ISDA: 2I1T

SOLUTION NMR

NMR Experiment

Experiment	Type	Sample Contents	Ionic Strength	Solvent	pH	Pressure	Temprature (K)
1	DQF-COSY	6mM Jingzhaotoxin-III, 20mM deuterium sodium acetate buffer, 0.002% NaN3, 0.01mM EDTA, 0.2mM Sodium 3-(trimethylsilyl) propionate-2,2,3,3-d4, pH 4.0, 90% H2O, 10% D2O	20mM	90% H2O/10% D2O	4.0	ambient	303
2	2D TOCSY	6mM Jingzhaotoxin-III, 20mM deuterium sodium acetate buffer, 0.002% NaN3, 0.01mM EDTA, 0.2mM Sodium 3-(trimethylsilyl) propionate-2,2,3,3-d4, pH 4.0, 90% H2O, 10% D2O	20mM	90% H2O/10% D2O	4.0	ambient	303
3	2D NOESY	6mM Jingzhaotoxin-III, 20mM deuterium sodium acetate buffer, 0.002% NaN3, 0.01mM EDTA, 0.2mM Sodium 3-(trimethylsilyl) propionate-2,2,3,3-d4, pH 4.0, 90% H2O, 10% D2O	20mM	90% H2O/10% D2O	4.0	ambient	303

NMR Spectrometer Information

Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500

NMR Refinement

Method	Details	Software
distance geometry, simulated annealing	Structural calculations were performed on 395 interproton distance constraints derived from the 2D NOESY spectra, 13 dihedral angle constraints derived from the coupling constant (DQF-COSY) and NOE measurements, eight hydrogen-bond restraints derived from the hydrogen-deuterium exchange experiments, and nine disulfide bond restraints, giving a total of 425 restraints.	1

NMR Ensemble Information

Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software

#	Classification	Version	Software Name	Author
1	refinement	NIH 2.9.6	X-PLOR	Brunger A. T. etall
2	data analysis	98.0	Felix	Biosym Technologies