1EO1

Solution structure of hypothetical protein MTH1175 from Methanobacterium thermoautotrophicum

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	4D_13C-separated_NOESY	2 mM MTH1175 U-15N; 25 mM phosphate buffer, pH* 6.1, 150 mM NaCl	99% D2O	150 mM salt, 25 mM phosphate buffer	6.5	ambient	298
2	3D_15N-separated_NOESY	2 mM MTH1175 U-15N; 25 mM phosphate buffer, pH 6.5, 150 mM NaCl, 90% H2O, 10% D2O	90% H2O/10% D2O	150 mM salt, 25 mM phosphate buffer	6.5	ambient	298
3	HNHA	2 mM MTH1175 U-15N; 25 mM phosphate buffer, pH 6.5, 150 mM NaCl, 90% H2O, 10% D2O	90% H2O/10% D2O	150 mM salt, 25 mM phosphate buffer	6.5	ambient	298
4	3D_13C,15N-simultaneous NOESY	2 mM MTH1175 U-15N,13C; 25 mM phosphate buffer, pH 6.5, 150 mM NaCl, 90% H2O, 10% D2O	90% H2O/10% D2O	150 mM salt, 25 mM phosphate buffer	6.5	ambient	298
5	1H-15N HSQC D2O exchange	150 mM salt, 25 mM phosphate buffer	6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800
2	Varian	INOVA	750
3	Varian	INOVA	600
4	Varian	UNITYPLUS	500

NMR Refinement
Method	Details	Software
distance geometry and simulated annealing	436 NOE-derived distance constraints, 40 dihedral angle constraints (phi), 58 hydrogen bonds (2 constraints per H-bond)	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	10 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.1	Brunger
2	processing	Felix	98	MSI
3	collection	VNMR		Varian
4	structure solution	X-PLOR	3.1