Gradient-tailored excitation for single-quantum NMR spectroscopy of aqueous solutions
- Cite this article as:
- Piotto, M., Saudek, V. & Sklenář, V. J Biomol NMR (1992) 2: 661. doi:10.1007/BF02192855
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A novel approach to tailored selective excitation for the measurement of NMR spectra in non-deuterated aqueous solutions (WATERGATE, WATER suppression by GraAdient-Tailored Excitation) is described. The gradient echo sequence, which effectively combines one selective 180° radiofrequency pulse and two field gradient pulses, achieves highly selective and effective water suppression. This technique is ideally suited for the rapid collection of multi-dimensional data since a single-scan acquisition produces a pure phase NMR spectrum with a perfectly flat baseline, at the highest possible sensitivity. Application to the fast measurement of 2D NOE data of a 2.2. mM solution of a double-stranded DNA fragment in 90% H2O at 5 °C is presented.