1SY9

Structure of calmodulin complexed with a fragment of the olfactory CNG channel

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	1.2 mM complex U-15N,13C, 6 mM CaCl2, 140 mM KCl	D2O		6.7		308
2	3D_15N-separated_NOESY	1.2 mM complex U-15N,13C, 6 mM CaCl2, 140 mM KCl, 90% H2O, 10% D2O	90% H2O/10% D2O		6.7		308
3	HNHA	1.2 mM complex U-15N,13C, 6 mM CaCl2, 140 mM KCl, 90% H2O, 10% D2O	90% H2O/10% D2O		6.7		308
4	HSQC	1.2 mM complex U-15N,13C, 6 mM CaCl2, 140 mM KCl, 90% H2O, 10% D2O	90% H2O/10% D2O		6.7		308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics	The structures are based on a total of 3935 restraints: 3050 are NOE-derived distance constraints, 591 are dihedral angle restraints, 133 are distance restraints from hydrogen bonds. 68 scalar J coupling constants and 93 Residual Dipolar Coupling constants were included as experimental restraints necessary to obtain the final structures.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	60
Conformers Submitted Total Number	20

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR
2	data analysis	NMRPipe
3	refinement	X-PLOR	3.85