1TXE

Solution structure of the active-centre mutant Ile14Ala of the histidine-containing phosphocarrier protein (HPr) from Staphylococcus carnosus

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.4mM HPrI14A, 20mM potassium phosphate pH 7.14, 100mM KCl	5% D2O, 95% H2O	0.12	7.14	1 atm	298
2	3D_15N-separated_NOESY	1.7mM HPrI14A U-15N, 20mM potassium phosphate pH 7.14, 100mM KCl	5% D2O, 95% H2O	0.12	7.14	1 atm	298
3	3D_13C-separated_NOESY	1.5mM HPrI14A U-15N,13C, 20mM potassium phosphate pH 7.14, 100mM KCl	5% D2O, 95% H2O	0.12	7.14	1 atm	298
4	HSQC	0.9mM HPrI14A U-15N, 20mM potassium phosphate pH 7.14, 100mM KCl, 7.5% DIODPC/CHAPSO (4.3:1)	5% D2O, 95% H2O	0.12	7.14	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	500
2	Bruker	DMX	600
3	Bruker	DMX	800

NMR Refinement
Method	Details	Software
simulated annealing	TOTAL NUMBER OF NOES USED FOR THE CALCULATION: 1268, NUMBER OF INTRA-RESIDUE NOES USED FOR THE CALCULATION: 637, NUMBER OF SHORT RANGE NOES (I,J, I < J < I+5) USED FOR THE CALCULATION: 365, NUMBER OF LONG RANGE (I,J, J > I+4) NOES USED FOR THE CALCULATION: 266, NUMBER OF DIHEDRAL ANGLES RESTRAINTS USED FOR THE CALCULATION: 44, NUMBER OF HYDROGEN BOND RESTRAINTS USED FOR THE CALCULATION: 20, NUMBER OF 1HN/15NH RESIDUAL DIPOLAR COUPLINGS USED FOR THE CALCULATION: 49, NUMBER OF 1HN/1HA RESIDUAL DIPOLAR COUPLINGS USED FOR THE CALCULATION: 25	AUREMOL

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	300
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	Residual dipolar couplings for the amide bond (HN-N) as well as between the atoms HA and HN have also been used as restraints for structure determination.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	AUREMOL	1.0	Gronwald, Neidig, Kalbitzer
2	collection	XwinNMR	2.6	Bruker
3	structure solution	CNS	1.0	Brunger
4	refinement	CNS	1.0

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.