1 | 0.5 mM [U-100% 13C; U-100% 15N] CD28 hinge, 20 mM sodium phosphate, 50 mM sodium chloride, 2 mM DTT, 20 uM zinc sulphate, 1 mM pefabloc, 0.1 % sodium azide, 95% H2O/5% D2O | 15N, 13C-labeled CD28 hinge in 20 mM NaPO4 at pH 6.5, 50 mM NaCl, 2 mM dithiothreitol, 20 uM ZnSO4, 1mM pefabloc, 0.1% NaN3, and 95% H2O / 5% D2O | 15N, 13C-labeled CD28 hinge | 95% H2O/5% D2Osolution2 | 0.6 mM [U-100% 13C; U-100% 15N] CD28 hinge, 20 mM sodium phosphate, 50 mM sodium chloride, 2 mM DTT, 20 uM zinc sulphate, 1 mM pefabloc, 0.1 % sodium azide, 100% D2O | 15N, 13C-labeled CD28 hinge in 20 mM NaPO4 at pH 6.5, 50 mM NaCl, 2 mM dithiothreitol, 20 uM ZnSO4, 1mM pefabloc, 0.1% NaN3, and 100% D2O | 15N, 13C-labeled CD28 hinge | 100% D2Osolution3 | 0.45 mM [U-100% 13C; U-100% 15N] CD28 hinge, 20 mM sodium phosphate, 50 mM sodium chloride, 2 mM DTT, 20 uM zinc sulphate, 1 mM pefabloc, 0.1 % sodium azide, 95% H2O/5% D2O | 15N, 13C-labeled CD28 hinge in 20 mM NaPO4 at pH 6.5, 50 mM NaCl, 2 mM dithiothreitol, 20 uM ZnSO4, 1mM pefabloc, 0.1% NaN3, and 95% H2O/ 95% D2O. 450 uM concentration. | 15N, 13C-labeled CD28 hinge | 95% H2O/5% D2Osolution4 | 0.4 mM [U-100% 15N] CD28 hinge, 20 mM sodium phosphate, 50 mM sodium chloride, 2 mM DTT, 20 uM zinc sulphate, 1 mM pefabloc, 0.1 % sodium azide, 95% H2O/5% D2O | 15N-labeled CD28 hinge in 20 mM NaPO4 at pH 6.5, 50 mM NaCl, 2 mM dithiothreitol, 20 uM ZnSO4, 1mM pefabloc, 0.1% NaN3, and 95% H2O/ 95% D2O. 400 uM concentration. | 15N-labeled CD28 hinge | 95% H2O/5% D2Osolution5 | 0.28 mM [U-100% 15N] CD28 hinge, 20 mM sodium phosphate, 50 mM sodium chloride, 2 mM DTT, 20 uM zinc sulphate, 1 mM pefabloc, 0.1 % sodium azide, 95% H2O/5% D2O | 15N-labeled CD28 hinge in 20 mM NaPO4 at pH 6.5, 50 mM NaCl, 2 mM dithiothreitol, 20 uM ZnSO4, 1mM pefabloc, 0.1% NaN3, and 95% H2O/ 95% D2O. 280 uM concentration. | 15N-labeled CD28 hinge | 95% H2O/5% D2O | | | | | | | | |