ST2-PT
ST2-PT (Single Transition-to-single Transition Polarization Transfer) is a method of sensitivity enhancement in NMR spectroscopy, developed by K.V. Pervushin, G. Wider, and K. Wüthrich in 1998.
This method affords a  sensitivity enhancement for kinetically stable amide 15N–1H groups in proteins.

References

Nuclear magnetic resonance
Nuclear magnetic resonance experiments