Experiment: 2AWT

Solution Structure of Human Small Ubiquitin-Like Modifier Protein Isoform 2 (SUMO-2)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	0.8mM SUMO-2 U-15N, 13C; 50mM phosphate buffer pH 6.0; 150mM NaCl; 1mM EDTA; 1mM DSS; 0.01% sodium azide; 90% H2O, 10% D2O	90% H2O/10% D2O	50mM sodium phosphate, 150mM NaCl	6.0	ambient	303
2	3D_15N-separated_NOESY	0.8mM SUMO-2 U-15N, 13C; 50mM phosphate buffer pH 6.0; 150mM NaCl; 1mM EDTA; 1mM DSS; 0.01% sodium azide; 90% H2O, 10% D2O	90% H2O/10% D2O	50mM sodium phosphate, 150mM NaCl	6.0	ambient	303
3	HNHA	0.8mM SUMO-2 U-15N, 13C; 50mM phosphate buffer pH 6.0; 150mM NaCl; 1mM EDTA; 1mM DSS; 0.01% sodium azide; 90% H2O, 10% D2O	90% H2O/10% D2O	50mM sodium phosphate, 150mM NaCl	6.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing, torsion angle dynamics	936 total restraints, of which 856 are NOE-derived distance constraints, 59 are dihedral angle restraints, 21 are distance restraints from hydrogen bonds	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5	Bruker
2	data analysis	CARA	1.1	Keller
3	structure solution	CYANA	2.0	Guentert
4	refinement	CYANA	2.0	Guentert