2HV4

NMR solution structure refinement of yeast iso-1-ferrocytochrome c

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2-3 mM cytochrome c, 50 mM phosphate buffer, pH 7.0, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM phosphate buffer	7	ambient	303
2	2D TOCSY	2-3 mM cytochrome c, 50 mM phosphate buffer, pH 7.0, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM phosphate buffer	7	ambient	303
3	3D_15N-separated_NOESY	2-3 mM cytochrome c U-15N, 50 mM phosphate buffer, pH 7.0, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM phosphate buffer	7	ambient	303
4	HNHA	2-3 mM cytochrome c U-15N, 50 mM phosphate buffer, pH 7.0, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM phosphate buffer	7	ambient	303
5	3D_13C-separated_NOESY	2-3 mM cytochrome c U-15N,13C, 50 mM phosphate buffer, pH 7.0, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM phosphate buffer	7	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700
2	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing in torsion angle space followed by restrained energy minimization		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	500
Conformers Submitted Total Number	35
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	The present structure is a refinement of 1YFC obtained through heteronuclear nmr experiments at higher magnetic field, and additional structural constraints. Resonances assignment was based on HNCA, HN(CO)CA, (H)CCH-TOCSY, H(C)CH-TOCSY, CBCA(CO)NH, and CCC(CO)NH experiments

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	XwinNMR	3.1	Bruker
2	structure solution	DYANA	1.5	Guentert
3	refinement	Amber	8.0