2MM2

Solution Structures of Active Ptr ToxB and its inactive Homolog highlight Protein Dynamics as a Modulator of Toxin activity.

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
2	2D 1H-13C HSQC	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
3	3D CBCA(CO)NH	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
4	3D HBHA(CO)NH	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
5	3D H(CCO)NH	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
6	3D C(CO)NH	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
7	3D HCCH-TOCSY	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
8	3D HNCO	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
9	3D HNCACB	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
10	3D 1H-15N NOESY	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303
11	3D 1H-13C NOESY	10 % D2O, 10 mM sodium phosphate	90% H2O/10% D2O	10	6.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	700

NMR Refinement
Method	Details	Software
simulated annealing		CYANA

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA	3.0	Guntert, Mumenthaler and Wuthrich
2	refinement	CYANA	3.0	Guntert, Mumenthaler and Wuthrich