| Literature DB >> 11727979 |
K Pervushin1, V Gallius, C Ritter.
Abstract
A general method for improving of the sensitivity of the TROSY-type triple resonance experiments in the presence of conformational exchange-induced (CSX) relaxation is proposed based on the use of CPMG-INEPT (Müller et al., J. Am. Chem. Soc., 1995, 117, 11043-11048) during the N-C polarization transfer periods. Significantly improved sensitivity is demonstrated for the majority of cross-peaks in the new [15N,1H]-TROSY-XY-HNCA experiment, measured with partially folded RNase AS-Protein, with negligible loss of sensitivity for resonances unaffected by CSX relaxation. In addition, a comparison of cross-peak amplitudes in [15N,1N]-TROSY-XY-HNCA and conventional [15N,1H]-TROSY-HNCA spectra provides a quick and sensitive estimation of the CSX relaxation contribution.Entities:
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Year: 2001 PMID: 11727979 DOI: 10.1023/a:1012484027195
Source DB: PubMed Journal: J Biomol NMR ISSN: 0925-2738 Impact factor: 2.835