1OVY

Solution Structure of Ribosomal Protein L18 from Bacillus stearothermophilus

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1mM L18; 20mM phosphate buffer; 200mM NaCl; 5mM MgCl2	90% H2O/10% D2O	12mM KH2PO4; 8mM NaH2PO4; 200mM NaCl, 5mM MgCl2	6.0	1 atm	298
2	3D_15N-separated_NOESY	1.5mM L18 U-15N; 20mM phosphate buffer; 200mM NaCl; 5mM MgCl2	90% H2O/10% D2O	12mM KH2PO4; 8mM NaH2PO4; 200mM NaCl, 5mM MgCl2	6.0	1 atm	298
3	3D_13C-separated_NOESY	1.5mM L18 U-15N,13C; 20mM phosphate buffer; 200mM NaCl; 5mM MgCl2	90% H2O/10% D2O	12mM KH2PO4; 8mM NaH2PO4; 200mM NaCl, 5mM MgCl2	6.0	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITY	600

NMR Refinement
Method	Details	Software
Aria was used to select and assign peak lists from NOESY experiments. CNS as modified for use with ARIA was used for structure calculation using torsion angle simulated annealing.	The structures are based on a total of 2272 restraints. 1188 are unambiguous distance constraints, 913 are ambiguous distance constraints, 128 are dihedral angle restraints, and 43 are hydrogen bond restraints.	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	150
Conformers Submitted Total Number	10
Representative Model	1 (closest to the average)

Additional NMR Experimental Information
Details	This structure was determined using triple resonance NMR spectroscopy.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	97.0	Biosym/MSI
2	data analysis	Sparky	3.93	Goddard, T.D. & Kneller, D.G.
3	structure solution	CNS	1.0	Brunger, A.T. et al.
4	structure solution	ARIA	1.2	Linge, J.P. & Nilges, M.
5	refinement	CNS	1.0	Brunger, A.T. et al.
6	refinement	ARIA	1.2	Linge, J.P. & Nilges, M.