1P6R

Solution structure of the DNA binding domain of the repressor BlaI.

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	U-15N 0.75 mM, phosphate buffer 75 mM pH 7.6, 300 mM KCl 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM KCl, 75 mM phosphate sodium	7.6	ambient	298
2	3D_13C-separated_NOESY	U-15N-13C 0.50 mM, phosphate buffer 75 mM pH 7.6, 300 mM KCl 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM KCl, 75 mM phosphate sodium	7.6	ambient	298
3	3D_15N-separated_NOESY	U-15N 0.75 mM, phosphate buffer 75 mM pH 7.6, 300 mM KCl 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM KCl, 75 mM phosphate sodium	7.6	ambient	298
4	3D-13C-separated NOESY optimized for CH groups	U-15N-13C 0.50 mM, phosphate buffer 75 mM pH 7.6, 300 mM KCl 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM KCl, 75 mM phosphate sodium	7.6	ambient	298
5	4D 13C-separated-HSQC-NOESY-HSQC	U-15N-13C 0.50 mM, phosphate buffer 75 mM pH 7.6, 300 mM KCl 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM KCl, 75 mM phosphate sodium	7.6	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800
2	Varian	INOVA	600

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics	For structure calculation, a total of 1252 interproton and 110 dihedral restraints were used. The distance constraints contain 596 intraresidue, 205 sequential, 87 medium-range, 145 long-range, and 219 ambiguous correlations.	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	80
Conformers Submitted Total Number	19
Representative Model	19 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	2000	Accelrys
2	structure solution	Discover	2000	Accelrys
3	refinement	Amber	1991	Pearlman
4	data analysis	TALOS	1999	Cornilescu