Table 2.

Refinement statistics

Resolution	56.8 3 2.0 Å
Space group	P6522
Unit cell dimensions	a = b = 65.8 Å , c = 292.0 Å
Reflections: total (unique)	24,420 (1,305)
Protein atomsa	1917
Solvent atomsb	109
Rwork (%)c	20.6
Rfree (%)c	23.6
Ramachandran analysis (%)
Most favored	97.2
Additionally allowed	2.8
Generously allowed	0
Disallowed	0
rms deviation
Bond lengths (Å)	0.022
Bond angle (deg)	1.633

^a These include multiple conformations for Arg-184.

^b These include water molecules, 1 Mn atom, and 1 ethylene glycol.

^cR-factor=(∑|F_o − F_c|/∑|F_o|) × 100 where F_o is the observed structure-factor amplitude and F_c is the calculated structure-factor amplitude.