SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents0.7 mM viscotoxin B; phosphate buffer pH 3.6 50mM; 90%H20, 10% D2O
Solvent90%H20, 10% D2O
Ionic Strength50mM phosphate buffer
pH3.6
Pressureambient
Temperature (K)285
Experiment(s):2D TOCSY, 2D NOESY, DQF-COSY
Sample Contents0.7 mM viscotoxin B; phosphate buffer pH 3.6 50mM; 90%H20, 10% D2O
Solvent90%H20, 10% D2O
Ionic Strength50mM phosphate buffer
pH3.6
Pressureambient
Temperature (K)295
Experiment(s):2D TOCSY, 2D NOESY, DQF-COSY
Sample Contents0.7 mM viscotoxin B; phosphate buffer pH 3.6 50mM; D2O
SolventD2O
Ionic Strength50mM phosphate buffer
pH3.6
Pressureambient
Temperature (K)285
Experiment(s):2D TOCSY, 2D NOESY
Spectrometer Information
Manufacturer Model Field Strength
Bruker DMX 500.0
Bruker DRX 500.0
NMR Refinement
Method DYANA was employed for structure determination Discover was employed for energy minimisation of DYANA structures
Details the structures are based on a total of 691 restraints. 631 are NOE-derived distance restraints,(224intraresidues,159 short range, 125 medium range and 123 long range), 18 dihedral angle restraints, 24 for backbone H-bonds and 18 for disulphide bridges. Bond lengths CD-OE2 in glutamic acid residues and CG-OD2 in aspartic acid residues are larger than typical values (as seen in remark 500) because protonated forms were considered due to the low experimental pH.
NMR Ensemble Information
Conformer Selection Criteria structures with the lowest energy
Conformers Calculated Total Number 600
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 lowest energy
Additional NMR Experimental Information
1 This structure was determined using standard 1H 2D NMR techniques
Computation: NMR Software
# Classification Software Name Author
1 refinement DISCOVER 1997 version Molecular Simulations, san Diego, CA, USA
2 data analysis XEASY 1.3 Xia and Bartels
3 processing XWINNMR 2.6 Bruker
4 structure solution DISCOVER 1997 version Molecular Simulations, san Diego, CA, USA
5 structure solution DYANA 1.4 Guentert