1JOQ

Ensemble structures for Staphylococcal nuclease-H124L in ternary complex with Ca2+ and thymidine-3',5'-bisphosphate

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	E-COSY	3.5-5 mM Nuclease-H124L U-50% 2H; 300 mM KCl; D2O	D2O	300 nM KCl	5.5	ambient	318
2	MHQC-J	3.5-5 mM Nuclease-H124L U-95% 15N; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
3	DQF-COSY	3.5-5 mM Nuclease-H124L; 300 mM KCl; D2O	D2O	300 nM KCl	5.5	ambient	318
4	2D NOESY	3.5-5 mM Nuclease-H124L U-50% 2H; 300 mM KCl; D2O	D2O	300 nM KCl	5.5	ambient	318
5	2D NOESY	3.5-5 mM Nuclease-H124L U-50% 2H; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
6	3D 1H-15N NOESY-HMQC	3.5-5 mM Nuclease-H124L U-95% 15N; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
7	3D HMQC-NOESY-HMQC	3.5-5 mM Nuclease-H124L U-95% 15N; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
8	2D 1H-13C HMQC	3.5-5 mM Nuclease-H124L U-98% 13C; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
9	HNCO	3.5-5 mM Nuclease-H124L U-98% 13C U-99% 15N; 300 mM KCl; H2O	H2O	300 nM KCl	5.1	ambient	318
10	and others	3.5-5 mM Nuclease-H124L U-50% 2H; 300 mM KCl; D2O	D2O	300 nM KCl	5.5	ambient	318

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AM	500
2		AM	600

NMR Refinement
Method	Details	Software
Distance, hydrogen bond and torsion angle constraints	2261 constraints were used to calculate the structure. CA2+ is bound, but coordinates for the calcium are not provided.	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry,structures with the least restraint violations
Conformers Calculated Total Number	90
Conformers Submitted Total Number	30

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix		Biosym Technologies Inc
2	structure solution	X-PLOR	3.1	Brunger
3	structure solution	Insight II	2.3	Biosym Technologies Inc
4	structure solution	HBPLUS		McDonald and Thornton
5	refinement	X-PLOR	3.1	Brunger