Histone H3 and H4 N-Terminal Tails in Nucleosome Arrays at Cellular Concentrations Probed by Magic Angle Spinning NMR Spectroscopy.
J Am Chem Soc. 2013 Oct 2;
Authors: Gao M, Nadaud PS, Bernier MW, North JA, Hammel PC, Poirier MG, Jaroniec CP
Abstract
Chromatin is a supramolecular assembly of DNA and histone proteins, organized into nucleosome repeat units. The dynamics of chromatin organization regulates DNA accessibility to eukaryotic transcription and DNA repair complexes. However, the structural and dynamic properties of chromatin at high concentrations characteristic of the cellular environment (> ~200 mg/ml) are largely unexplored at the molecular level. Here, we apply magic angle spinning nuclear magnetic resonance to directly probe the dynamic histone protein regions in 13C,15N-enriched recombinant nucleosome arrays at cellular chromatin concentrations and conditions designed to emulate distinct states of DNA condensation, with focus on the flexible H3 and H4 N-terminal tails which mediate chromatin compaction. 2D 1H-13C and 1H-15N spectra reveal numerous correlations for H3 and H4 backbone and side-chain atoms, enabling identification of specific residues making up the dynamically disordered N-terminal tail domains. Remarkably, we find that both the H3 and H4 N-terminal tails are overall dynamic even in a highly condensed state. This significant conformational flexibility of the histone tails suggests that they remain available for protein binding in compact chromatin states to enable regulation of heterochromatin. Furthermore, our study provides a foundation for quantitative structural and dynamic investigations of chromatin at physiological concentrations.
PMID: 24088044 [PubMed - as supplied by publisher]
[NMR paper] The assessment of the quality of the graft in an animal model for lung transplantation using the metabolomics 1H high-resolution magic angle spinning NMR spectroscopy.
The assessment of the quality of the graft in an animal model for lung transplantation using the metabolomics 1H high-resolution magic angle spinning NMR spectroscopy.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--media.wiley.com-assets-2250-98-WileyOnlineLibrary-Button_120x27px_FullText.gif Related Articles The assessment of the quality of the graft in an animal model for lung transplantation using the metabolomics 1H high-resolution magic angle spinning NMR spectroscopy.
Magn Reson Med. 2012 Oct;68(4):1026-38
Authors: Benahmed MA,...
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[NMR paper] Probing Structure and Dynamics of Protein Assemblies by Magic Angle Spinning NMR Spectroscopy.
Probing Structure and Dynamics of Protein Assemblies by Magic Angle Spinning NMR Spectroscopy.
Probing Structure and Dynamics of Protein Assemblies by Magic Angle Spinning NMR Spectroscopy.
Acc Chem Res. 2013 Feb 13;
Authors: Yan S, Suiter CL, Hou G, Zhang H, Polenova T
Abstract
In living organisms, biological molecules often organize into multicomponent complexes. Such assemblies consist of various proteins and carry out essential functions, ranging from cell division, transport, and energy transduction to catalysis, signaling, and viral...
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02-14-2013 02:37 PM
[NMR paper] Magic angle spinning nuclear magnetic resonance spectroscopy of g protein-coupled receptors.
Magic angle spinning nuclear magnetic resonance spectroscopy of g protein-coupled receptors.
Related Articles Magic angle spinning nuclear magnetic resonance spectroscopy of g protein-coupled receptors.
Methods Enzymol. 2013;522:365-89
Authors: Goncalves J, Eilers M, South K, Opefi CA, Laissue P, Reeves PJ, Smith SO
Abstract
G protein-coupled receptors (GPCRs) represent the largest family of membrane receptors and mediate a diversity of cellular processes. These receptors have a common seven-transmembrane helix structure, yet have evolved...
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02-05-2013 09:51 PM
Probing ground and excited states of phospholamban in model and native lipid membranes by magic angle spinning NMR spectroscopy.
Probing ground and excited states of phospholamban in model and native lipid membranes by magic angle spinning NMR spectroscopy.
Probing ground and excited states of phospholamban in model and native lipid membranes by magic angle spinning NMR spectroscopy.
Biochim Biophys Acta. 2011 Aug 3;
Authors: Gustavsson M, Traaseth NJ, Veglia G
In this paper, we analyzed the ground and excited states of phospholamban (PLN), a membrane protein that regulates sarcoplasmic reticulum calcium ATPase (SERCA), in different membrane mimetic environments....
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08-16-2011 01:19 PM
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
Solid-state photo-CIDNP effect observed in phototropin LOV1-C57S by (13)C magic-angle spinning NMR spectroscopy.
J Am Chem Soc. 2010 Nov 10;132(44):15542-3
Authors: Thamarath SS, Heberle J, Hore PJ, Kottke T, Matysik J
Until now, the solid-state photo-CIDNP effect, discovered in 1994 by Zysmilich and McDermott, has been observed selectively in photosynthetic systems. Here we present the first observation of this effect in a...
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03-02-2011 11:54 AM
[NMR paper] Resonance assignments and secondary structure analysis of E. coli thioredoxin by magic angle spinning solid-state NMR spectroscopy.
Resonance assignments and secondary structure analysis of E. coli thioredoxin by magic angle spinning solid-state NMR spectroscopy.
Related Articles Resonance assignments and secondary structure analysis of E. coli thioredoxin by magic angle spinning solid-state NMR spectroscopy.
J Phys Chem B. 2005 Sep 29;109(38):18135-45
Authors: Marulanda D, Tasayco ML, Cataldi M, Arriaran V, Polenova T
De novo site-specific 13C and 15N backbone and sidechain resonance assignments are presented for uniformly enriched E. coli thioredoxin, established using...
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[NMR paper] Determination of membrane protein structure and dynamics by magic-angle-spinning solid-state NMR spectroscopy.
Determination of membrane protein structure and dynamics by magic-angle-spinning solid-state NMR spectroscopy.
Related Articles Determination of membrane protein structure and dynamics by magic-angle-spinning solid-state NMR spectroscopy.
J Am Chem Soc. 2005 Sep 21;127(37):12965-74
Authors: Andronesi OC, Becker S, Seidel K, Heise H, Young HS, Baldus M
It is shown that molecular structure and dynamics of a uniformly labeled membrane protein can be studied under magic-angle-spinning conditions. For this purpose, dipolar recoupling experiments...
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[NMR paper] Magic angle spinning solid-state NMR spectroscopy for structural studies of protein i
Magic angle spinning solid-state NMR spectroscopy for structural studies of protein interfaces. resonance assignments of differentially enriched Escherichia coli thioredoxin reassembled by fragment complementation.
Related Articles Magic angle spinning solid-state NMR spectroscopy for structural studies of protein interfaces. resonance assignments of differentially enriched Escherichia coli thioredoxin reassembled by fragment complementation.
J Am Chem Soc. 2004 Dec 22;126(50):16608-20
Authors: Marulanda D, Tasayco ML, McDermott A, Cataldi M, Arriaran V,...