Table 4. Modified Gaussian Analysis of Orientations and Dynamics for Peptides of the GWALP23 Family^a,b.

	DLPC				DOPC
peptide	τ0	ρ0	σρ	RMSD (kHz)	τ0	ρ0	σρ	RMSD (kHz)
W5	23	304	33	0.7	9	321	48	0.7
Y5	23	295	32	0.0	6	313	34	1.0
F5	17	314	21	1.7c	9	329	40	0.6
Y4,5	14	259	>90d	1.7	6	344	72	0.9e
F4,5	18	314	0f	0.7	10	329	54	1.6
Y4	11	328	22	0.9	11	353	56	0.4
W5W18	18	35	8f	1.4	17	264	50	1.2

^aThe N-flanking aromatic residues are indicated by the abbreviation for each peptide. C-flanking W¹⁹ is also present in all samples except when the aromatic residues are W⁵ and W¹⁸.

^bAnalysis followed Strandberg et al.,¹⁶ but στ was assigned a finite value instead of 0° (see Methods). Except as noted, στ was set to 15° in DLPC or 9° in DOPC.

^cThe value of στ was 20° because no satisfactory solution was found when στ = 15°.

^dThe value of σρ remains > 90° even if στ is set to 20°.

^eThe value of στ was 13° because no satisfactory solution was found when στ = 9°.

^fThe value of σρ is perhaps artificially low because of the choice of στ. Because of the limited data set, further solutions were not explored.