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Solution Structure of the Nudix Enzyme Diadenosine Tetraphosphate Hydrolase from Lupinus angustifolius Complexed with ATP
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 HNHA 1.6 mM U-15N, U-13C Ap4A hydrolase
1.6 mM ATP
20 mM U-100% 2H imidazole
32 mM NaF
20 mM MgCl2 90% H2O/10% D2O 120 mM 6.5 ambient 298 2 3D_15N-separated_NOESY 1.6 mM U-15N, U-13C Ap4A hydrolase
1.6 mM ATP
20 mM U-100% 2H imidazole
32 mM NaF
20 mM MgCl2 90% H2O/10% D2O 120 mM 6.5 ambient 298 3 3D_13C-separated_NOESY 1.6 mM U-15N, U-13C Ap4A hydrolase
1.6 mM ATP
20 mM U-100% 2H imidazole
32 mM NaF
20 mM MgCl2 100% D2O 120 mM 6.5 ambient 298 4 2D_doubly-tuned_13C_15N-filtered_NOESY 1.6 mM U-15N, U-13C Ap4A hydrolase
1.6 mM ATP
20 mM U-100% 2H imidazole
32 mM NaF
20 mM MgCl2 100% D2O 120 mM 6.5 ambient 298 5 13C-edited_13C-filtered_NOESY-HSQC 1.6 mM U-15N, U-13C Ap4A hydrolase
1.6 mM ATP
20 mM U-100% 2H imidazole
32 mM NaF
20 mM MgCl2 100% D2O 120 mM 6.5 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600
NMR Refinement Method Details Software torsion angle dynamics, simulated annealing The structures are based on a total of 2948 restraints. 2649 are NOE-based distance restraints, 299 are dihedral angle restraints. VNMR
NMR Ensemble Information Conformer Selection Criteria structures with favorable non-bond energy, structures with the least restraint violations, target function Conformers Calculated Total Number 100 Conformers Submitted Total Number 30 Representative Model 21 (lowest energy)
Additional NMR Experimental Information Details Determined using standard heteronuclear techniques
Computation: NMR Software # Classification Version Software Name Author 1 collection VNMR 6.2 Varian 2 processing NMRPipe 1.1 Delaglio, et al. 3 data analysis XEASY 1.4 Bartels, et al. 4 refinement DYANA 1.5 Guentert, et al. 5 refinement CNS 1.0 Brunger et al.