
Determination of the 2hJHP scalar coupling constants across the HB1 hydrogen bond in quantitative H,P-experiments for the U14ψ variant (A), the U13ψ variant (B), the U18ψ variant (C) and the U13ψ_U18ψ variant (D) of the WT NSR. For comparison, the corresponding curve for the unmodified WT NSR is given in gray in each panel.










