(b).

Refinement statistics on peak data.

Non-H atoms	888
Water molecules	8
R.m.s.d. bond lengths ()	0.010
R.m.s.d. bond angles ()	1.1
R.m.s.d. peptide planarity ()	4.2
Ramachandran plot favoured (%)	98.1
Ramachandran plot accepted (%)	2
Ramachandran plot outliers (%)	0
Mean B value (2)	29.9
R.m.s.d. B, main chain (2)	2.0
R.m.s.d. B, side chain (2)	5.1
R	0.23
R free	0.30
PDB code	3fyr

^†Friedel pairs have been treated as individual reflections for the purposes of scaling, but were combined for the purposes of refinement.

^‡ R _merge = .