Table 1. Data collection and refinement statistics.

Crystal name	Wild-type	Se-Met-crystal
Space group	P4132	P4132
Unit cell (Å)	a = b = c = 82.285	a = b = c = 82.370
Wavelength (Å)	1.5418	0.9795
Resolution range (Å)	50–1.75 (1.81-1.75)a	50–2.52 (2.52-2.37)a
No. of unique reflections	9,648	6,549
Redundancy	9.4(2.8)a	38.7(39.8)a
R sym (%)b	4.1(40)a	8.6(14.2)a
I/σ	46.1(2.6)a	57.8(37.8)a
Completeness (%)	95.2(78.1)a	99.9(100)a
FOM		0.763
Refinement
Resolution range (Å)	21.99∼1.75
R crystal (%)c	19.2
R free (%)d	23.2
RMSDbond (Å)	0.007
RMSDangle(°)	1.014
Number of
Protein atoms	739
Ligand atoms	20
Solvent atoms	89
Residues in (%)
most favored	75
additional allowed	4
Generously allowed	0
disallowed	0
Average B factor (Å2) of
Protein	20.48
Ligand atoms	37.40

^athe highest resolution shell.

^b .

^c R _crystal = .

^d R _free, calculated the same as R _crystal, but from a test set containing 5% of data excluded from the refinement calculation.