NDLI: The 3D NOESY-[1H,15N,1H]-ZQ-TROSY NMR experiment with diagonal peak suppression

Content Provider	PubMed Central
Author	Pervushin, Konstantin V. Wider, Gerhard Riek, Roland Wüthrich, Kurt
Copyright Year	1999
Abstract	In our 3D NOESY-[1H,15N,1H]-ZQ-TROSY experiment, the TROSY principle (transverse relaxation-optimized spectroscopy) is used in three-dimensional (3D) 15N-resolved nuclear Overhauser enhancement spectroscopy (NOESY), which enables resonance assignments by sequential nuclear Overhauser effects and the collection of structural constraints in large 15N- or 2H,15N-labeled proteins. Our experiment affords optimization of the transverse relaxation in all three frequency dimensions, provides suppression of the strong diagonal autorelaxation peaks, which otherwise tend to interfere with the analysis of nearby informative crosspeaks, and yields improved resolution for the entire spectrum when compared with conventional 3D 15N-resolved-[1H,1H]-NOESY, because of the narrower lineshapes along both proton dimensions. The key element of this experiment is an approach for correlating the 15N and 1H chemical shifts with two-dimensional ZQ-[15N,1H]-TROSY, where zero-quantum (ZQ) coherence is generated and the remote cross-correlation between the 1H and 15N chemical shift anisotropy interactions is used to reduce transverse relaxation during 15N evolution. Practical applications are illustrated with spectra of a protein with a molecular mass of 110,000 Da.
Starting Page	9607
File Format	PDF
ISSN	10916490
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	17
Volume Number	96
Language	English
Publisher	The National Academy of Sciences
Publisher Date	1999-08-17
Access Restriction	Open
Rights Holder	The National Academy of Sciences
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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