1NGU

NMR Structure of Putative 3'Terminator for B. Anthracis pagA Gene Noncoding Strand

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM 110NC DNA; 10mM phosphate buffer pH 6.5; 150mM NaCl;	90% H2O/10% D2O	150mM NaCl	6.5	ambient	278
2	2D NOESY	2mM 110NC DNA; 10mM phosphate buffer pH 6.5; 150mM NaCl;	100% D2O	150mM NaCl	6.5	ambient	278
3	2D TOCSY	2mM 110NC DNA; 10mM phosphate buffer pH 6.5; 150mM NaCl;	100% D2O	150mM NaCl	6.5	ambient	278
4	DQF-COSY	2mM 110NC DNA; 10mM phosphate buffer pH 6.5; 150mM NaCl;	100% D2O	150mM NaCl	6.5	ambient	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
minimization molecular dynamics	Structure is derived from 206 NOEs of which, 23 NOEs involvE exchangeable protons in the stem, 131 NOEs involve non-exchangeable protons in the stem, 52 NOEs involve non-exchangeable protons in the loop, 46 Distance restraints involve hydrogen bonds, and 44 dihedral angle restraints.	Felix

NMR Ensemble Information
Conformer Selection Criteria	Submitted conformers include minimized average from molecular dynamics and 4 representative diverging structures.
Conformers Calculated Total Number	100
Conformers Submitted Total Number	5
Representative Model	1 (minimized average structure)

Additional NMR Experimental Information
Details	The structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	Felix	98	Biosym
2	structure solution	Amber	4.1	Pearlman, D.A., Case, D.A., Caldwell, J.W., Ross, W.S., Cheatham, T.E., Ferguson, D.M., Seibel, G.L., Singh, U.C., Weiner, P.K., and Kollman, P.A.
3	refinement	Amber	4.1	Pearlman, D.A., Case, D.A., Caldwell, J.W., Ross, W.S., Cheatham, T.E., Ferguson, D.M., Seibel, G.L., Singh, U.C., Weiner, P.K., and Kollman, P.A.