1 | 0.5 mM [U-15N; U-2H; 13C(1H)3 ALA-b, ILE-d1, LEU-d2, MET-e, THR-g, VAL-g2] HSP90 alpha NTD, 150 mM Na+, 150 mM Cl-, 1 mM TCEP, 20 mM [U-2H] HEPES, 100% D2O | Perdeuterated and Specifically 13C(1H)3 sample labelled ALA-b, ILE-d1, LEU-d2, MET-e, THR-g, VAL-g2 methyl groups | [U-15N; U-2H; 13C(1H)3 ALA-b, ILE-d1, LEU-d2, MET-e, THR-g, VAL-g2] | 100% D2Osolution2 | 0.5 mM [U-2; U-15N; LEU U-13C, U-2H, 13C(1H)3d2, 12C(2H)3d1; VAL U-13C, U-2H, 13C(1H)3g2, 12C(2H)3g1; ILE U-13C, U-2H, 13C(1H)3d1, 12C(2H)3g2] HSP90 alpha NTD, 150 mM Na+, 150 mM Cl-, 1 mM TCEP, 20 mM [U-2H] HEPES, 100% D2O | Perdeuterated and Specifically 13C(1H)3 sample labelled ILE-d1, LEU-d2, VAL-g2 methyl groups | [U-2; U-15N; LEU U-13C, U-2H, 13C(1H)3d2, 12C(2H)3d1; VAL U-13C, U-2H, 13C(1H)3g2, 12C(2H)3g1; ILE U-13C, U-2H, 13C(1H)3d1, 12C(2H)3g2] | 100% D2Osolution3 | 0.5 mM [U-15N; THR U-13C; ALA U-13C] HSP90 alpha NTD, 150 mM Na+, 150 mM Cl-, 1 mM TCEP, 20 mM HEPES, 100% D2O | Perdeuterated and Specifically 13C(1H)3 sample labelled ALA, THR methyl groups[U-15N; THR U-13C; ALA U-13C] | 100% D2O | | | | | |