1SS7 | pdb_00001ss7

Compensating bends in a 16 base-pair DNA oligomer containing a T3A3 segment

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1 mM DNA	90% H2O/10% D2O	400 mM NaCl, 40mM phosphate	7	ambient	308
2	DQF-COSY	1 mM DNA	90% H2O/10% D2O	400 mM NaCl, 40mM phosphate	7	ambient	308
3	2D 13C-1H CT-TROSY-HSQC	1 mM DNA	90% H2O/10% D2O	400 mM NaCl, 40mM phosphate	7	ambient	308
4	2D 15N-1H TROSY-HSQC	1 mM DNA	90% H2O/10% D2O	400 mM NaCl, 40mM phosphate	7	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	750
2	Varian	UNITYPLUS	500

NMR Refinement
Method	Details	Software
Restrained molecular dynamics	Structures are based on a total of 316 NOE, 90 torsion angle, and 6 distance restraints represented each W-C base-pair. For the RDC structures an additional 88 one-bond C-H and 14 one-bond N-H residual dipolar coupling restraints were used	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	45
Conformers Submitted Total Number	15
Representative Model	1 (closest to the average)

Additional NMR Experimental Information
Details	Heteronuclear dipolar couplings were measured in samples aligned with filamentous Pf1 bacteriophage

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	98	MSI
2	refinement	X-PLOR	3.85	Brunger, Tjandra
3	iterative matrix relaxation	BIRDER	96	Zhu, Reid