1GJ0

NMR STRUCTURE OF AN OLIGONUCLEOTIDE CONTAINING AN ABASIC SITE: BETA ANOMER

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	NOESY	2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	D2O	10 mM sodium phosphate buffer	6.8	ambient	293
2	PE-COSY	2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	D2O	10 mM sodium phosphate buffer	6.8	ambient	293
3	watergate-NOESY	2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	10% D2O, 90% H2O	10 mM sodium phosphate buffer	6.8	ambient	278
4	31P-HCOSY	3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	D2O	10 mM sodium phosphate buffer	6.8	ambient	298
5	31P-decoupled-PE-COSY	3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	D2O	10 mM sodium phosphate buffer	6.8	ambient	298
6	31P-decoupled-J-scaled-DQCOSY	3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer	D2O	10 mM sodium phosphate buffer	6.8	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Home-built	HOME-BUILT	750
2	Home-built	HOME-BUILT	600

NMR Refinement
Method	Details	Software
molecular dynamics	THE STRUCTURE IS BASED ON 475 NOE-DERIVED DISTANCE CONSTRAINTS AND 101 DIHEDRAL ANGLE RESTRAINTS.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	1

Additional NMR Experimental Information
Details	THE ABASIC SITE DEOXYRIBOSE 1H-1H COUPLING CONSTANTS AND THE DNA 31P-H3' COUPLING CONSTANTS WERE EXPERIMENTALLY DETERMINED. THIS INFORMATION WAS USED IN THE MODELING PROTOCOL.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.851	Brunger
2	processing	Felix	95.0	MSI
3	data analysis	Felix	95.0	MSI
4	refinement	X-PLOR	3.851	Brunger