2AF2

Solution structure of disulfide reduced and copper depleted Human Superoxide Dismutase

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.5mM 15N protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
2	HNHA	1.5mM 15N protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
3	3D_15N-separated_NOESY	1mM 15N;13C protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
4	3D_13C-separated_NOESY	1mM 15N;13C protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
5	H(C)CH_TOCSY	1mM 15N;13C protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
6	(H)CCH_TOCSY	1mM 15N;13C protein sample	20mM sodium phosphate, 20mM DTT buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
7	TROSY-HNCACB	1mM 15N;13C;2H protein sample. The triple labeled dimeric SOD contained about 70% 2H	20mM sodium phosphate, 20mM DTT, buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
8	TROSY-HNCA	1mM 15N;13C;2H protein sample. The triple labeled dimeric SOD contained about 70% 2H	20mM sodium phosphate, 20mM DTT, buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
9	TROSY_HN(CO)CA	1mM 15N;13C;2H protein sample. The triple labeled dimeric SOD contained about 70% 2H	20mM sodium phosphate, 20mM DTT, buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
10	TROSY_HNCO	1mM 15N;13C;2H protein sample. The triple labeled dimeric SOD contained about 70% 2H	20mM sodium phosphate, 20mM DTT, buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298
11	TROSY_HN(CA)CO	1mM 15N;13C;2H protein sample. The triple labeled dimeric SOD contained about 70% 2H	20mM sodium phosphate, 20mM DTT, buffer, pH 5, 90% H2O, 10% D2O	20mM sodium phosphate	5	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500
2	Bruker	AVANCE	700
3	Bruker	AVANCE	800
4	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
torsion angle dynamics, sumulated annealing, restrained energy minimization		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	600
Conformers Submitted Total Number	30
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	The reduction of disulfide bridge was accomplished by addition of dithiothreitol (DTT)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR		Bruker
2	data analysis	NEASY
3	structure solution	CYANA	1.03	Herrmann, T., Guntert, P., and Wuthrich, K
4	refinement	Amber	8	Pearlman, D. A., Case, D. A., Caldwell, J. W., Ross, W. S., Cheatham, T. E., Ferguson, D. M., Seibel, G. L., Singh, U. C., Weiner, P. K., and Kollman, P. A

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.