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Solution Structure of the N-utilization substance G (NusG) C-terminal (NGC) domain from Thermus thermophilus
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 2mM NusG C-domain, 50mM phosphate buffer, 100mM KCL, 95% H2O, 5% D2O 95% H2O/5% D2O 50mM phospahte, 100mM KCl 5.5 ambient 318 2 HSQC 2mM 15N NusG C-domain, 50mM phosphate buffer, 100mM KCL 100% D2O 50mM phospahte, 100mM KCl 5.5 ambient 318 3 HMQC-J 2mM 15N NusG C-domain, 50mM phosphate buffer, 100mM KCL, 95% H2O, 5% D2O 95% H2O/5% D2O 50mM phospahte, 100mM KCl 5.5 ambient 318
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DMX 500 2 Bruker DMX 750
NMR Refinement Method Details Software simulated annealing, molecular dynamics, torsion angle dynamics 566 UNAMBIGUOUS NOE DISTANCE RESTRAINTS, 52 HYDROGEN BOND RESTRAINTS, 46 HN-N DIPOLAR COUPLINGS, NO RESONANCES WERE ASSIGNED FOR ALA 127 XwinNMR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy, NONE WITH DISTANCE VIOLATIONS > 0.2 ANGSTROMS, NONE WITH DIHEDRAL ANGLE RESTRAINT VIOLATIONS > 2 DEGREES Conformers Calculated Total Number 90 Conformers Submitted Total Number 31 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details Model 31 is the minimized average structure
Computation: NMR Software # Classification Version Software Name Author 1 processing XwinNMR 2.6 Bruker 2 data analysis ANSIG 3.3 Kraulis 3 structure solution CNS 1.1 Brunger 4 refinement CNS 1.1