2KKT

Solution structure of the SCA7 domain of human Ataxin-7-L3 protein

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNCO	50mM sodium phosphate-1, 200mM sodium chloride-2, 2mM DTT-3, 0.15mM [U-99% 13C; U-99% 15N] protein-4	90% H2O/10% D2O	0.3	7.1	ambient	295
2	3D HNCA	50mM sodium phosphate-1, 200mM sodium chloride-2, 2mM DTT-3, 0.15mM [U-99% 13C; U-99% 15N] protein-4	90% H2O/10% D2O	0.3	7.1	ambient	295
3	3D HNCACB	50mM sodium phosphate-1, 200mM sodium chloride-2, 2mM DTT-3, 0.15mM [U-99% 13C; U-99% 15N] protein-4	90% H2O/10% D2O	0.3	7.1	ambient	295
4	3D HN(CO)CA	50mM sodium phosphate-1, 200mM sodium chloride-2, 2mM DTT-3, 0.15mM [U-99% 13C; U-99% 15N] protein-4	90% H2O/10% D2O	0.3	7.1	ambient	295
5	3D HCCH-TOCSY	50mM sodium phosphate-1, 200mM sodium chloride-2, 2mM DTT-3, 0.15mM [U-99% 13C; U-99% 15N] protein-4	90% H2O/10% D2O	0.3	7.1	ambient	295
6	2D 1H-1H NOESY	50mM sodium phosphate-5, 200mM sodium chloride-6, 2mM DTT-7, 0.6mM protein-8	90% H2O/10% D2O	0.3	7.1	ambient	295
7	2D 1H-1H TOCSY	50mM sodium phosphate-5, 200mM sodium chloride-6, 2mM DTT-7, 0.6mM protein-8	90% H2O/10% D2O	0.3	7.1	ambient	295

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	AVANCE	950

NMR Refinement
Method	Details	Software
simulated annealing	In explicit water using RECOORD protocol	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	64
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore