Table 1.

Restraints used during γS structure calculation and agreement with final structures

RMSD from experimental distance restraints (Å)
HN-HN (181)	0.041 ± 0.003
CH3-CH3 (70)	0.027 ± 0.003
RMSD from χ1 (71) and χ2 (11) anglesa	0
RMSD from residual dipolar couplings (Hz)
1DNH (gelled pf1) (144)	1.22 ± 0.03
1DCαC′ (gelled pf1) (150)	0.81 ± 0.02
1DCαCβ (gelled pf1) (111)	0.63 ± 0.02
1DNC′ (gelled pf1) (134)	0.47 ± 0.03
1DNH (stretched gel) (147)	1.11 ± 0.04
1DCαC′ (stretched gel) (153)	0.66 ± 0.03
1DCαCβ (stretched gel) (135)	0.59 ± 0.02
1DNC′ (stretched gel) (139)	0.36 ± 0.02

^a Torsion angles were defined as the ideal rotameric state, selected on the basis of ³J_CγN and/or ³J_CγC′ data (χ₁) or ³JC_γCδ (χ₂), with tolerances of either ±30 ° or ±60 °.