1DSW

THE SOLUTION STRUCTURE OF A MONOMERIC, REDUCED FORM OF HUMAN COPPER, ZINC SUPEROXIDE DISMUTASE BEARING THE SAME CHARGE AS THE NATIVE PROTEIN

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 15N NOESY-HSQC	2MM M4SOD FULLY ENRICHED IN 15N; 20MM PHOSPHATE BUFFER PH 5.0; 90% H2O, 10% D2O. THE PROTEIN WAS REDUCED WITH SODIUM ISOASCORBATE UNDER UNAEROBIC CONDITIONS.			5.00	ATMOSPHERIC atm	298.00
2	3D HNHA	2MM M4SOD FULLY ENRICHED IN 15N; 20MM PHOSPHATE BUFFER PH 5.0; 90% H2O, 10% D2O. THE PROTEIN WAS REDUCED WITH SODIUM ISOASCORBATE UNDER UNAEROBIC CONDITIONS.			5.00	ATMOSPHERIC atm	298.00
3	2D NOESY	2MM M4SOD FULLY ENRICHED IN 15N; 20MM PHOSPHATE BUFFER PH 5.0; 90% H2O, 10% D2O. THE PROTEIN WAS REDUCED WITH SODIUM ISOASCORBATE UNDER UNAEROBIC CONDITIONS.			5.00	ATMOSPHERIC atm	298.00

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
THE NMR STRUCTURE CALCULATION PROGRAM USED DYANA THAT USES SIMULATED ANNEALING COMBINED WITH MOLECULAR DYNAMICS IN TORSION ANGLE SPACE (TORSION ANGLE DYNAMICS)	INTENSITIES OF DIPOLAR CONNECTIVITIES IN 3D NOESY-HSQC, 3D HNHA AND 2D NOESY WERE MEASURED WITH THE INTEGRATION ROUTINES OF THE PROGRAM XEASY. PEAK VOLUMES WERE CONVERTED INTO UPPER DISTANCE LIMITS BY FOLLOWING THE METHODOLOGY OF THE PROGRAM CALIBA. 3JHNHA COUPLING CONSTANTS WERE OBTAINED FROM THE RATIO BETWEEN THE INTENSITY OF THE DIAGONAL PEAK AND THAT OF THE CROSS PEAK OF THE 3D HNHA EXPERIMENT. THE 3D STRUCTURE WAS CALCULATED WITH THE PROGRAM DYANA; THE FINAL DYANA FAMILY WAS FORMED BY THE 36 CONFORMERS WITH THE LOWEST TARGET FUNCTION. REFINEMENT WAS PERFORMED THROUGH RESTRAINED ENERGY MINIMIZATION WITH THE SANDER MODULE OF THE PROGRAM AMBER. NOESY CROSS PEAKS WERE BACK -CALCULATED ON THE FINAL STRUCTURE WITH THE PROGRAM CORMA.	Amber

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	1
Representative Model	1 (n/a)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	Amber	4.0	PEALRMAN, DA, ET AL. (1991)
2	structure solution	XwinNMR	2.1
3	structure solution	CALIBA	1.5
4	structure solution	DYANA	1.4
5	structure solution	CORMA