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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)
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
Publisher
American Chemical Society (ACS)
Reviewing status
Peer reviewed
Institute(s)
Institute of Structural Biology (STB)
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