Table 1. Data-collection statistics for S. mutans PNP.

Values in parentheses are for the highest resolution shell.

Resolution (Å)	18.8–2.0 (2.1–2.0)
Completeness (%)	90.2 (100.0)
Rmerge† (%)	4.0 (8.1)
Mean I/σ(I)	29.6 (16.8)
Space group	H3
Unit-cell parameters (Å)	a = b = 113.0, c = 60.1
No. of observed reflections	87487 (13240)
No. of unique reflections	17443 (2603)
Molecules per ASU	1
VM‡ (Å3 Da−1)	2.6
Solvent content (%)	53

^† R _merge = , where I _i(hkl) is the ith observation of reflection hkl and 〈I(hkl)〉 is the mean intensity of all observations of reflection hkl.

^‡Matthews (1968 ▶).