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Active-site conformational dynamics of carbonic anhydrase II under native conditions: An NMR perspective
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-15N HSQC 0.5 mM [U-13C; U-15N] hCAII, 0.5 mM [U-13C; U-15N]2H hCAII, 0.6 mM [U-100% 15N] hCAII, 0.6 mM [U-100% 13C] hCAII, 1 mM hCAII 90% H2O/10% D2O 100 mM 7.4 1 atm 298 Bruker AVANCE III 800 2 3D 1H-15N NOESY 0.5 mM [U-13C; U-15N] hCAII, 0.5 mM [U-13C; U-15N]2H hCAII, 0.6 mM [U-100% 15N] hCAII, 0.6 mM [U-100% 13C] hCAII, 1 mM hCAII 90% H2O/10% D2O 100 mM 7.4 1 atm 298 Bruker AVANCE III 800 3 3D 1H-13C NOESY aliphatic 0.5 mM [U-100% 13C; U-100% 15N] hCAII, 0.5 mM [U-99% 13C; U-99% 15N] hCAII, 0.5 mM [U-99% 15N] hCAII, 0.6 mM [U-13C; U-15N; U-2H] hCAII, 0.6 mM [U-10% 13C] hCAII 100% D2O 100 mM 7.4 1 atm 298 Bruker AVANCE III 800 4 3D 1H-13C NOESY aromatic 0.5 mM [U-100% 13C; U-100% 15N] hCAII, 0.5 mM [U-99% 13C; U-99% 15N] hCAII, 0.5 mM [U-99% 15N] hCAII, 0.6 mM [U-13C; U-15N; U-2H] hCAII, 0.6 mM [U-10% 13C] hCAII 100% D2O 100 mM 7.4 1 atm 298 Bruker AVANCE III 800 5 3D HNCA 0.5 mM [U-100% 13C; U-100% 15N] hCAII, 0.5 mM [U-99% 13C; U-99% 15N] hCAII, 0.5 mM [U-99% 15N] hCAII, 0.6 mM [U-13C; U-15N; U-2H] hCAII, 0.6 mM [U-10% 13C] hCAII 100% D2O 100 mM 7.4 1 atm 298 Bruker AVANCE III 800
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE III 800 2 Bruker AVANCE III 800
NMR Refinement Method Details Software simulated annealing CNS
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations Conformers Calculated Total Number 500 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 refinement CNS Brunger A. T. et.al. 2 structure calculation ARIA 2.3 Linge, O'Donoghue and Nilges 3 chemical shift assignment CARA Keller and Wuthrich 4 processing TopSpin Bruker Biospin 5 peak picking CcpNmr Analysis CCPN