1J56

MINIMIZED AVERAGE STRUCTURE OF BERYLLOFLUORIDE-ACTIVATED NTRC RECEIVER DOMAIN: MODEL STRUCTURE 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, ENERGY MINIMIZATION	3 additional constraints from crystal structure of BeF3-activated CheY were used for structure calculation.	DYANA

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	1
Representative Model	(minimized average structure)

Additional NMR Experimental Information
Details	MINIMIZED AVERAGE STRUCTURE OF BERYLLOFLUORIDE-ACTIVATED NTRC RECEIVER DOMAIN: MODEL STRUCTURE INCORPORATING ACTIVE 3 SITE CONTACTS.

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 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 R01GM157729.