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First Ca2+ binding domain of the Na,Ca-exchanger (NCX1)
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 3D_13C separated aliphatic NOESY 0.5-1.0mM 13C, 15N CBD1 sample (residues 371-509) in 20mM HEPES buffer (pH 7.0), 20mM beta-Mercaptoethanol 95% ddH2O, 5% D2O 20mM HEPES (sodium salt) 7.0 ambient 306 2 3D_13C separated aromatic NOESY 0.5-1.0mM 13C, 15N CBD1 sample (residues 371-509) in 20mM HEPES buffer (pH 7.0), 20mM beta-Mercaptoethanol 95% ddH2O, 5% D2O 20mM HEPES (sodium salt) 7.0 ambient 306 3 3D_15N-separated_NOESY 0.5-1.0mM 13C, 15N CBD1 sample (residues 371-509) in 20mM HEPES buffer (pH 7.0), 20mM beta-Mercaptoethanol 95% ddH2O, 5% D2O 20mM HEPES (sodium salt) 7.0 ambient 306
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 800 2 Varian INOVA 600
NMR Refinement Method Details Software torsion angle dynamics The structures are based on 2313 NOE-derived distance constraints, 175 dihedral angle restraints (talos), 9 distance constraints to the 2 Ca2+ ions NMRPipe
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 100 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 processing NMRPipe 2.1 Delaglio, F. 2 data analysis XEASY 1.3.13 Bartels, C. 3 structure solution CYANA 2.0 Guentert, P. 4 refinement X-PLOR NIH version 2.9.7 Clore, G.M.