Table 1. X-ray data collection and refinement statistics.

Numbers in parentheses are for the highest resolution shell.

Parameter	Value
Antagonist	AVPIAQKSE
Resolution (Å)	50–1.7 (1.77–1.71)
Unique reflections	31742 (2793)
Rsym*	0.115 (0.664)
I/σ(I)	21.4 (2.2)
Redundancy	12.0 (7.2)
Rcryst†	0.213
Rfree‡	0.250
Bond RMSD (Å)	0.011
Angle RMSD (°)	1.2

* R_sym=Σ|I−〈I〉|/ΣI.

† R_cryst=Σ||F_obs|−|F_calc||/Σ|F_obs|.

‡ R_free=R_cryst for a random 5% of reflections.