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Three dimensional solution structure of the K27A 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 378 NOE-derived distance constraints, 13 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
1 (lowest energy)
Additional NMR Experimental Information
Details
this structure was determined using standard 2D homonuclear techniques.