Table 1.

Data collection and processing parameter

	Native PlcHR2	Se-Met PlcHR2
Beam line	X10SA	X06SA
Wavelength [Å]	1.000	0.95370
Temperature [K]	100 K	100 K
Oscillation range [°]	1	1
No. of frames	180	170
Unit cell dimensions [Å], [°]	175.5, 196.4, 325.3	157.9, 75.4, 141.0 β = 93.2
Space group	C2221	C2
max. resolution [Å]	4.0	2.75
No. observed reflections	150 089	150 083
No unique reflections	45 739	43 080
Completeness (last shell)	95.6 (92.2)	99.7 (99.3)
R sym* (last shell)	0.103 (0.352)	0.130 (0.308)
I/σ (last shell)	8.3 (2.7)	9.3 (4.7)

^*R = SUM (I-<I>)²/SUM(I²)