1KRX

SOLUTION STRUCTURE OF BERYLLOFLUORIDE-ACTIVATED NTRC RECEIVER DOMAIN: MODEL STRUCTURES INCORPORATING ACTIVE SITE CONTACTS

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	U-15N, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
2	4D_13C/15N-separated_NOESY	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
3	4D_13C-separated_NOESY	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
4	3D_13C-separated_NOESY	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
5	HNCA-J	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
6	CBCA(CO)NH	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
7	13C,1H-HSQC	10% 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
8	IPAP-HSQC	U-15N, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O, 30mg/ml phage pf1	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303
9	HNHA	U-15N, 13C, 1.1-1.5mM NtrC receiver domain(1-124), 50mM sodium phosphate buffer(pH6.75), 50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF	6.75	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	600
2	Bruker	DRX	500

NMR Refinement
Method	Details	Software
distance geometry, torsion angle dynamics, simulated annealing	3 additional constraints from crystal structure of BeF3-activated CheY were used for structure calculation.	DYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	26
Representative Model	19 (n/a)

Additional NMR Experimental Information
Details	Coordinates for the 26 structures of the model derived from NMR constraints and 3 active site arrangement constraints inferred from similarity to CheY

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	DYANA	1.5	Guntert
2	structure solution	CNS 1.0		Brunger
3	processing	Felix
4	data analysis	NMRView		Johnson
5	refinement	CNS 1.0		Brunger et. al.
6	refinement	MOLMOL

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.