NMR studies of high molecular weight proteins: application to domain ori
Quantitative NMR studies of high molecular weight proteins: application to domain orientation and ligand binding in the 723 residue enzyme malate synthase G.
Related Articles Quantitative NMR studies of high molecular weight proteins: application to domain orientation and ligand binding in the 723 residue enzyme malate synthase G.
J Mol Biol. 2003 Apr 11;327(5):1121-33
Authors: Tugarinov V, Kay LE
A high-resolution multidimensional NMR study of ligand-binding to Escherichia coli malate synthase G (MSG), a 723-residue monomeric enzyme (81.4...
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[NMR paper] Backbone NMR assignments of a high molecular weight protein (47 kDa), cyclic AMP rece
Backbone NMR assignments of a high molecular weight protein (47 kDa), cyclic AMP receptor protein (apo-CRP)
Related Articles Backbone NMR assignments of a high molecular weight protein (47 kDa), cyclic AMP receptor protein (apo-CRP)
J Biomol NMR. 2000 Jan;16(1):79-80
Authors: Won HS, Yamazaki T, Lee TW, Jee JG, Yoon MK, Park SH, Otomo T, Aiba H, Kyogoku Y, Lee BJ
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High Resolution 1H Detected 1H,13C Correlation Spectra in MAS Solid-State NMR using Deuterated Proteins with Selective 1H,2H Isotopic Labeling of Methyl Groups
High Resolution <SUP>1</SUP>H Detected <SUP>1</SUP>H,<SUP>13</SUP>C Correlation Spectra in MAS Solid-State NMR using Deuterated Proteins with Selective <SUP>1</SUP>H,<SUP>2</SUP>H Isotopic Labeling of Methyl Groups
Vipin Agarwal, Anne Diehl, Nikolai Skrynnikov, and Bernd Reif
J. Am. Chem. Soc.; 2006; 128(39) pp 12620 - 12621;
Abstract:
MAS solid-state NMR experiments applied to biological solids are still hampered by low sensitivity and resolution. In this work, we employ a deuteration scheme in which individual methyl groups are selectively protonated. This labeling scheme...
Selective editing of Val and Leu methyl groups in high molecular weight protein NMR
Linear Mode
