5JTM

The structure of chaperone SecB in complex with unstructured PhoA binding site a

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	300 uM [U-100% 13C; U-100% 15N] SecB, 300 uM [U-100% 13C; U-100% 15N] PhoA binding site a, 150 uM potassium chloride, 50 uM sodium phosphate, 50 uM potassium phosphate	90% H2O/10% D2O	150 mM	7	1 atm	301	Bruker AVANCE III 700
2	2D 1H-13C HSQC aliphatic	300 uM [U-100% 13C; U-100% 15N] SecB, 300 uM [U-100% 13C; U-100% 15N] PhoA binding site a, 150 uM potassium chloride, 50 uM sodium phosphate, 50 uM potassium phosphate	90% H2O/10% D2O	150 mM	7	1 atm	301	Bruker AVANCE III 700
3	2D 1H-13C HSQC aromatic	300 uM [U-100% 13C; U-100% 15N] SecB, 300 uM [U-100% 13C; U-100% 15N] PhoA binding site a, 150 uM potassium chloride, 50 uM sodium phosphate, 50 uM potassium phosphate	90% H2O/10% D2O	150 mM	7	1 atm	301	Bruker AVANCE III 700
4	3D 1H-13C NOESY aliphatic	300 uM [U-100% 13C; U-100% 15N] SecB, 300 uM [U-100% 13C; U-100% 15N] PhoA binding site a, 150 uM potassium chloride, 50 uM sodium phosphate, 50 uM potassium phosphate	90% H2O/10% D2O	150 mM	7	1 atm	301	Varian INOVA 900
5	3D 1H-13C NOESY aromatic	300 uM [U-100% 13C; U-100% 15N] SecB, 300 uM [U-100% 13C; U-100% 15N] PhoA binding site a, 150 uM potassium chloride, 50 uM sodium phosphate, 50 uM potassium phosphate	90% H2O/10% D2O	150 mM	7	1 atm	301	Varian INOVA 900

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	700
2	Varian	INOVA	900

NMR Refinement
Method	Details	Software
molecular dynamics		CNS

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	NMRView		Johnson, One Moon Scientific
4	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax