1QSK

NMR-DERIVED SOLUTION STRUCTURE OF A FIVE-ADENINE BULGE LOOP WITHIN A DNA DUPLEX

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2.8MM IN DUPLEX; 10MM PHOSPHATE BUFFER, 100MM NACL, 0.05MM EDTA, 100% D2O		100mM NACL	7.0	AMBIENT	300
2	DQF-COSY	2.8MM IN DUPLEX; 10MM PHOSPHATE BUFFER, 100MM NACL, 0.05MM EDTA, 100% D2O		100mM NACL	7.0	AMBIENT	300
3	E-COSY	2.8MM IN DUPLEX; 10MM PHOSPHATE BUFFER, 100MM NACL, 0.05MM EDTA, 100% D2O		100mM NACL	7.0	AMBIENT	300
4	P-COSY	2.8MM IN DUPLEX; 10MM PHOSPHATE BUFFER, 100MM NACL, 0.05MM EDTA, 100% D2O		100mM NACL	7.0	AMBIENT	300
5	2D NOESY	2.8MM IN DUPLEX; 10MM PHOSPHATE BUFFER, 100MM NACL, 0.05MM EDTA, 90% H2O,10% D2O		100mM NACL	7.0	AMBIENT	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	600
2	Varian	UNITY	500

NMR Refinement
Method	Details	Software
TORSION ANGLE DYNAMICS AND RESTRAINED ENERGY MINIMIZATION		VNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	600
Conformers Submitted Total Number	15
Representative Model	6 (fewest violations)

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	4.3	VARIAN
2	processing	NMRPipe	1.7	DELAGLIO
3	iterative matrix relaxation	MARDIGRAS	3.2	BORGIAS & JAMES
4	structure solution	DYANA	1.5	GUNTERT
5	structure solution	Amber	5.0	pearlman
6	refinement	Amber	5.0	pearlman

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.