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Linser, R.* ; Bardiaux, B.* ; Higman, V.* ; Fink, U.* ; Reif, B.

Structure calculation from unambiguous long-range amide and methyl 1H-1H distance restraints for a microcrystalline protein with MAS solid-state NMR spectroscopy.

J. Am. Chem. Soc. 133, 5905-5912 (2011)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Magic-angle spinning (MAS) solid-state NMR becomes an increasingly important tool for the determination of structures of membrane proteins and amyloid fibrils. Extensive deuteration of the protein allows multidimensional experiments with exceptionally high sensitivity and resolution to be obtained. Here we present an experimental strategy to measure highly unambiguous spatial correlations for distances up to 13 Å. Two complementary three-dimensional experiments, or alternatively a four-dimensional experiment, yield highly unambiguous cross-peak assignments, which rely on four encoded chemical shift dimensions. Correlations to residual aliphatic protons are accessible via synchronous evolution of the (15)N and (13)C chemical shifts, which encode valuable amide-methyl distance restraints. On average, we obtain six restraints per residue. Importantly, 50% of all restraints correspond to long-range distances between residues i and j with |i - j| > 5, which are of particular importance in structure calculations. Using ARIA, we calculate a high-resolution structure for the microcrystalline 7.2 kDa α-spectrin SH3 domain with a backbone precision of ∼1.1 Å.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Angle-spinning NMR; Automated NOE assignment; Sensitivity enhancement; Perdeuterated porteins; Rotating solids; SH3 domain; C-13; 3D; Resolution; Backbone
Language english
Publication Year 2011
HGF-reported in Year 2011
ISSN (print) / ISBN 0002-7863
e-ISSN 1520-5126
Quellenangaben Volume: 133, Issue: 15, Pages: 5905-5912 Article Number: , Supplement: ,
Publisher American Chemical Society (ACS)
Reviewing status Peer reviewed
POF-Topic(s) 30203 - Molecular Targets and Therapies
Research field(s) Enabling and Novel Technologies
PSP Element(s) G-503090-001
PubMed ID 21434634
Scopus ID 79954486030
Erfassungsdatum 2011-09-20