Table 3.

Structural differences between T, R and R2 states of COHb A and COHb S. The least-squares calculations involved only Cα atoms.

Transition				Rmsd(Å)				Screw- rotation angle(°)
	α1	α2	β1	β2	α1β1	α2β2	α1β1α2β2
COHb S(R)-COHb A(R)	0.17	0.17	0.19	0.19	0.21	0.21	0.24	0.9
COHb S(R)-COHb S(R2)	0.69	0.69	0.45	0.43	0.61	0.61	1.61	11.2
COHb A(R)-COHb S(R2)	0.63	0.64	0.42	0.42	0.55	0.56	1.64	12.1
COHb S(R)-DxHb S(T)	0.48	0.48	0.75	0.89	0.81	0.75	2.37	14.2
COHb A(R)-DxHb S(T)	0.48	0.49	0.79	0.91	0.91	0.81	2.37	13.9
COHb S(R2)-DxHb S(T)	0.70	0.72	0.82	1.01	1.02	1.01	2.59	21.6