Table 1.

Crystallographic data

	HdeB (methylated)	Se-Met HdeB (methylated)
Source	Diamond IO2	Diamond IO2
Wavelength (Å)	0.9796	0.9775
Space group	C2	C2
Unit cell dimensions
a (Å)	100.9	100.2
b (Å)	86.5	86.1
c (Å)	48.5	48.3
α (°)	90	90
β (°)	112.5	112.6
γ (°)	90	90
Wilson B-factor (Å2)	19
Resolution (Å)	33–1.5 (1.54–1.5)	46–2.2 (2.22–2.20)
Unique reflections	58,562 (4060)	19,209 (544)
Mosaicity (°)	0.24	0.68
Anomalous correlation	—	0.72 (0.66)
Completeness (%)	95.3 (94.5)	99.8 (100)
Multiplicity	3.8 (3.8)	5.4 (5.5)
Mean I/σ	24 (2.7)	19 (9.7)
R merge (%)	3.8 (21.1)	5.6 (11.0)
Refinement
R-factor/Rfree (%)	18.1/19.5 (19.3/22.8)
RMSD bonds  (Å)/angles (°)	0.01/1.35
MolProbity  score/centile	1.31/95
Number of atoms	2707
PDB code	2xuv

Se-Met, selenomethionine.