Hyperpolarized water can selectively enhance NMR signals of rapidly exchanging protons in osteopontin (OPN), a metastasis-associated intrinsically disordered protein (IDP), at near-physiological pH and temperature. The transfer of magnetization from hyperpolarized water is limited to solvent-exposed residues and therefore selectively enhances signals in 1H-15N correlation spectra. Binding to the polysaccharide heparin was found to induce the unfolding of preformed structural elements in OPN.A fair exchange: The study of intrinsically disordered proteins under physiological conditions is often impeded by weak and overlapping NMR signals. This bottle-neck can be overcome by means of dissolution dynamic nuclear polarization (D-DNP). Selective proton exchange between hyperpolarized water with solvent-exposed amino acids in osteopontin, a metastasis-associated protein, casts light on the binding of this IDP to heparin.
[NMR paper] Recombinant Intrinsically Disordered Proteins for NMR: Tips and Tricks.
Recombinant Intrinsically Disordered Proteins for NMR: Tips and Tricks.
Related Articles Recombinant Intrinsically Disordered Proteins for NMR: Tips and Tricks.
Adv Exp Med Biol. 2015;870:187-213
Authors: Calçada EO, Korsak M, Kozyreva T
Abstract
The growing recognition of the several roles that intrinsically disordered proteins play in biology places an increasing importance on protein sample availability to allow the characterization of their structural and dynamic properties. The sample preparation is therefore the limiting...
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09-21-2015 03:01 PM
[NMR paper] An Approach to NMR Assignment of Intrinsically Disordered Proteins.
An Approach to NMR Assignment of Intrinsically Disordered Proteins.
An Approach to NMR Assignment of Intrinsically Disordered Proteins.
Chemphyschem. 2015 Jan 30;
Authors: Goradia N, Wiedemann C, Herbst C, Görlach M, Heinemann SH, Ohlenschläger O, Ramachandran R
Abstract
An efficient approach to NMR assignments in intrinsically disordered proteins is presented, making use of the good dispersion of cross peaks observed in - and -correlation spectra. The method involves the simultaneous collection of {3D (H)NCO(CAN)H and 3D...
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[NMR paper] Toward optimal-resolution NMR of intrinsically disordered proteins.
Toward optimal-resolution NMR of intrinsically disordered proteins.
Related Articles Toward optimal-resolution NMR of intrinsically disordered proteins.
J Magn Reson. 2014 Apr;241:41-52
Authors: Nová?ek J, Zídek L, Sklená? V
Abstract
Proteins, which, in their native conditions, sample a multitude of distinct conformational states characterized by high spatiotemporal heterogeneity, most often termed as intrinsically disordered proteins (IDPs), have become a target of broad interest over the past 15years. With the growing evidence of their...
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03-25-2014 11:49 AM
Toward optimal-resolution NMR of intrinsically disordered proteins
Toward optimal-resolution NMR of intrinsically disordered proteins
Publication date: April 2014
Source:Journal of Magnetic Resonance, Volume 241</br>
Author(s): Ji?í Nová?ek , Lukáš Žídek , Vladimír Sklená?</br>
Proteins, which, in their native conditions, sample a multitude of distinct conformational states characterized by high spatiotemporal heterogeneity, most often termed as intrinsically disordered proteins (IDPs), have become a target of broad interest over the past 15years. With the growing evidence of their important roles in fundamental cellular...
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03-21-2014 12:52 AM
[NMR paper] NMR based solvent exchange experiments to understand the conformational preference of intrinsically disordered proteins using FG-nucleoporin peptide as a model.
NMR based solvent exchange experiments to understand the conformational preference of intrinsically disordered proteins using FG-nucleoporin peptide as a model.
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 NMR based solvent exchange experiments to understand the conformational preference of intrinsically disordered proteins using FG-nucleoporin peptide as a model.
Biopolymers. 2013 Sep 4;
Authors: Heisel KA, Krishnan VV
...
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09-17-2013 11:36 PM
[NMR paper] Fast hydrogen exchange affects (15)N relaxation measurements in intrinsically disordered proteins.
Fast hydrogen exchange affects (15)N relaxation measurements in intrinsically disordered proteins.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--production.springer.de-OnlineResources-Logos-springerlink.gif Related Articles Fast hydrogen exchange affects (15)N relaxation measurements in intrinsically disordered proteins.
J Biomol NMR. 2013 Jan 12;
Authors: Kim S, Wu KP, Baum J
Abstract
Unprotected amide protons can undergo fast hydrogen exchange (HX) with protons from the solvent. Generally, NMR experiments using the out-and-back...
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Intrinsically disordered proteins - PhysicsToday.org
Intrinsically disordered proteins - PhysicsToday.org
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Intrinsically disordered proteins
PhysicsToday.org
Indeed, much of the community's understanding of protein function rests on our ability to deduce those structures by such methods as x-ray crystallography and nuclear magnetic resonance (NMR). The immense success and explanatory power of the ...
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Investigation of Intrinsically Disordered Proteins through Exchange with Hyperpolarized Water
Linear Mode
