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Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 3D_15N-separated_NOESY 0.8 mM Mj1529, U-15N 95% H2O/5% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303 2 HNHA 0.8 mM Mj1529, U-15N 95% H2O/5% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303 3 4D_13C Separated NOESY 0.8 mM MJ1529, U-15N, U-13C 95% H2O/5% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303 4 4D_13C/15N Separated NOESY 0.8 mM MJ1529, U-15N, U-13C 95% H2O/5% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303 5 D20 Exchange 0.8 mM MJ1529 100% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303 6 3d_13C Separated NOESY 0.8 mM MJ1529, U-13C 94% H20, 5% D2O 50 mM sodium phosphate, 500 mM NaCl 6.2 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AMX 600 2 Bruker DRX 500
NMR Refinement Method Details Software simulated annealing, molecular dynamics in torsion space 150 structures calculated, lowest energy refined with residual dipolar couplings (50 total calculated, taking 10 lowest energy) CNS
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 150 Conformers Submitted Total Number 10 Representative Model 1 (closest to the average)
Computation: NMR Software # Classification Version Software Name Author 1 structure solution CNS 1.1 Brunger 2 processing NMRPipe 1 Bax 3 data analysis NMRView 5.0.4 Johnson 4 refinement CNS 1.1 Brunger