1S9O | pdb_00001s9o

Solution structure of the nitrous acid induced DNA interstrand cross-linked dodecamer duplex CGCTAC(G)TAGCG with the cross-linked guanines denoted (G)

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1mM DNA, 10mM phosphate pH 7.0, 200mM NaCl, 1mM EDTA	100% D2O	200mM	7.0	ambient	298
2	DQF-COSY	1mM DNA, 10mM phosphate pH 7.0, 200mM NaCl, 1mM EDTA	90% H2O/10% D2O	200mM	7.0	ambient	298
3	1H-31P HETCOR	200mM	7.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	750
2	Bruker	DRX	500

NMR Refinement
Method	Details	Software
distance geometry, molecular dynamics, matrix relaxation	the structures are based on a total of 647 distance restraints (514 are NOE-derived, 42 from hydrogen bonding, 81 repulsive) and 176 dihedral angle restraints (104 backbone, 72 chiral).	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum
Conformers Calculated Total Number	20
Conformers Submitted Total Number	12
Representative Model	1 (n/a)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	1	Bruker
2	processing	Felix	1	Hare
3	data analysis	Felix	1	Hare
4	structure solution	DGII	1	Biosym
5	structure solution	Discover	1	Biosym
6	iterative matrix relaxation	BIRDER	97	Zhu
7	refinement	Discover	1	Biosym