1JKN

Solution Structure of the Nudix Enzyme Diadenosine Tetraphosphate Hydrolase from Lupinus angustifolius Complexed with ATP

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNHA	1.6 mM U-15N, U-13C Ap4A hydrolase 1.6 mM ATP 20 mM U-100% 2H imidazole 32 mM NaF 20 mM MgCl2	90% H2O/10% D2O	120 mM	6.5	ambient	298
2	3D_15N-separated_NOESY	1.6 mM U-15N, U-13C Ap4A hydrolase 1.6 mM ATP 20 mM U-100% 2H imidazole 32 mM NaF 20 mM MgCl2	90% H2O/10% D2O	120 mM	6.5	ambient	298
3	3D_13C-separated_NOESY	1.6 mM U-15N, U-13C Ap4A hydrolase 1.6 mM ATP 20 mM U-100% 2H imidazole 32 mM NaF 20 mM MgCl2	100% D2O	120 mM	6.5	ambient	298
4	2D_doubly-tuned_13C_15N-filtered_NOESY	1.6 mM U-15N, U-13C Ap4A hydrolase 1.6 mM ATP 20 mM U-100% 2H imidazole 32 mM NaF 20 mM MgCl2	100% D2O	120 mM	6.5	ambient	298
5	13C-edited_13C-filtered_NOESY-HSQC	1.6 mM U-15N, U-13C Ap4A hydrolase 1.6 mM ATP 20 mM U-100% 2H imidazole 32 mM NaF 20 mM MgCl2	100% D2O	120 mM	6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing	The structures are based on a total of 2948 restraints. 2649 are NOE-based distance restraints, 299 are dihedral angle restraints.	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with favorable non-bond energy, structures with the least restraint violations, target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	30
Representative Model	21 (lowest energy)

Additional NMR Experimental Information
Details	Determined using standard heteronuclear techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.2	Varian
2	processing	NMRPipe	1.1	Delaglio, et al.
3	data analysis	XEASY	1.4	Bartels, et al.
4	refinement	DYANA	1.5	Guentert, et al.
5	refinement	CNS	1.0	Brunger et al.