1K09

Solution structure of BetaCore, A Designed Water Soluble Four-Stranded Antiparallel b-sheet Protein

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	288
2	3D_15N-HSQC-NOESY	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	288
3	3D_15N-HSQC-TOCSY	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	288
4	15N-HSQC	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	288
5	15N-HSQC	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	278
6	2D TOCSY	0.4 mM BetaCore selectively-15N; pH3; 90% H2O, 10% D2O	90% H2O/10% D2O		3	ambient	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	800

NMR Refinement
Method	Details	Software
simulated annealing	The structures are based on a total of 195 restraints, 172 are NOE-derived distance constraints, 14 dihedral angle restraints, 9 distance restraints from hydrogen bonds	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	The submitted conformers are those with no constraint violations greater than 0.5 angstroms for NOEs and 5 degrees for dihedrals. They are also the ones with best covalent geometry.
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	8 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.851	Brunger
2	processing	NMRPipe		Delaglio
3	data analysis	NMRView	5.0	Johnson
4	refinement	X-PLOR	3.851	Brunger