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NMR Solution Structures of delta-Conotoxin EVIA from Conus ermineus that Selectively Acts on Vertebrate Neuronal Na+ Channels
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
NOESY
2mM conotoxin EVIA; 90% H2O, 10% D2O
90% H2O/10% D2O
0.01
3.0
ambient
283
2
DQF-COSY
2mM conotoxin EVIA; 90% H2O, 10% D2O
90% H2O/10% D2O
0.01
3.0
ambient
283
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DRX
500
NMR Refinement
Method
Details
Software
hybrid distance geometry dynamical simulated annealing with the allhdg force field and simulated annealing with the CHARMM22 force field
the structures are based on a total of 256 restraints, 210 are NOE-derived distance constraints, 24 dihedral angle restraints and 22 distance restraints from hydrogen bonds.
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number
30
Conformers Submitted Total Number
18
Representative Model
13 (closest to the average)
Additional NMR Experimental Information
Details
This structure was determined using standard 2D homonuclear techniques