Table 1.

Experimental details

	Native	Selenomethionine derivative
Data
Space group		P6122
Cell constants, Å	a = 52.70	a = 52.85
	c = 207.61	c = 208.30
Wavelength, Å	0.97626	0.97931	0.97961	0.93928
Resolution, Å	20.0–2.15	20.0–2.40	20.0–2.40	20.0–2.20
Observations	121,253	77,229	61,733	100,170
Unique reflections	10,061	7,441	7,308	9,460
Rsym*	0.041 (0.105)	0.036 (0.095)	0.041 (0.112)	0.042 (0.125)
Ranom*		0.029 (0.064)	0.033 (0.085)	0.030 (0.117)
Completeness, %*	99.2 (97.0)	99.2 (96.3)†	94.7 (90.2)†	94.8 (68.7)†
〈I〉/〈σI〉*	36 (7.5)	13.6 (3.6)	13.1 (3.2)	9.9 (4.2)
Wilson B, Å2	25	27	27	28
FOM (solve)			0.34
FOM (resolve)			0.64
Refinement
R factor	0.220	Ramachandran outliers, %		3.6
R free (5%)	0.281	Cruickshank's DPI		0.217
No. of atoms	1,077	Average B factor, Å2		35
Protein	998	Protein		34
Waters	79	Waters		39

FOM, Figure of merit. DPI, diffraction-component precision index. 

^*Figures in parentheses represent the highest resolution shell. 

^† Friedel pairs treated as separate.