1Z2K

NMR structure of the D1 domain of the Natural Killer Cell Receptor, 2B4

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	0.5mM 2B4 D1 domain, U-15N,13C; 50 mM phosphate buffer; pH 7.2; 90% H2O, 10% D2O	aqueous solution at 298 degrees Kelvin	50 mM sodium phosphate	7.2	ambient	298
2	3D_15N-separated_NOESY	0.5mM 2B4 D1 domain, U-15N,13C; 50 mM phosphate buffer; pH 7.2; 90% H2O, 10% D2O	aqueous solution at 298 degrees Kelvin	50 mM sodium phosphate	7.2	ambient	298
3	2D NOESY	0.5mM 2B4 D1 domain, U-15N,13C; 50 mM phosphate buffer; pH 7.2; 90% H2O, 10% D2O	aqueous solution at 298 degrees Kelvin	50 mM sodium phosphate	7.2	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
distance geometry and simulated annealing	The structures are based on a total of 2657 restraints, 2359 are NOE-derived distance constraints, 128 dihedral angle restraints, 170 distance restraints from hydrogen bonds.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	25
Conformers Submitted Total Number	14
Representative Model	7 (closest to the average)

Additional NMR Experimental Information
Details	The structure was determinded using standard 2D homonuclear NOESY and 3D heteronuclear techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.1	Brunger
2	collection	XwinNMR	2.5	Bruker
3	refinement	X-PLOR	3.1	Brunger