1KLS

NMR Structure of the ZFY-6T[Y10L] Zinc Finger

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM ZFY-6T[Y10L]	90% H2O/10% D2O	50mM d11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
2	2D NOESY	2mM ZFY-6T[Y10L]	99.98% D2O.	50mM d11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
3	DQF-COSY	2mM ZFY-6T[Y10L]	90% H2O/10% D2O	50mM d11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
4	DQF-COSY	2mM ZFY-6T[Y10L]	99.98% D2O.	50mM d11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
5	3D-TOCSY-NOESY	5mM ZFY-6T[Y10L]	90% H2O/10% D2O	50mM d11-Tris-HCl, 5.5mM ZnCl2	6.0	ambient	298
6	2D-ROESY	5mM ZFY-6T[Y10L]	90% H2O/10% D2O	50mM d11-Tris-HCl, 5.5mM ZnCl2	6.0	ambient	298
7	2D-ROESY	5mM ZFY-6T[Y10L]	99.98% D2O.	50mM d11-Tris-HCl, 5.5mM ZnCl2	6.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	VXRS	500
2	Varian	UNITYPLUS	500
3	Varian	INOVA	500

NMR Refinement
Method	Details	Software
Distance geometry/Simulated annealing, followed by restrained molecular dynamics. The stereospecific assignments of the L10 methyl groups were determined by relaxation-matrix NOE backcalculation.	Structures are based on 265 interresidue NOE-derived distance constraints, 27 dihedral angle restraints, and 10 hydrogen bond restraints.	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	30
Representative Model	6 (fewest violations)

Additional NMR Experimental Information

Details

This structure was determined using 2D and 3D homonuclear techniques.Stereospecific assignments for the L18 methyl groups could not be unambiguously determined. However, the resonances were clearly resolved. As a result,the structures were calculated as two families, depending on the assignments used. Structures 1-15 belong to one family, and use the assignments indicated in the accompanying restraint file. Structures 16-30 use the opposite assignments for the L18 methyls.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	4.3, 5.3	Varian, Inc.
2	processing	VNMR	4.3, 5.3	Varian, Inc.
3	data analysis	NHFIT		Redfield, C.
4	structure solution	DGII	standalone	Havel, T.F.
5	refinement	X-PLOR	3.1	Brunger, A.T.