2MCJ

NMR structure of spermine modified DNA duplex

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 100 % [U-100% 2H] D2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	100% D2O	60	7.0	ambient	298
2	2D 1H-1H COSY	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 100 % [U-100% 2H] D2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	100% D2O	60	7.0	ambient	298
3	2D 1H-1H TOCSY	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 100 % [U-100% 2H] D2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	100% D2O	60	7.0	ambient	298
4	2D 1H-13C HSQC	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 100 % [U-100% 2H] D2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	100% D2O	60	7.0	ambient	298
5	2D 1H-31P HSQC	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 100 % [U-100% 2H] D2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	100% D2O	60	7.0	ambient	298
6	2D 1H-1H NOESY	0.5 mM DNA (5'-D(*GP*TP*CP*GP*GP*CP*TP*G)-3'), 0.5 mM DNA (5'-D(*CP*AP*GP*CP*(N4S)P*GP*AP*C)-3'), 10 % [U-100% 2H] D2O, 90 % H2O, 50 mM sodium chloride, 10 mM sodium phosphate, 0.1 mM EDTA	90% H2O/10% D2O	60	7.0	ambient	283

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

NMR Refinement
Method	Details	Software
torsion angle dynamics		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH	v2.22	Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR NIH	v2.22	Schwieters, Kuszewski, Tjandra and Clore
3	collection	TopSpin	v2.0	Bruker Biospin
4	processing	TopSpin	v2.0	Bruker Biospin
5	chemical shift assignment	Felix	v2002	Accelrys Software Inc.
6	data analysis	Felix	v2002	Accelrys Software Inc.
7	peak picking	Felix	v2002	Accelrys Software Inc.