1IXT

Structure of a Novel P-Superfamily Spasmodic Conotoxin Reveals an Inhibitory Cystine Knot Motif

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	gm9a peptide	90% H20, 10% D20	NA	5.5	1 atmosphere	278
2	DQF-COSY	gm9a peptide	90% H20, 10% D20	NA	5.5	1 atmosphere	278
3	E-COSY	gm9a peptide	90% H20, 10% D20	NA	5.5	1 atmosphere	278
4	TOCSY	gm9a peptide	90% H20, 10% D20	NA	5.5	1 atmosphere	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	500
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
CNS, minimized in water		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	1.3	Bruker

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.