Table 1.
Measurements | pH 5.6 (citrate)
|
pH 7.5 Hepes
|
|
---|---|---|---|
No metal bound | No metal bound | Mn2+ bound | |
Unit cell dimensions (a, c) Å | 66.71, 81.02 | 66.44, 81.28 | 66.44, 81.07 |
Highest resolution of x-ray data, Å | 2.0 | 1.9 | 1.9 |
Total number of reflections | 93168 | 115637 | 92081 |
Unique reflections, n | 12682 | 14942 | 14653 |
Completeness, % | 99.0 | 99.9 | 98.2 |
Rsym*, % | 7.2 | 5.8 | 6.6 |
Rcryst†, % | 15.1 | 15.5 | 15.2 |
Rfree†, % | 22.2 | 21.2 | 21.0 |
Rms deviation from ideal geometry | |||
Bond lengths, Å | 0.011 | 0.012 | 0.012 |
Bond angles, ° | 1.42 | 1.67 | 1.62 |
Improper angles, ° | 1.98 | 1.99 | 1.83 |
Dihedral angles, ° | 23.31 | 23.37 | 23.30 |
Average B-factor, Å2 | |||
All nonhydrogen atoms | 30.85 | 30.26 | 29.65 |
Inhibitor atoms | 31.33 | 42.17 | 31.54 |
Nonhydrogen atoms, n | |||
All atoms | 1279 | 1316 | 1320 |
Water molecules | 126 | 169 | 172 |
Rsym(I) = ΣΣ/I(I)−〈I(hkl)〉//Σ(I), summed over all reflections and observations, where I(I) is the ith observation of the hkl reflection intensity and 〈I(hkl)〉 is the mean hkl reflection intensity.
Rcryst(F) = Σh//Fobs(h)/−/Fcalc(h)///Σh/Fobs(h)/, where Fobs and Fcalc are the observed and calculated structure-factor amplitudes for the reflection with Miller indices h = (h, k, l). The free R-factor (Rfree) is calculated for a random set of reflections (10%) excluded from the refinement.