Table 2. Refinement statistics.

Resolution range, Å	15.0-1.7
Rfactor (Rfree)*	0.212 (0.243)
No. of non-hydrogen protein atoms	4,323
No. of water molecules	536
No. of FAD atoms	53
Average B-factor, Å2
Protein atoms	26.6
FAD	19.7
Water molecules	39.3
rmsd bond length,† Å	0.012
rmsd bond angle,†o	1.25
Ramachandran plot‡
Most favorable region, %	92.4
Disallowed regions, %	0.00

^*R_factor = Σ∥F_obs| -|F_calc∥/Σ|F_obs|; R_free is the R_factor value for 5% of the reflections excluded from the refinement.

^†rms deviations (rmsd) from ideal values calculated with refmac (14).

^‡Values are from procheck (17).