SOLUTION NMR Experimental Data

Experimental Details
Sample Conditions
Sample Contents1.5mM MutS U-98% 15N,13C; 11mM phosphate buffer;
Solvent90% H2O, 10% D2O
Ionic Strength11mM KXH3-XPO4
Pressure1 atm
Temperature (K)299
Experiment(s):2D NOESY, 3D_13C-separated_NOESY, 3D_15N-separated_NOESY
Spectrometer Information
Manufacturer Model Field Strength
Varian UNITYplus 500.0
NMR Refinement
Method distance geometry, simulated annealing, simulated annealing refinement, energy minimization
Details The MutS structure models 1-15 are based on a total of 1792 restraints, 1553 are NOE-derived distance constraints, 184 dihedral angle restraints, 55 distance restraints from hydrogen bonds. Backbone dihedral angles Phi and Psi were obtained by employing TALOS software [G. Cornilescu et al., J. Biomol. NMR 1999, 13, 289-302]. Phi and Psi torsion angle restraints for the MutS residues 23-30, which form a "nascent" helix [M. Tollinger et al., Structure 1998, 6, 1021-1033], were not used in structure calculations for MutS models 16-30.
NMR Ensemble Information
Conformer Selection Criteria structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number 200
Conformers Submitted Total Number 30
Representative Model Choice Rationale
1 fewest violations
Additional NMR Experimental Information
1 The structure was determined using triple-resonance NMR spectroscopy.
Computation: NMR Software
# Classification Software Name Author
1 refinement X-PLOR Bruenger
2 data analysis TALOS Cornilescu
3 structure solution X-PLOR Bruenger
4 data analysis ANSIG 3.3 Kraulis
5 processing NMRPipe Delaglio