2HMD | pdb_00002hmd

Stereochemistry Modulates Stability of Reduced Inter-Strand Cross-Links Arising From R- and S-alpha-methyl-gamma-OH-1,N2-propano-2'-Deoxyguanine in the 5'-CpG-3' DNA Sequence

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2 mM in 0.25 mL; 10 mM NaH2PO4; 0.1 M NaCl; 50 uM Na2EDTA	99.996% D2O	0.1M NaCl	7.0	1 atm	303
2	DQF-COSY	2 mM in 0.25 mL; 10 mM NaH2PO4; 0.1 M NaCl; 50 uM Na2EDTA	99.996% D2O	0.1M NaCl	7.0	1 atm	303
3	2D TOCSY	2 mM in 0.25 mL; 10 mM NaH2PO4; 0.1 M NaCl; 50 uM Na2EDTA	99.996% D2O	0.1M NaCl	7.0	1 atm	303
4	2D NOESY	2 mM in 0.25 mL; 10 mM NaH2PO4; 0.1 M NaCl; 50 uM Na2EDTA	9:1 H2O:D2O	0.1M NaCl	7.0	1 atm	286

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	AVANCE	600
3	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
distance geometry; simulated annealing; molecular dynamics; matrix relaxation		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum
Conformers Calculated Total Number	10
Conformers Submitted Total Number	1
Representative Model	1 (minimized average structure)

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	3.5	Bruker
2	processing	NMRPipe	2.3	Delaglio F et al.
3	data analysis	Felix	2000	Accelrys, Inc.
4	iterative matrix relaxation	MARDIGRAS	5.2.1	Borgias, B.A. et al.
5	refinement	Amber	8.0	Case et al
6	data analysis	CORMA	5.2	Keepers JW et al.