1CB9

NMR STRUCTURE WITH TIGHTLY BOUND WATER MOLECULES OF CYTOTOXIN II (CARDIOTOXIN) FROM NAJA NAJA OXIANA IN AQUEOUS SOLUTION (MAJOR FORM).

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	COSY	90% WATER/10% D2O; 100% D2O			5.5		303
2	TOCSY	90% WATER/10% D2O; 100% D2O			5.5		303
3	NOESY	90% WATER/10% D2O; 100% D2O			5.5		303
4	ROESY	90% WATER/10% D2O; 100% D2O			5.5		303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITY-600	600

NMR Refinement
Method	Details	Software
SIMULATED ANNEALING BY MOLECULAR DYNAMICS IN TORSION ANGLE SPACE	THE RESTRAINED REFINMENT WAS MADE IN VACUUM AND ONLY FOR PROTEIN SIDE CHAINS.	FANTOM

NMR Ensemble Information
Conformer Selection Criteria	LEAST RESTRAINT VIOLATION (TARGET FUNCTION VALUE)
Conformers Calculated Total Number	220
Conformers Submitted Total Number	20

Additional NMR Experimental Information
Details	THE STRUCTURE WAS DETERMINED BY HOMONUCLEAR NMR SPECTROSCOPY, USING GRADIENT TECHNIQUE. ROESY EXPERIMENTS WERE HELD AT 290 AND 318K.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	FANTOM	4.0	FRACZKIEWICZ, MUMENTHALER, FREYBERG, SCHAUMANN
2	structure solution	VARIAN VNMR	VNMR
3	structure solution	XEASY
4	structure solution	DYANA

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.