Table 1.

Summary of the Total Number and Assigned Cross-Peaks in the Investigated Spectra, and Upper Distance Limits Used for Distance Restraints from Each Spectral Type^a

type of spectra analyzed	total number of observed cross-peaks	unambiguous restraints		upper distance limit used
		from assignment	from structure
PDSD	909	80	181	9.0
DARR	824	86	138	9.0
CHHC (1)	692	64	132	6.5
CHHC (2)	574	37	55	6.5
PAR (1)	1016	83	232	7.0
PAR (2)	747	61	100	7.0
PAR (3)	667	50	129	7.0
PAIN-CP	563	55	43	6.5

^aThe different CHHC spectra were acquired with 300 μs (1) and 150 μs (2) of mixing times, and the different aliphatic ¹³C–¹³C PAR spectra were acquired with 20 ms (1) and 15 ms of mixing times at 850 MHz (2) and 900 MHz (3) of ¹H Larmor frequency.