SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample ContentsU-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
Solvent95% H2O, 5% D2O
Ionic Strength50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF
pH6.75
Pressureambient
Temperature (K)303
Experiment(s):3D_15N-separated_NOESY
Sample ContentsU-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
Solvent95% H2O, 5% D2O
Ionic Strength50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF
pH6.75
Pressureambient
Temperature (K)303
Experiment(s):4D_13C/15N-separated_NOESY, 4D_13C-separated_NOESY, 3D_13C-separated_NOESY, HNCA-J, CBCA(CO)NH, HNHA
Sample Contents10% 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
Solvent95% H2O, 5% D2O
Ionic Strength50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF
pH6.75
Pressureambient
Temperature (K)303
Experiment(s):13C,1H-HSQC
Sample ContentsU-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
Solvent95% H2O, 5% D2O
Ionic Strength50mM NaCl, 4.4mM BeCl2, 7.2mM MgCl2, 29mM NaF
pH6.75
Pressureambient
Temperature (K)303
Experiment(s):IPAP-HSQC
Spectrometer Information
Manufacturer Model Field Strength
Bruker DRX 500.0
Bruker AMX 600.0
NMR Refinement
Method distance geometry, torsion angle dynamics, simulated annealing
Details 3 additional constraints from crystal structure of BeF3-activated CheY were used for structure calculation.
NMR Ensemble Information
Conformer Selection Criteria STRUCTURES WITH THE LOWEST ENERGY
Conformers Calculated Total Number 100
Conformers Submitted Total Number 26
Representative Model Choice Rationale
1 n/a
Additional NMR Experimental Information
1 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 Software Name Author
1 refinement MOLMOL n/a
2 refinement CNS 1.0 Brunger et. al.
3 data analysis NMRVIEW Johnson
4 processing FELIX n/a
5 structure solution CNS 1.0 Brunger
6 structure solution DYANA 1.5 Guntert