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. Author manuscript; available in PMC: 2015 Jun 1.

Published in final edited form as: Mol Microbiol. 2014 Apr 24;92(5):973–984. doi: 10.1111/mmi.12605

Table 1.

Data collection and refinement statistics.

	wild-type c₁₃ ring at pH 9.0	P51A mutant c₁₃ ring at pH 4.4

Data collection	1 crystal	1 crystal
Space group	P2₁	P2₁
Cell dimensions
a, b, c (Å)	73.8, 96.75, 118.33	73.94, 98.33, 121.93
α, β, γ (°)	90, 105.4, 90	90, 104.28, 90
Resolution (Å)	40 – 2.42 (2.5 – 2.42)^*	48.33 – 2.8 (2.9 – 2.8)^*
R _meas	0.08 (0.89)	0.125 (1.6)
R _mergd-F	0.17 (0.96)	0.178(1.05)
I / σI	12.3 (1.8)	10.3 (1.8)
Completeness (%)	99.3 (90.0)	99.0 (98.6)
Redundancy	4.5 (3.6)	9.1(8.65)
Refinement
Resolution (Å)	20 – 2.42	48.0 – 2.8
No. reflections	60880	41447
R_work / R_free (%)	19.49 / 22.83	23.51 / 28.78
No. Atoms	6745	6732
Protein	6327	6345
Ligand/ion	344	367
Water	74	20
B-factors	52.1	53.9
Protein	50.2	52.1
Water	50.6	43.7
R.m.s. deviations
Bond lengths (Å)	0.004	0.002
Bond angles (°)	0.793	0.573

^*

Values in parentheses are for highest-resolution shell.