Improved Resolution from Double Constant-Time Evolution of 3D and 4D Triple-Resonance Experiments

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Abstract:

Triple-resonance NMR experiments are nearly essential for performing backbone assignments of proteins larger than ∼15 kDa. Our work extends the double constant-time (2CT) evolution scheme to triple-resonance 3D and 4D experiments. The modifications needed to accomplish 2CT evolution in triple resonance experiments are straight forward, are completely general, and consequently, will yield increased resolution for all out-and-back experiments. We expect that the increased resolution of experiments presented here will be useful in the study of larger proteins (>30 kDa) and in the study of highly helical proteins where1HN,15N, and13C dimensions are poorly dispersed.

Keywords: NMR; constant-time; triple-resonance

Document Type: Editorial

Affiliations: The Wistar Institute, 36th and Spruce Streets, Philadelphia, Pennsylvania, 19104

Publication date: February 1, 1998

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