1JKN
Solution Structure of the Nudix Enzyme Diadenosine Tetraphosphate Hydrolase from Lupinus angustifolius Complexed with ATP
SOLUTION NMR
NMR Experiment | ||||||||
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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 | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 600 |
NMR Refinement | ||
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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 | |
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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 | |
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Details | Determined using standard heteronuclear techniques |
Computation: NMR Software | ||||
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# | 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. |