X-ray Data collection and refinement statistics.

a<p>The values in parentheses refer to statistics in the highest shell.</p>b<p>Rmerge = |Ii−<i>|/|Ii| where Ii is the intensity of the ith measurement, and <i>is the mean intensity for that reflection.</i></i></p><i><i>c<p>Rwork = Σh|Fo(h)−Fc(h)|/ΣhFo(h), where Fo and Fc are the observed and calculated structure factor amplitudes, respectively.</p>d<p>Rfree was calculated with 10% of the reflections in the test set.</p>e<p>Categories were defined by MolProbity.</p></i>