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. 2015 Jun 27;71(Pt 7):889–894. doi: 10.1107/S2053230X15008882

Table 4. Data collection and processing.

Values in parentheses are for the highest resolution shell.

Diffraction source BL17U, SSRF
Wavelength () 0.97907
Temperature (K) 100
Detector ADSC Q315R
Crystal-to-detector distance (mm) 250
Rotation range per image () 0.2
Total rotation range () 180
Exposure time per image (s) 1
Space group P21212
Unit-cell parameters (, ) a = 96.2, b = 135.8, c = 69.5, = = = 90
Mosaicity () 0.7
Resolution range () 48.571.90 (2.001.90)
Total No. of reflections 354138
No. of unique reflections 71707
Completeness (%) 98.7 (100.0)
Multiplicity 4.9 (5.0)
I/(I) 5.8 (2.1)
R meas (%) 9.8 (46.4)
Overall B factor from Wilson plot (2) 20.7

R meas is the redundancy-independent merging R factor. Here, R meas is estimated by multiplying the conventional R merge value by the factor [N/(N 1)]1/2, where N is the data multiplicity (Diederichs Karplus, 1997).