1F5H | pdb_00001f5h

The G7(syn)-G4(anti) structure of r(GCAGGCGUGC)2

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	80 mM NaCl; 10 mM phosphate, pH 7	D2O	80 mM	7	ambient	310.15
2	DQF-COSY	80 mM NaCl; 10 mM phosphate, pH 7	D2O	80 mM	7	ambient	310.15

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	500

NMR Refinement
Method	Details	Software
Simulated annealing; Energy minimization	The structures are based on 88 NOE distance restraints, 11 hydrogen-bond restraints for Watson-Crick pairs, and loosely restrained torsion angles. 22 of 25 structures were used to generate the minimized, averaged structure. G4 was restrained to the syn glycosidic conformation	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy. First model represents the minimized averaged structure
Conformers Calculated Total Number	40
Conformers Submitted Total Number	26
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	VNMR	5.2	Varian
2	data analysis	Felix	95.0	Biosym
3	structure solution	Discover	95.0	Biosym
4	refinement	Discover	95.0	Biosym