1IM1 | pdb_00001im1

NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1, 20 STRUCTURES

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	TOCSY	90% H2O/10% D2O OR 100% D2O			3.0		298
2	ROESY	90% H2O/10% D2O OR 100% D2O			3.0		298
3	DQF-COSY	90% H2O/10% D2O OR 100% D2O			3.0		298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX500	500
2	Bruker	DRX300	300

NMR Refinement
Method	Details	Software
DISTANCE GEOMETRY, RESTRAINED ENERGY REFINEMENT	FOR THE PRESENT STRUCTURES THE NMR DISTANCE CONSTRAINTS WERE WEIGHTED SUCH THAT A VIOLATION OF AN UPPER DISTANCE LIMIT OF 0.1 ANGSTROM CORRESPONDS TO AN ENERGY OF KT/2. THE CONSTRAINTS ON DIHEDRAL ANGLES RESULTING FROM MEASUREMENTS OF VICINAL COUPLING CONSTANTS WERE WEIGHTED SUCH THAT A VIOLATION OF 2.5 DEGREES CORRESPONDS TO AN ENERGY OF KT/2.	OPAL

NMR Ensemble Information
Conformer Selection Criteria	LOWEST RESIDUAL TARGET FUNCTION
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	3 (n/a)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	OPAL		LUGINBUHL,GUNTERT,BILLETER, WUTHRICH
2	structure solution	DYANA
3	structure solution	OPAL