1G22

SOLUTION STRUCTURE OF A MODIFIED HUMAN CENTROMERIC FRAGMENT

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 OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
2	DQF-COSY	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
3	TOCSY	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
4	31P-1H HETERO-TOCSY	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
5	13C-1H HSQC	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
6	HMBC	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288
7	31P-1H HETERO-COSY	1 mM OF UNLABELED DNA	H2O	~10mM NaCL	5.8	AMBIENT	288

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

NMR Refinement
Method	Details	Software
NMR-BASED SIMULATED ANNEALING		X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	1
Representative Model	1 (fewest violations and lowest energy)

Additional NMR Experimental Information
Details	THE STRUCTURE WAS DETERMINED USING 2D HOMONUCLEAR AND NATURAL ABUNDANCE HETERONUCLEAR TECHNIQUES AT A TEMPERATURES 260-288.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.851	BRUNGER, A.T.
2	processing	Felix	98	MSI
3	collection	VNMR	6.2	VARIAN
4	data analysis	MOLMOL	2.4	Koradi et al.
5	data analysis	Curves		Lavery & Sklenar