2G5M

Spinophilin PDZ domain

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 15N resolved [1H,1H] NOESY	1.8 mM PDZ domain, 15N samples; 20 mM Na phosphate buffer 50 mM NaCl, pH 6.5; 90% H2O, 10% D2O	90% H2O/10% D2O	20 mM Na phosphate; 50 mM NaCl	6.5	ambient	298
2	3D 13C resolved [1H,1H] NOESY	1.8 mM PDZ domain, 13C/15N samples; 20 mM Na phosphate buffer 50 mM NaCl, pH 6.5; 90% H2O, 10% D2O	90% H2O/10% D2O	20 mM Na phosphate; 50 mM NaCl	6.5	ambient	298
3	2D 1H-1H NOESY	1.8 mM PDZ domain, 13C/15N samples; 20 mM Na phosphate buffer 50 mM NaCl, pH 6.5; 90% H2O, 10% D2O	100% d20	20 mM Na phosphate; 50 mM NaCl	6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing torsion angle dynamics	The amino acid sequence, the chemical shift assignment, and the NOESY spectra were input for the automated NOESY peak picking and NOE assignment method of ATNOS/CANDID/CYANA. The results of ATNOS/CANDID/CYANA were refined by manual peak adjustment and additional calculations in CYANA. The 20 conformers from the ATNOS/CANDID cycle 7 with the lowest residual CYANA target function values were energy-minimized in a water shell with the program CNS.	TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Additional NMR Experimental Information

Details

The following spectra were used to achieve the sequence-specific backbone and side chain assignments of all aliphatic residues: 2D [1H,15N]-HSQC, 2D [1H,13C]-HSQC, 3D HNCACB, 3D CBCA(CO)NH, 3D CC(CO)NH, 3D HNCO, 3D HNCA, 3D HBHA(CO)NH, 3D 15N-resolved [1H,1H]-TOCSY, 3D HC(C)H-TOCSY6. The 2D [1H,1H]-NOESY, 2D [1H,1H]-TOCSY and 2D [1H,1H]-COSY spectra of the Spinophilin493-602 sample in D2O solution after complete H/D exchange of the labile protons were used for the assignment of the aromatic side chains. The NMR spectra were processed with Topspin1.3, and analyzed with the CARA software package. Spectra used for the structure calculation were: 3D 15N-resolved [1H,1H]-NOESY, 3D 13C-resolved [1H,1H]-NOESY (mixing time of 85 ms) and 2D [1H,1H]-NOESY (mixing time 85 ms, D2O solution).

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	TopSpin	1.3	Bruker
2	structure solution	CYANA	2.0	peter guntert
3	refinement	CNS	1.1	Brunger
4	structure solution	atnos/candid	2.0	Torsten Herrmann
5	data analysis	CARA	1.5	Rochus Keller