2K7O

Ca2+-S100B, refined with RDCs

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	IPAP	400 uM [U-15N] S100B, 10 mM CaCl2, 25 mM NaCl, 10 mM [U-99% 2H] MES, pH 6.7, 10 mM DTT, .1 mM NaN3	90% H2O/10% D2O	50	6.7	ambient	310
2	HNCOCA	400 uM [U-15N] S100B, 10 mM CaCl2, 25 mM NaCl, 10 mM [U-99% 2H] MES, pH 6.7, 10 mM DTT, .1 mM NaN3	90% H2O/10% D2O	50	6.7	ambient	310

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

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
3	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore