TABLE 2.

Dihedral angles calculated from the ³J_HNHα coupling constants

	Heterotrimer			Homotrimer
	PKG	DOG	POG	POGa	7/2b	10/3c
X		− 72 ± 6		− 73 ± 4	− 76	− 72
Y	− 63 ± 10			− 58 ± 5	− 63	− 75
G	− 80 ± 10	− 80 ± 20	− 79 ± 10	− 75 ± 6	− 70	− 67

^a Crystal structure at 1.9 Å resolution is from Nagarajan et al. (35).

^b This model is from Okuyama et al. (6).

^c This model is from Fraser et al. (36).