Table II.

Comparisons for six β2AR theoretical models versus two crystal structures in terms of TM helical boundaries and RMSD. The bordering residues for each TM region are identified by MOE and annotated using a specialized numbering rule. The RMSDs for each model’s TM were calculated using the true length of the corresponding segments of 2RH1 and 1U19 (in italic).

Segment	2RH1	AM1		AM2		AM3		CM1		CM2		CM3
	1U19	start/end	RMSD	start/end	RMSD	start/end	RMSD	start/end	RMSD	start/end	RMSD	start/end	RMSD
TMI	1.30/1.59	1.29/1.60	2.77Ǻ	1.29/1.59	3.02Ǻ	1.28/1.59	3.01Ǻ	1.31/1.59	3.18Ǻ	1.32/1.58	3.19Ǻ	1.35/1.56	5.12Ǻ
	1.29/1.59		0.30Ǻ		0.30Ǻ		0.83Ǻ		2.93Ǻ		3.03Ǻ		6.90Ǻ
TMII	2.38/2.67	2.38/2.67	1.76Ǻ	2.38/2.67	1.59Ǻ	2.38/2.67	1.90Ǻ	2.37/2.65	3.19Ǻ	2.37/2.65	3.09Ǻ	2.45/2.64	4.38Ǻ
	2.38/2.67		0.32Ǻ		0.37Ǻ		0.68Ǻ		2.40Ǻ		2.36Ǻ		4.31Ǻ
TMIII	3.21/3.55	3.22/3.55	4.32Ǻ	3.22/3.54	2.09Ǻ	3.23/3.54	1.67Ǻ	3.22/3.55	2.57Ǻ	3.23/3.55	2.56Ǻ	3.27/3.47	6.99Ǻ
	3.21/3.54		0.34Ǻ		0.37Ǻ		1.08Ǻ		2.21Ǻ		2.25Ǻ		5.00Ǻ
TMIV	4.39/4.62	N/A	1.95Ǻ	4.39/4.61	1.94Ǻ	4.39/4.62	1.67Ǻ	4.40/4.57	5.21Ǻ	4.41/4.57	5.43Ǻ	4.38/4.68	3.47Ǻ
	4.39/4.62		0.32Ǻ		0.49Ǻ		1.06Ǻ		5.00Ǻ		5.02Ǻ		4.60Ǻ
TMV	5.36/5.68	5.34/5.62	2.37Ǻ	5.35/5.62	3.48Ǻ	5.35/5.70	2.76Ǻ	5.41/5.67	2.17Ǻ	5.41/5.67	2.13Ǻ	5.37/5.58	6.85Ǻ
	5.31/5.62		0.43Ǻ		0.38Ǻ		1.00Ǻ		2.04Ǻ		2.06Ǻ		3.59Ǻ
TMVI	6.29/6.60	6.33/6.60	1.67Ǻ	6.33/6.59	3.80Ǻ	6.27/6.60	1.96Ǻ	6.28/6.59	4.24Ǻ	6.28/6.59	4.21Ǻ	6.38/6.59	8.12Ǻ
	6.25/6.59		0.32Ǻ		9.11Ǻ		0.80Ǻ		3.63Ǻ		3.69Ǻ		12.54Ǻ
TMVII	7.32/7.55	7.38/7.56	3.82Ǻ	7.32/7.51	1.65Ǻ	7.33/7.55	2.35Ǻ	7.32/7.55	4.08Ǻ	7.32/7.55	4.20Ǻ	7.34/7.55	3.93Ǻ
	7.32/7.55		0.38Ǻ		1.01Ǻ		1.37Ǻ		3.34Ǻ		3.42Ǻ		2.64Ǻ
TMI-VII			2.47Ǻ		3.19Ǻ		2.25Ǻ		3.59Ǻ		N/A		4.41Ǻ
			1.15Ǻ		1.88Ǻ		1.38Ǻ		3.20Ǻ		N/A		3.83Ǻ
ECLII			N/A		13.43Ǻ		13.19Ǻ		7.00Ǻ		7.18Ǻ		19.00Ǻ
			N/A		1.32Ǻ		1.81Ǻ		13.72Ǻ		13.96Ǻ		19.70Ǻ
Binding pocket			3.71Ǻ		3.39Ǻ		3.58Ǻ		2.33Ǻ		2.40Ǻ		5.64Ǻ