Experiment: 1Z87

solution structure of the split PH-PDZ Supramodule of alpha-Syntrophin

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNCO,HNCA, HN(CO)CA, HNCACB, CBCA(CO)NH	1mM PHN-PDZ-PHC tandem of alpha1-syntrophin U-15N, 13C; 100mM potassium phosphate; 90% H2O,10% D2O	90% H2O/10% D2O		7.0	ambient	303
2	3D_15N-separated_NOESY	1mM PHN-PDZ-PHC tandem of alpha1-syntrophin U-15N; 100mM potassium phosphate; 90% H2O,10% D2O	90% H2O/10% D2O		7.0	ambient	303
3	3D_13C-separated_NOESY	1mM PHN-PDZ-PHC tandem of alpha1-syntrophin U-15N, 13C; 100mM potassium phosphate; 99.9% D2O	99.9% D2O		7.0	ambient	303
4	2D NOESY	1mM PHN-PDZ-PHC tandem of alpha1-syntrophin; 100mM potassium phosphate; 99.9% D2O	99.9% D2O		7.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	750

NMR Refinement
Method	Details	Software
simulated annealing	the structures are based on a total of 2924 restraints, 2600 are NOE-derived distance constraints, 184 dihedral angle restraints,140 distance restraints from hydrogen bonds. this ensemble structure could not be superimposed because this protein fragment is a PH-PDZ tandem, and the linker is very flexible.	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	15
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS	1.1	Bruger, A.T.