1I4V

SOLUTION STRUCTURE OF THE UMUD' HOMODIMER

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNHA	0.9 mM UmuD' U-15N; 150 mM NaCl, 10 mM phosphate, pH 6.0, 1mM DTT, 0.1 mM EDTA	95% H2O/5% D2O	150 mM NaCl	6.0	ambient	303
2	3D_15N-separated_NOESY	0.9 mM UmuD' U-15N; 150 mM NaCl, 10 mM phosphate, pH 6.0, 1mM DTT, 0.1 mM EDTA	95% H2O/5% D2O	150 mM NaCl	6.0	ambient	303
3	2D_NOESY	1.5 mM UmuD' unlabeled; 150 mM NaCl, 20 mM phosphate, pH 6.0, 1 mM DTT, 0.1 mM EDTA	95% H20, 5% D2O	150 mM NaCl	6.0	ambient	303
4	2D_NOESY	1.4 mM UmuD' unlabeled; 150 mM NaCl, 20 mM phosphate, pH 6.0, 1 mM DTT, 0.1 mM EDTA	100% D2O	150 mM NaCl	6.0	ambient	303
5	3D_13C-separated_NOESY	1.3 mM UmuD' U-15N,13C; 150 mM NaCl, 20 mM phosphate, pH 6.0, 1 mM DTT, 0.1 mM EDTA	95% H2O/5% D2O	150 mM NaCl	6.0	ambient	303
6	3D_15N-separated_NOESY	2.7 mM UmuD' U-100% 2H,15N and 2.7 mM unlabeled UmuD'; 150 mM NaCl, 20 mM phosphate, pH 6.0, 1 mM DTT, 0.1 mM EDTA	95% H20, 5% D2O	150 mM NaCl	6.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	750
2	Varian	UNITYPLUS	400
3	Bruker	AMX	600
4	Bruker	AMX	500
5	Varian	VXR	500

NMR Refinement
Method	Details	Software
simulated annealing		Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	97.0	Molecular Simulations Inc.
2	data analysis	XEASY	1.3.9	Bartels et al
3	refinement	X-PLOR	3.851	Brunger