J coupling Constants in Proteins

Self-consistent 3J coupling analysis (01JACS7081 )

Stereospecific Assignments in Side-Chains

X1 torsion angle has been also studied from 1J(CB-HB) residual dipolar couplings (01JACS6892 ) and DD(CH)-DD(CH) cross correlation

NMR Experiments: (See Tutorials)

3D HACAHB-COSY (hacahbcosygp3d | HACAHBCOSYGP3D) - 3J[HAHB] via quantitative-J
3D soft (H)CCH-E.COSY (hcchecosgp3d | HCCHECOSGP3D) - 3J[HAHB] via E.COSY

3D soft (H)C(C)CH-E.COSY (hccccosygp3d | HCCCCOSYGP3D) - 3J[CGCO] via E.COSY
3D HN(CO)C (hncocgp3d | HNCOCGP3D) - 3J[CGCO] via quantitative-J

3D soft HC(C)H-E.COSY (hcchcosygp3d | HCCHCOSYGP3D) - 3J[CACO] via E.COSY

3D HNCG - 3J[NCG] via quantitative-J
3D HNCG - 3J[NCG] via quantitative-J
2D spin-echo difference CT-HSQC - 3J[NCG] via spin-echo difference

3D HNHB - 3J[N-HA] and 3J[N-HB] via quantitative-J