... concentrations on GlnK binding to TnrA GlnK TnrA interaction in the presence of mm ATP On the other hand, 2-oxoglutarate did not in uence the GlnK TnrA interaction, either alone, in the absence of divalent ... interaction of truncated TnrA proteins with GlnK and GS (A) BIAcore analysis of GlnK and GS binding to wild-type TnrA (TnrAwt), TnrA6 , TnrA2 0, and TnrA3 5 The analyte (40 nM GlnK or GS oligomers) was injected ... with the lack of TnrA degradation in this strain GS was copurified with TnrA and the recovery of GS was independent of As a next step, the interaction of TnrA with GlnK was investigated in vitro by...