1EYF

REFINED STRUCTURE OF THE DNA METHYL PHOSPHOTRIESTER REPAIR DOMAIN OF E. COLI ADA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2 mM N-Ada10; 25 mM sodium phosphate buffer pH 6.4, 50 mM NaCl, and 10 mM 2-mercaptoethanol; 90% H2O, 10% D2O	90% H2O/10% D2O		6.4	ambient	298
2	2D NOESY	2 mM N-Ada10; 25 mM sodium phosphate buffer pH 6.4, 50 mM NaCl, and 10 mM 2-mercaptoethanol; 100% D2O	90% H2O/10% D2O		6.4	ambient	298
3	3D_15N-separated_NOESY	2 mM N-Ada10 U-15N; 25 mM sodium phosphate buffer pH 6.4, 50 mM NaCl, and 10 mM 2-mercaptoethanol; 90% H2O, 10% D2O	100% D2O		6.4	ambient	298
4	HNHA	2 mM N-Ada10 U-15N; 25 mM sodium phosphate buffer pH 6.4, 50 mM NaCl, and 10 mM 2-mercaptoethanol; 90% H2O, 10% D2O	100% D2O		6.4	ambient	298

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

NMR Refinement
Method	Details	Software
distance geometry	the structures are based on a total of 1014 restraints, 872 are NOE-derived distance constraints, 82 dihedral angle restraints,46 distance restraints from hydrogen bonds, and 14 zinc cluster distance restraints	UXNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	25
Representative Model	13 (lowest energy)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear and 3D heteronuclear techinques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	UXNMR
2	collection	VNMR
3	processing	Felix	95
4	data analysis	XEASY		Brartels et al
5	structure solution	DGII		Havel et al
6	refinement	DGII		Havel et al