1PSB

Solution structure of calcium loaded S100B complexed to a peptide from N-Terminal regulatory domain of NDR kinase.

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1 mM 1H,15N labeled protein 1 mM unlabeled peptide 20 mM d-11 tris and 10mM d10-DTT 5 mM CaCl2 and 30mM KCL	90% H2O/10% D2O	0.045 M/L	7.5	ambient	310
2	3D_13C-separated_NOESY	1 mM 1H,13C,15N labeled protein 1 mM unlabeled peptide 20 mM d-11 tris and 10mM d10-DTT 5 mM CaCl2 and 30mM KCL	90% H2O/10% D2O	0.045 M/L	7.5	ambient	310
3	3D_13C-separated_NOESY	1 mM 1H,13C,15N labeled protein 1 mM unlabeled peptide 20 mM d-11 tris and 10mM d10-DTT 5 mM CaCl2 and 30mM KCL	100% D2O	0.045 M/L	7.5	ambient	310
4	2D_15N/13C_F2-Filtered_NOESY	1 mM 1H,13C,15N labeled protein 1 mM unlabeled peptide 20 mM d-11 tris and 10mM d10-DTT 5 mM CaCl2 and 30mM KCL	90% H2O/10% D2O	0.045 M/L	7.5	ambient	310
5	3D_13C-F1_separated_13C/15N-F2_Filtered_HMQC-NOESY	1 mM 1H,13C,15N labeled protein 1 mM unlabeled peptide 20 mM d-11 tris and 10mM d10-DTT 5 mM CaCl2 and 30mM KCL	90% H2O/10% D2O	0.045 M/L	7.5	ambient	310

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
Torsion Angle Dynamics, Restrained Molecular Dynamics, Simulated Annealing,	The structures are based on a total of 3274 restraints, 2964 are NOE-derived distance constraints and 310 dihedral angle restraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	128
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Additional NMR Experimental Information
Details	Protein Backbone/Side-Chain Assignments were made from 3D CBCA(CO)NH, 3D HNCA, 3D HN(CO)CA, 3D HNCO 3D HCCH-TOCSY, 3D HCCH-COSY experiments. Peptide was assigned from 2D-Filtered COSY/TOCSY Experiments.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.0	Bruker
2	processing	Felix	2000	Accelrys
3	data analysis	Felix	2000	Accelrys
4	structure solution	DYANA	1.5	Guentert
5	refinement	Amber	7.0	Pearlman, Case, Caldwell, Seibel, Chandra Singh, Weiner, Kollman

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.