2MH3

NMR structure of the basic helix-loop-helix region of the transcriptional repressor HES-1

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	triple resonance assignment	2 mM [U-99% 13C; U-99% 15N] protein, 50 mM potassium phosphate	90% H2O/10% D2O	50	6.5	ambient	288
2	relaxation	2 mM [U-99% 13C; U-99% 15N] protein, 50 mM potassium phosphate	90% H2O/10% D2O	50	6.5	ambient	288
3	DNA titration	2 mM [U-99% 13C; U-99% 15N] protein, 50 mM potassium phosphate	90% H2O/10% D2O	50	6.5	ambient	288
4	NOESY	2 mM [U-99% 13C; U-99% 15N] protein, 50 mM potassium phosphate	90% H2O/10% D2O	50	6.5	ambient	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
restrained molecular dynamics		CCPN_ANALYSIS

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	chemical shift assignment	CCPN_ANALYSIS		CCPN
2	data analysis	CS-ROSETTA		Shen, Vernon, Baker and Bax
3	data analysis	TALOS+		Cornilescu, Delaglio and Bax
4	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
5	data analysis	CING		Vuister et al.
6	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax