1XRZ

NMR Structure of a Zinc Finger with Cyclohexanylalanine Substituted for the Central Aromatic Residue

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF-COSY	2mM Zfy-6T[Y10(CHA)], 90% H2O, 10% D2O	90% H2O/10% D2O	50mM D11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
2	DQF-COSY	2mM Zfy-6T[Y10(CHA)]	100% D2O	50mM D11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
3	2D TOCSY	2mM Zfy-6T[Y10(CHA)], 90% H2O, 10% D2O	90% H2O/10% D2O	50mM D11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
4	2D TOCSY	2mM Zfy-6T[Y10(CHA)], 90% H2O, 10% D2O	90% H2O/10% D2O
5	2D NOESY	2mM Zfy-6T[Y10(CHA)], 90% H2O, 10% D2O	90% H2O/10% D2O	50mM D11-Tris-HCl, 2.2mM ZnCl2	6.0	ambient	298
6	2D NOESY	2mM Zfy-6T[Y10(CHA)], 90% H2O, 10% D2O	90% H2O/10% D2O

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

NMR Refinement
Method	Details	Software
Distance geometry/simulated annealing followed by restrained molecular dynamics		VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	34
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques. Hydrogen assignments for the cyclohexanyl ring were made by extension from the normal methods.

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