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Structure of calmodulin complexed with a fragment of the olfactory CNG channel
SOLUTION NMR
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.