Related ArticlesLactose Binding Induces Opposing Dynamics Changes in Human Galectins Revealed by NMR-Based Hydrogen-Deuterium Exchange.
Molecules. 2017 Aug 16;22(8):
Authors: Chien CH, Ho MR, Lin CH, Hsu SD
Abstract
Galectins are ?-galactoside-binding proteins implicated in a myriad of biological functions. Despite their highly conserved carbohydrate binding motifs with essentially identical structures, their affinities for lactose, a common galectin inhibitor, vary significantly. Here, we aimed to examine the molecular basis of differential lactose affinities amongst galectins using solution-based techniques. Consistent dissociation constants of lactose binding were derived from nuclear magnetic resonance (NMR) spectroscopy, intrinsic tryptophan fluorescence, isothermal titration calorimetry and bio-layer interferometry for human galectin-1 (hGal1), galectin-7 (hGal7), and the N-terminal and C-terminal domains of galectin-8 (hGal8(NTD) and hGal8(CTD), respectively). Furthermore, the dissociation rates of lactose binding were extracted from NMR lineshape analyses. Structural mapping of chemical shift perturbations revealed long-range perturbations upon lactose binding for hGal1 and hGal8(NTD). We further demonstrated using the NMR-based hydrogen-deuterium exchange (HDX) that lactose binding increases the exchange rates of residues located on the opposite side of the ligand-binding pocket for hGal1 and hGal8(NTD), indicative of allostery. Additionally, lactose binding induces significant stabilisation of hGal8(CTD) across the entire domain. Our results suggested that lactose binding reduced the internal dynamics of hGal8(CTD) on a very slow timescale (minutes and slower) at the expense of reduced binding affinity due to the unfavourable loss of conformational entropy.
[NMR paper] Folding of apomyoglobin: Analysis of transient intermediate structure during refolding using quick hydrogen deuterium exchange and NMR.
Folding of apomyoglobin: Analysis of transient intermediate structure during refolding using quick hydrogen deuterium exchange and NMR.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkout.jstage.jst.go.jp-logo.gif Related Articles Folding of apomyoglobin: Analysis of transient intermediate structure during refolding using quick hydrogen deuterium exchange and NMR.
Proc Jpn Acad Ser B Phys Biol Sci. 2017;93(1):10-27
Authors: Nishimura C
Abstract
The structures of apomyoglobin folding intermediates have...
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[NMR paper] Global Dynamics and Exchange Kinetics of a Protein on the Surface of Nanoparticles Revealed by Relaxation-Based Solution NMR Spectroscopy.
Global Dynamics and Exchange Kinetics of a Protein on the Surface of Nanoparticles Revealed by Relaxation-Based Solution NMR Spectroscopy.
Global Dynamics and Exchange Kinetics of a Protein on the Surface of Nanoparticles Revealed by Relaxation-Based Solution NMR Spectroscopy.
J Am Chem Soc. 2016 Apr 25;
Authors: Ceccon A, Tugarinov V, Bax A, Clore GM
Abstract
The global motions and exchange kinetics of a model protein, ubiquitin, bound to the surface of negatively charged lipid-based nano-particles (liposomes) are derived from...
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04-26-2016 12:14 PM
[NMR paper] [Interactions between proteins and cation exchange adsorbents analyzed by NMR and hydrogen/deuterium exchange technique].
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Sheng Wu Gong Cheng Xue Bao. 2014 Sep;30(9):1454-63
Authors: Wang K, Hao D, Qi S, Ma G
Abstract
In silico acquirement of the accurate residue details of protein on chromatographic media is a bottleneck in protein chromatography separation and purification. Here we developed a novel approach by coupling with H/D exchange and nuclear magnetic resonance to observe hen egg white lysozyme (HEWL) unfolding behavior adsorbed on cation exchange media (SP Sepharose FF). Analysis of 1D 1H-NMR shows that protein unfolding accelerated...
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03-01-2015 12:18 PM
[NMR paper] NMR-Based Detection of Hydrogen/Deuterium Exchange in Liposome-Embedded Membrane Proteins.
NMR-Based Detection of Hydrogen/Deuterium Exchange in Liposome-Embedded Membrane Proteins.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.plosone.org-images-pone_120x30.png Related Articles NMR-Based Detection of Hydrogen/Deuterium Exchange in Liposome-Embedded Membrane Proteins.
PLoS One. 2014;9(11):e112374
Authors: Yao X, Dürr UH, Gattin Z, Laukat Y, Narayanan RL, Brückner AK, Meisinger C, Lange A, Becker S, Zweckstetter M
Abstract
Membrane proteins play key roles in biology. Determination of...
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11-08-2014 12:08 AM
Quantification of protein backbone hydrogen-deuterium exchange rates by solid state N
Quantification of protein backbone hydrogen-deuterium exchange rates by solid state NMR spectroscopy
Abstract We present the quantification of backbone amide hydrogen-deuterium exchange rates (HDX) for immobilized proteins. The experiments make use of the deuterium isotope effect on the amide nitrogen chemical shift, as well as on proton dilution by deuteration. We find that backbone amides in the microcrystalline α-spectrin SH3 domain exchange rather slowly with the solvent (with exchange rates negligible within the individual 15Nâ??T 1 timescales). We observed chemical exchange for 6...
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Quantification of protein backbone hydrogen-deuterium exchange rates by solid state N
Quantification of protein backbone hydrogen-deuterium exchange rates by solid state NMR spectroscopy.
Related Articles Quantification of protein backbone hydrogen-deuterium exchange rates by solid state NMR spectroscopy.
J Biomol NMR. 2010 Oct 20;
Authors: Del Amo JM, Fink U, Reif B
We present the quantification of backbone amide hydrogen-deuterium exchange rates (HDX) for immobilized proteins. The experiments make use of the deuterium isotope effect on the amide nitrogen chemical shift, as well as on proton dilution by deuteration. We find that...
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10-22-2010 06:02 AM
[NMR paper] Human recombinant [C22A] FK506-binding protein amide hydrogen exchange rates from mas
Human recombinant FK506-binding protein amide hydrogen exchange rates from mass spectrometry match and extend those from NMR.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Human recombinant FK506-binding protein amide hydrogen exchange rates from mass spectrometry match and extend those from NMR.
Protein Sci. 1997 Oct;6(10):2203-17
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[NMR paper] Mechanism of hydrogen-deuterium exchange in trp repressor studied by 1H-15N NMR.
Mechanism of hydrogen-deuterium exchange in trp repressor studied by 1H-15N NMR.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Mechanism of hydrogen-deuterium exchange in trp repressor studied by 1H-15N NMR.
J Mol Biol. 1995 Nov 3;253(4):576-89
Authors: Finucane MD, Jardetzky O
Amide proton exchange rates have been measured for fast-exchanging amides in trp aporepressor, and compared with the rates measured in the holorepressor. The results indicate that the presence...
Lactose Binding Induces Opposing Dynamics Changes in Human Galectins Revealed by NMR-Based Hydrogen-Deuterium Exchange.
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