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Three dimensional solution structure of the R29A MUTANT of sodium channels inhibitor HAINANTOXIN-IV by 2D 1H-NMR
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
NOESY
5.0mM
20mM deuterium acetic acid BU, 90% H2O, 10% D2O
20
4.00
1 atm
295
2
DQF-COSY
5.0mM
20mM deuterium acetic acid BU, 90% H2O, 10% D2O
20
4.00
1 atm
295
3
TOCSY
5.0mM
20mM deuterium acetic acid BU, 90% H2O, 10% D2O
20
4.00
1 atm
295
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DRX
500
NMR Refinement
Method
Details
Software
simulated annealing
the structures are based on 366 NOE- derived distance constraints, 15 dihedral angle restraints, 9 fake distance restraints from disulfide bonds and 12 hydrogen- bond constrains.
X-PLOR
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
50
Conformers Submitted Total Number
20
Representative Model
13 (lowest energy)
Additional NMR Experimental Information
Details
this structure was determined using standard 2D homonuclear techniques.