SOLUTION NMR

NMR Experiment
Experiment Type Sample Contents Ionic Strength Solvent pH Pressure Temprature (K)
1 3D_13C-separated_NOESY 0.2-0.8 mM U-15N,13C; 20 mM sodium phosphate buffer, pH 7.8, 150 mM sodium chloride, 0.02 % sodium azide 150 mM NaCl 90% H2O/10% D2O 7.8 ambient 293
2 3D_15N-separated_NOESY 0.2-0.8 mM U-15N,13C; 20 mM sodium phosphate buffer, pH 7.8, 150 mM sodium chloride, 0.02 % sodium azide 150 mM NaCl 90% H2O/10% D2O 7.8 ambient 293
3 2D NOESY 0.2-0.8 mM U-15N,13C; 20 mM sodium phosphate buffer, pH 7.8, 150 mM sodium chloride, 0.02 % sodium azide 150 mM NaCl 90% H2O/10% D2O 7.8 ambient 293
4 2D_12C-filtered_13C-edited_NOESY 0.2-0.8 mM U-15N,13C; 20 mM sodium phosphate buffer, pH 7.8, 150 mM sodium chloride, 0.02 % sodium azide 150 mM NaCl 90% H2O/10% D2O 7.8 ambient 293
NMR Spectrometer Information
Spectrometer Manufacturer Model Field Strength
NMR Refinement
Method Details Software
simulated annealing Protein NOE restraints were calibrated from peak volumes to distances ranging from 1.8-5.0 using the CANDID module of CYANA v2.1. Initially, 100 structures were calculated with XPLOR-NIH v2.11.0 starting from a partially docked protein-RNA complex. A simulated annealing approach with internal torsion angle dynamics, delphic database potentials and RNA planarity restraints was used. From the initial ensemble of structures, 20 were selected based upon low energy, no NOE violations > 0.5 angstroms and no dihedral angle violations > 5 degrees. Restraints used for the structure calculation: 882 intraresidue protein-protein NOE, 435 sequential protein-protein NOE, 335 medium range protein-protein NOE, 263 long range protein-protein NOE, 80 protein hydrogen bonds, 60 RNA-RNA NOE, 23 protein-RNA NOE, 140 protein dihedral angle, 93 RNA dihedral angle. 1
NMR Ensemble Information
Conformer Selection Criteria structures with the lowest energy
Conformers Calculated Total Number ?
Conformers Submitted Total Number 1
Representative Model 1 (lowest energy)
Computation: NMR Software
# Classification Version Software Name Author
1 structure solution 2.1 CYANA Guentert
2 structure solution 2.11.0 XPLOR-NIH Schweiters
3 refinement 2.11.0 XPLOR-NIH Schweiters