All measurements were performed in 90% H₂O/10% D₂O at 25 °C. The experimental uncertainty was estimated to ±2% based on triplicate measurements.

^a The fitted data to this measurement were not available due to overlap with signals arising from acetic acid

Table 1: R_h of mHIV-1-PR_1-95 measured in different denaturants by PFG-NMR.