1ZIT

Structure of the receiver domain of NtrC4 from Aquifex aeolicus

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1mM NtrC4r U-15N,13C 10 mM phosphate buffer pH 7.0.	90% H2O/10% D2O	40 mM	7	ambient	323
2	3D_13C-separated_NOESY	1mM NtrC4r U-15N,13C 10 mM phosphate buffer pH 7.0.	90% H2O/10% D2O	40 mM	7	ambient	323
3	HNHA	1mM NtrC4r U-15N,13C 10 mM phosphate buffer pH 7.0.	90% H2O/10% D2O	40 mM	7	ambient	323
4	2D NOESY	1mM NtrC4r U-15N,13C 10 mM phosphate buffer pH 7.0.	90% H2O/10% D2O	40 mM	7	ambient	323
5	15N-IPAP-HSQC	1mM NtrC4r U-15N,13C 10 mM phosphate buffer pH 7.0.	90% H2O/10% D2O	40 mM	7	ambient	323

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	500
3	Bruker	DRX	800

NMR Refinement
Method	Details	Software
simulated annealing	The structures are based on 1155 NOE restraints, 19 hydrogen bonds (38 restraints), 57 Phi dihedral restraints, 11 Chi1 restraints, and 24 1H-15N residual dipolar coupling restraints.	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with favorable non-bond energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	38
Representative Model	11 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CNS	1.1	Brunger
2	processing	NMRPipe	Linux	Delaglio
3	data analysis	NMRView	5.0	Johnson
4	structure solution	DYANA	1.5	Guntert
5	refinement	DYANA	1.5	Guntert