<p>R<sub>merge</sub> = Σ|I<sub>hkl</sub>-hkl>|/ΣI<sub>hkl.</sub></p><p>R<sub>cryst</sub> = Σ|F<sub>obs</sub>-F<sub>calc</sub>|/ΣF<sub>obs.</sub></p><p>R<sub>free</sub> : R-factor using a subset of 5% of random reflections excluded from refinement.</p><p>ML ESU: Maximum likelihood estimated standard uncertainty in REFMAC <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0044811#pone.0044811-Murshudov1" target="_blank">[49]</a>.</p><p>Values in parentheses refer to the outermost resolution shell.</p
