2AXL

Solution structure of a multifunctional DNA- and protein-binding domain of human Werner syndrome protein

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	D_15N-separated_NOESY	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2
2	3D_15N-separated_NOESY	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2
3	4D_13C-separated_NOESY	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2
4	4D_13C/15N-separated_NOESY	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2
5	HNHA	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2
6	HNCG_arom, HN(CO)CG_arom	0.35 mM in KPi buffer (pH7.4) 25 mM NaCl	92.5% H2O/7.5% D2O	25 mM KPi + 25 mM NaCl	7.4	1 atm	295.2

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600

NMR Refinement
Method	Details	Software
simulated annealing torsion angle dynamics		xplor-nih

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum,structures with acceptable covalent geometry
Conformers Calculated Total Number	40
Conformers Submitted Total Number	10
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	HCCH-COSY was optimized for detection for CH3 groups, 2D spin echo for 1H-13C HSQC selected for aromatic and Carbonyl containing residues

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	xplor-nih	XPLOR-NIH	Schwieters, C.D., Kuszewski, J., Tjandra, N. & Clore, G.M. (2003)
2	refinement	xplor-nih	XPLOR-NIH	Schwieters, C.D., Kuszewski, J., Tjandra, N. & Clore, G.M. (2003)