Related ArticlesBringing Dynamic Molecular Machines into Focus by Methyl-TROSY NMR.
Annu Rev Biochem. 2014 Jun 2;83:291-315
Authors: Rosenzweig R, Kay LE
Abstract
Large macromolecular assemblies, so-called molecular machines, are critical to ensuring proper cellular function. Understanding how proper function is achieved at the atomic level is crucial to advancing multiple avenues of biomedical research. Biophysical studies often include X-ray diffraction and cryo-electron microscopy, providing detailed structural descriptions of these machines. However, their inherent flexibility has complicated an understanding of the relation between structure and function. Solution NMR spectroscopy is well suited to the study of such dynamic complexes, and continued developments have increased size boundaries; insights into function have been obtained for complexes with masses as large as 1 MDa. We highlight methyl-TROSY (transverse relaxation optimized spectroscopy) NMR, which enables the study of such large systems, and include examples of applications to several cellular machines. We show how this emerging technique contributes to an understanding of cellular function and the role of molecular plasticity in regulating an array of biochemical activities.
PMID: 24905784 [PubMed - as supplied by publisher]
Big Data Tackles Tiny Molecular Machines - Science 2.0
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Big Data Tackles Tiny Molecular Machines
Science 2.0
"Structural techniques like X-ray crystallography and nuclear magnetic resonance have worked quite well to help us understand how smaller proteins function," Onuchic said. X-rays only take snapshots of constantly moving proteins, he said, "but ...
Big Data Tackles Tiny Molecular Machines - Science 2.0
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03-16-2014 02:03 AM
New technique to analyze conformations of complex molecular machines - Phys.Org
http://www.bionmr.com//t2.gstatic.com/images?q=tbn:ANd9GcRo1TkQ4r1fMpUxa3wD5SK2d2V8T_oG2l78aZVQEcL_XDMCV_pyy0Biarzf0xAik6wok_0CyH8
Phys.Org
<img alt="" height="1" width="1" />
New technique to analyze conformations of complex molecular machines
Phys.Org
"Structural techniques like X-ray crystallography and nuclear magnetic resonance have worked quite well to help us understand how smaller proteins function," Onuchic said. X-rays only take snapshots of constantly moving proteins, he said, "but ...
and more »
New technique to analyze conformations of complex molecular machines...
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03-14-2014 07:34 PM
Measurement of Active Site Ionization Equilibria inthe 670 kDa Proteasome Core Particle Using Methyl-TROSY NMR
Measurement of Active Site Ionization Equilibria inthe 670 kDa Proteasome Core Particle Using Methyl-TROSY NMR
Algirdas Velyvis and Lewis E. Kay
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja403091c/aop/images/medium/ja-2013-03091c_0005.gif
Journal of the American Chemical Society
DOI: 10.1021/ja403091c
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/jacsat/~4/3QzhLO_GfOU
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05-03-2013 02:24 AM
[NMR paper] Structural Investigations of Molecular Machines by Solid-State NMR.
Structural Investigations of Molecular Machines by Solid-State NMR.
Related Articles Structural Investigations of Molecular Machines by Solid-State NMR.
Acc Chem Res. 2013 Mar 15;
Authors: Loquet A, Habenstein B, Lange A
Abstract
Essential biological processes such as cell motion, signaling,protein synthesis, and pathogen-host interactions rely on multifunctional molecular machines containing supramolecular assemblies, that is, noncovalently assembled protein subunits. Scientists would like to acquire a detailed atomic view of the complete...
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03-19-2013 01:22 PM
Methyl-TROSY NMR studies of proteasome allostery [Biophysics and Computational Biology]
Methyl-TROSY NMR studies of proteasome allostery
Ruschak, A. M., Kay, L. E....
Date: 2012-12-11
Protein degradation plays a critical role in cellular homeostasis, in regulating the cell cycle, and in the generation of peptides that are used in the immune response. The 20S proteasome core particle (CP), a barrel-like structure consisting of four heptameric protein rings stacked axially on top of each other, is... Read More
PNAS:
Number: 50
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12-12-2012 08:19 AM
3D-TROSY-based backbone and ILV-methyl resonance assignments of a 319-residue homodimer from a single protein sample
3D-TROSY-based backbone and ILV-methyl resonance assignments of a 319-residue homodimer from a single protein sample
Abstract The feasibility of practically complete backbone and ILV methyl chemical shift assignments from a single -labeled protein sample of the truncated form of ligand-free Bst-Tyrosyl tRNA Synthetase (Bst-Î?YRS), a 319-residue predominantly helical homodimer, is established. Protonation of ILV residues at methyl positions does not appreciably detract from the quality of TROSY triple resonance data. The assignments are performed at 40 °C to improve the sensitivity of...
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09-10-2012 01:48 AM
Solution NMR spectroscopy of supra-molecular systems, why bother? A methyl-TROSY view.
Solution NMR spectroscopy of supra-molecular systems, why bother? A methyl-TROSY view.
Solution NMR spectroscopy of supra-molecular systems, why bother? A methyl-TROSY view.
J Magn Reson. 2011 Mar 30;
Authors: Kay LE
With the development of appropriate labeling schemes and the associated experiments that exploit them it has become possible to record high quality solution NMR spectra of supra-molecular complexes with molecular masses extending to 1MDa. One such approach involves selective (13)CH(3) methyl labeling in highly deuterated proteins...
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04-05-2011 10:22 PM
Solution NMR Spectroscopy of Supra-Molecular Systems, Why Bother? A Methyl TROSY View
Solution NMR Spectroscopy of Supra-Molecular Systems, Why Bother? A Methyl TROSY View
Publication year: 2011
Source: Journal of Magnetic Resonance, In Press, Accepted Manuscript, Available online 8 March 2011</br>
Lewis E., Kay</br>
With the development of appropriate labeling schemes and the associated experiments that exploit them it has become possible to record high quality solution NMR spectra of supra-molecular complexes with molecular masses extending to 1MDa. One such approach involves selective 13CH3 methyl labeling in highly deuterated proteins using experiments that make...