Data collection and refinement statistics for GkaP wild type and mutant.

a Values in parentheses correspond to the highest resolution shell.bRmerge = ΣhklΣi|I(hkl)i-I(hkl)>|/ΣhklΣiI(hkl)i, where I(hkl)> is the mean intensity of the observations I(hkl)i of reflection hkl.cRwork = Σ||Fobs||Fcalc||/Σ|Fobs|, where Fobs and Fcalc are the observed and calculated structure-factor amplitudes, respectively. Rfree was calculated as Rwork using a randomly selected subset of ∼10% of unique reflections not used for structure refinement.Data collection and refinement statistics for GkaP wild type and mutant.