1Z9B

Solution structure of the C1-subdomain of Bacillus stearothermophilus translation initiation factor IF2

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.5 mM Bst IF2-C1 U-15N & U-13C; 20 mM KPi; 200 mM KCl, protease inhibitor mix, NaN3	95% H2O/5% D2O	200 mM KCl	6.4	ambient	307.4
2	3D_15N-separated_NOESY	0.5 mM Bst IF2-C1 U-15N & U-13C; 20 mM KPi; 200 mM KCl, protease inhibitor mix, NaN3	95% H2O/5% D2O	200 mM KCl	6.4	ambient	307.4
3	3D_13C-separated_NOESY	0.5 mM Bst IF2-C1 U-15N & U-13C; 20 mM KPi; 200 mM KCl, protease inhibitor mix, NaN3	95% H2O/5% D2O	200 mM KCl	6.4	ambient	307.4
4	HNHA	0.5 mM Bst IF2-C1 U-15N & U-13C; 20 mM KPi; 200 mM KCl, protease inhibitor mix, NaN3	95% H2O/5% D2O	200 mM KCl	6.4	ambient	307.4

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700
2	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
intial fold determination with CNS in ARIA followed by iterative automatic assignment and simulated annealing in CYANA2.0, followed by a round of annealing in ARIA and final water refinement using CNS procedure re_h2o.inp	TALOS and CSI used for dihedrals	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5	BRUKER
2	processing	NMRPipe	linux	Delaglio et al
3	data analysis	NMRView	5.3	Johnson and Blevins
4	refinement	CNS	1.1	Brunger et al
5	structure solution	CYANA	2.0	Guentert
6	data analysis	TALOS