SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents1 mM U-15N,13C SF1 KH-QUA2/unlabeled BPS in 20 mM phosphate buffer NA pH 6.5, 50 mM NaCl, 2 mM DTT
Solvent100% D2O
Ionic Strength50 mM NaCl
pH6.5
Pressureambient
Temperature (K)295
Experiment(s):3D_13C-separated_NOESY, 3D_13C/15N_edited/filtered_NOESY
Sample Contents1 mM U-15N SF1 KH-QUA2/unlabeled BPS in 20 mM phosphate buffer NA pH 6.5, 50 mM NaCl, 2 mM DTT
Solvent90% H2O, 10% D2O
Ionic Strength50 mM NaCl
pH6.5
Pressureambient
Temperature (K)295
Experiment(s):3D_15N-separated_NOESY
Spectrometer Information
Manufacturer Model Field Strength
Bruker DRX 800.0
Bruker DRX 600.0
Bruker DRX 500.0
NMR Refinement
Method restrained molecular dynamics, simulated annealing
Details STRUCTURES WERE CALCULATED WITH A MIXED TORSION AND CARTESIAN ANGLE DYNAMICS PROTOCOL USING ARIA/CNS. A REDUCED RELAXATION MATRIX APPROACH WAS USED FOR THE NOE CALIBRATION. THE STRUCTURES ARE CURRENTLY BEING REFINED USING RESIDUAL DIPOLAR COUPLINGS AND WILL BE UPDATED IN THE FUTURE.
NMR Ensemble Information
Conformer Selection Criteria 10 lowest energy structures consistent with experimental distance and dihedral angle restraints
Conformers Calculated Total Number 100
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 lowest energy
Additional NMR Experimental Information
1 Backbone and side chain 1H, 15N and 13C resonances were assigned using standard triple resonance experiments. Distance restraints were derived from 13C- and 15N-edited 3D NOESY experiments. Assignments for the RNA were obtained from 2D isotope-filtered experiments. Intermolecular distance restraints were measured in 3D 13C-edited/filtered experiments. Dihedral angle restraints for the backbone angle phi were derived from 3J(HN,Ha) coupling constants measured in an HNHA-J experiment, additional phi/psi restraints were derived from TALOS. Hydrogen bond restraints for secondary structure elements in the protein were defined from slowly exchanging amide protons, identified after exchange of the H2O buffer to D2O.
Computation: NMR Software
# Classification Software Name Author
1 refinement ARIA/CNS 1.0 J. Linge, M. Nilges
2 structure solution ARIA/CNS 1.0 J. Linge, M. Nilges
3 data analysis XEASY 1.2 Ch. Bartels, T.-H. Xia, M. Billeter, P. Gntert and K. Wthrich
4 processing NMRPipe 1.8 F. Delaglio, S. Grzesiek, G. Vuister, G. Zhu, J. Pfeifer, & A. Bax
5 collection XWINNMR 2.6 Bruker