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Updated: Aug 17, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
MUSIC and aromatic residues: amino acid type-selective (1)H-(15)N correlations, III
M Schubert1, H Oschkinat, P Schmieder
1Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Str. 10, Berlin, D-13125, Germany.
Abstract:
Amino acid type-selective experiments can help to remove ambiguities in automated assignment procedures for (15)N/(13)C-labeled proteins. Here we present five triple-resonance experiments that yield amino acid type-selective (1)H-(15)N correlations for aromatic amino acids. Four of the novel experiments are based on the MUSIC coherence transfer scheme that replaces the initial INEPT transfer and is selective for CH(2). The MUSIC sequence is combined with selective excitation pulses to create experiments for Trp (W-HSQC) as well as Phe, Tyr, and His (FYH-HSQC). In addition, an experiment selective for Trp H(epsilon1)-N(epsilon1) is presented. The new experiments are recorded as two-dimensional experiments and their performance is demonstrated with the application to a protein domain of 115 amino acids.
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