1JR5

Solution Structure of the Anti-Sigma Factor AsiA Homodimer

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	1.5 mM AsiA U-13C, 15N; 50 mM d4-acetate, 50 mM KCl; 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM d4-acetate, 50 mM KCl	6.3	ambient	298
2	3D_15N-separated_NOESY	1.5 mM AsiA U-13C, 15N; 50 mM d4-acetate, 50 mM KCl; 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM d4-acetate, 50 mM KCl	6.3	ambient	298
3	HNHA	1.5 mM AsiA U-15N; 50 mM d4-acetate, 50 mM KCl; 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM d4-acetate, 50 mM KCl	6.3	ambient	298
4	3D_13C_F1-filtered_F3-edited_NOESY-HSQC	1.0 mM U-13C, 15N and 1.0 mM unlabeled; 50 mM d4-acetate, 50 mM KCl; 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM d4-acetate, 50 mM KCl	6.3	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	750

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics, torsion angle and cartesian dynamics	2061 total NOE-based distance restraints including 34 hydrogen bond restraints and 36 intermolecular restraints, 153 dihedral angle restraints	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	25
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.1C	Varian Inc.
2	processing	Felix	2000	Molecular Simulations
3	data analysis	Felix	2000	Molecular Simulations
4	structure solution	CNS	1.0	Brunger et al
5	refinement	CNS	1.0	Brunger et al