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SOLUTION NMR

NMR Experiment
Experiment Type Sample Contents Ionic Strength Solvent pH Pressure Temprature (K)
1 2D NOESY 1mM B4dimer, trimethylsilylpropionate, 90% H2O, 10% D2O unbuffered 90% H2O/10% D2O 3.5 ambient 323
2 DQF-COSY 1mM B4dimer, trimethylsilylpropionate, 90% H2O, 10% D2O unbuffered 90% H2O/10% D2O 3.5 ambient 323
3 TOCSY 1mM B4dimer, trimethylsilylpropionate, 90% H2O, 10% D2O unbuffered 90% H2O/10% D2O 3.5 ambient 323
NMR Spectrometer Information
Spectrometer Manufacturer Model Field Strength
1 Bruker DRX 500
NMR Refinement
Method Details Software
torsion angle dynamics/ simulated annealing The nineteen structures were determined by NMR and torsion angle dynamics/simulated annealing methods. The peptide dimer was treated as a single entity and symmetry elements were not utilized during structure calculations. The structures are based on a total of 276 NOE-derived restraints. The list of constraints is available in the file water_uppercons.txt. Structure calculations were performed with the program DYANA-1.5 (P. Guentert, C. Mumenthaler, K. Wuthrich, J. Mol. Biol.(1997)Vol.273, 283-298). No violation of distance constraints from NOEs exceeded 0.3Angstroms. The ensemble of structures is superimposed over the best-structured region encompasing residues V19-L34. Residues 1-11 were unstructured and their co-ordinates are not given. The average RMSDs between the superposed structures and the average structure are as follows: 1.04(chain A, residues 20-34, backbone atoms) 0.91(chain B, residues 20-34, backbone atoms). 1
NMR Ensemble Information
Conformer Selection Criteria structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number 400
Conformers Submitted Total Number 19
Representative Model 2 (closest to the average)
Computation: NMR Software
# Classification Version Software Name Author
1 structure solution 1.5 DYANA Guentert
2 refinement 1.5 DYANA Guentert
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