Table 3. Mean Amide 15N Chemical Shifts (ppm) for Serine/Threonine Resonances Across All Peptides as a Function of Side Chain and Post-Translational Modificationa.
OH | OPO3H– | OPO32– | Δδb | |
---|---|---|---|---|
Ser | 118.2 | 116.9 | 120.8 | 2.6 |
Thr | 118.1 | 119.3 | 124.3 | 6.2 |
Full tabulated NMR data and statistical analysis are in the Supporting Information.
Δδ = δ (Ser/Thr(OPO32–)) – δ (Ser/Thr(OH)).