1P6Q

NMR Structure of the Response regulator CheY2 from Sinorhizobium meliloti, complexed with Mg++

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
2	3D_13C-separated_NOESY	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
3	3D_15N-separated_NOESY	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
7	HNCA	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
8	HNCO	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
9	HN(CO)CA	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
10	CBCA(CO)CA	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
11	HBHA(CO)NH	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
12	HCCH-TOCSY	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298
13	CC(CO)NH	1mM CheY2, 1MM TRIS-HCL, 5MM MGCL2	5mM MgCl2, 20mM Tris/HCl		6.83	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	800

NMR Refinement
Method	Details	Software
torsion angle dynamics		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	250
Conformers Submitted Total Number	16
Representative Model	1 (lowest energy)

Additional NMR Experimental Information

Details

TOTAL NUMBER OF NOES USED FOR THE CALCULATION: 1598, NUMBER OF INTRA-RESIDUE NOES USED FOR THE CALCULATION: 796, NUMBER OF SEQUENTIAL NOES USED FOR THE CALCULATION: 437, NUMBER OF MEDIUM RANGE NOES USED FOR THE CALCULATION: 179, NUMBER OF LONG RANGE (I,J, J > I+4) NOES USED FOR THE CALCULATION: 186, NUMBER OF DIHEDRAL ANGLES RESTRAINTS USED FOR THE CALCULATION: 52, NUMBER OF HYDROGEN BOND RESTRAINTS USED FOR THE CALCULATION: 5, MINIMAL TARGET FUNCTION WAS 2.80, MEAN TARGET FUNCTION OF 16 STRUCTURES WAS 3.00 (+-0.4), THE NUMBER OF NOE VIOLATIONS > 0.02 NM WAS 3 (+-1), THE NUMBER OF NOE VIOLATIONS > 0.03 NM WAS 0, THE NUMBER OF DIHEDRAL ANGLES VIOLATIONS > 10 DEGREES WAS 0, RMSDS BACK BONE (6-124): 0.042 (+-0.015) NM, RMSDS ALL HEAVY ATOMS (6-124): 0.098 (+-0.016)NM

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	XwinNMR	2.5	Bruker
2	data analysis	AURELIA	2.7.9	Bruker
3	structure solution	DYANA	1.5	Guentert
4	refinement	DYANA	1.5	Guentert