15N relaxation data and model-free parameters for the N-terminal receiver domain of double-mutant (D86N/A89T) unphosphorylated NtrC receiver domain (NtrCr(D86N/A89T))
MQRGIVWVVD DDSSIRWVLE RALAGAGLTC TTFENGNEVL AALASKTPDV LLSDIRMPGM DGLALLKQIK QRHPMLPVII MTAHSNLDTA VSAYQQGAFD YLPKPFDIDE AVALVERAIS HYQE