Related ArticlesSolid-state NMR and SAXS studies provide a structural basis for the activation of alphaB-crystallin oligomers.
Nat Struct Mol Biol. 2010 Aug 29;
Authors: Jehle S, Rajagopal P, Bardiaux B, Markovic S, Kühne R, Stout JR, Higman VA, Klevit RE, van Rossum BJ, Oschkinat H
The small heat shock protein alphaB-crystallin (alphaB) contributes to cellular protection against stress. For decades, high-resolution structural studies on oligomeric alphaB have been confounded by its polydisperse nature. Here, we present a structural basis of oligomer assembly and activation of the chaperone using solid-state NMR and small-angle X-ray scattering (SAXS). The basic building block is a curved dimer, with an angle of approximately 121 degrees between the planes of the beta-sandwich formed by alpha-crystallin domains. The highly conserved IXI motif covers a substrate binding site at pH 7.5. We observe a pH-dependent modulation of the interaction of the IXI motif with beta4 and beta8, consistent with a pH-dependent regulation of the chaperone function. N-terminal region residues Ser59-Trp60-Phe61 are involved in intermolecular interaction with beta3. Intermolecular restraints from NMR and volumetric restraints from SAXS were combined to calculate a model of a 24-subunit alphaB oligomer with tetrahedral symmetry.
PMID: 20802487 [PubMed - as supplied by publisher]
Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Angew Chem Int Ed Engl. 2011 Sep 16;
Authors: Schanda P, Huber M, Boisbouvier J, Meier BH, Ernst M
PMID: 21928443
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Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Solid-State NMR Measurements of Asymmetric Dipolar Couplings Provide Insight into Protein Side-Chain Motion.
Angew Chem Int Ed Engl. 2011 Sep 14;
Authors: Schanda P, Huber M, Boisbouvier J, Meier BH, Ernst M
PMID: 21915969
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Molecular simulations and solid-state NMR investigate dynamical structure in rhodopsin activation.
Molecular simulations and solid-state NMR investigate dynamical structure in rhodopsin activation.
Molecular simulations and solid-state NMR investigate dynamical structure in rhodopsin activation.
Biochim Biophys Acta. 2011 Aug 8;
Authors: Mertz B, Struts AV, Feller SE, Brown MF
Abstract
Rhodopsin has served as the primary model for studying G protein-coupled receptors (GPCRs)-the largest group in the human genome, and consequently a primary target for pharmaceutical development. Understanding the functions and activation mechanisms of...
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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,...
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[NMR paper] Solid-state 17O NMR as a probe for structural studies of proteins in biomembranes.
Solid-state 17O NMR as a probe for structural studies of proteins in biomembranes.
Related Articles Solid-state 17O NMR as a probe for structural studies of proteins in biomembranes.
J Am Chem Soc. 2004 Dec 1;126(47):15320-1
Authors: Lemaître V, de Planque MR, Howes AP, Smith ME, Dupree R, Watts A
We report the first example of 17O NMR spectra from a selectively labeled transmembrane peptide, 17O--WALP23, as a lyophilized powder and incorporated in hydrated phospholipid vesicles. It is shown that at high magnetic field it is feasible to apply...
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[NMR paper] Structural studies of biomaterials using double-quantum solid-state NMR spectroscopy.
Structural studies of biomaterials using double-quantum solid-state NMR spectroscopy.
Related Articles Structural studies of biomaterials using double-quantum solid-state NMR spectroscopy.
Annu Rev Phys Chem. 2003;54:531-71
Authors: Drobny GP, Long JR, Karlsson T, Shaw W, Popham J, Oyler N, Bower P, Stringer J, Gregory D, Mehta M, Stayton PS
Proteins directly control the nucleation and growth of biominerals, but the details of molecular recognition at the protein-biomineral interface remain poorly understood. The elucidation of recognition...