Table 1. Theoretical and experimental inter-spin distances.

	Experimental mean inter spin distance (nm)
Mutant	apo	GppNHp	GDP•AlFx	GDP	Cβ–Cβ distance	Calculated (MD-RLA) mean distance (nm)
S928R1COR	2.61	2.68	2.51	2.59	2.5	2.82
	(2.24)*	(2.28)*	(2.23)*	(2.19)*
T476R1Roc	3.19	3.35	3.21	3.39	2.3	2.84
+ L487A	2.75	3.24	2.40	2.74
+ Y558A	3.26	3.01	3.07	3.10
S542R1Roc	3.00	3.05	2.87	3.12	2.1	2.63
+ L487A	2.81	2.92	3.14	2.88
+ Y558A	2.77	2.76	2.65	2.66
C600R1Roc	3.74	3.73	3.46	3.37	3.5	4.42
+ L487A	3.15	3.12	2.79	3.35
+ Y558A	2.95	2.74	2.41	2.64

*Maximum of the major peak in the experimental distance distribution.