1TTK

NMR solution structure of omega-conotoxin MVIIA, a N-type calcium channel blocker

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM MVIIA, 95% H2O, D2O, DSS	95% H2O/5% D2O		3.5	ambient	293
2	2D TOCSY	2mM MVIIA, 95% H2O, D2O, DSS	95% H2O/5% D2O		3.5	ambient	293
3	DQF-COSY	2mM MVIIA, 95% H2O, D2O, DSS	95% H2O/5% D2O		3.5	ambient	293
4	2D NOESY	2mM MVIIA	100% D2O		3.5	ambient	293
5	2D TOCSY	2mM MVIIA	100% D2O		3.5	ambient	293
6	E-COSY	2mM MVIIA	100% D2O		3.5	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Bruker	AMX	750

NMR Refinement
Method	Details	Software
Solution structures were calculated using torsion angle dynamics/simulated annealing techniques.	A total of 456 distance restraints (including H-bonds) and 31 dihedral distance restraints (including 22 phis and 9 chi angles) were used to calculate the structure.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	17
Representative Model	11 (lowest energy)

Additional NMR Experimental Information
Details	This structure was detrmined using standard 2D homonucelar NMR techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5
2	structure solution	X-PLOR	3.851
3	refinement	X-PLOR	3.851

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.