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Solution NMR Structure of Protein yggU from Escherichia coli. Northeast Structural Genomics Consortium Target ER14.
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
3D 15N-NOESY
1.0 mM ER14 U-15N,13C in
20mM MES, 50mM NaCl, 5mM DTT, pH 6.5
95% H2O/5% D2O
50 mM NaCl
6.5
ambient
293
2
3D 13C-NOESY
1.0 mM ER14 U-15N,13C in
20mM MES, 50mM NaCl, 5mM DTT, pH 6.5
95% H2O/5% D2O
50 mM NaCl
6.5
ambient
293
3
3D aromatic 13C-NOESY
1.0 mM ER14 U-15N,13C in
20mM MES, 50mM NaCl, 5mM DTT, pH 6.5
95% H2O/5% D2O
50 mM NaCl
6.5
ambient
293
4
2D 15N,1H HSQC-J
1.0 mM ER14 U-15N,13C in
20mM MES, 50mM NaCl, 5mM DTT, pH 6.5
95% H2O/5% D2O
50 mM NaCl
6.5
ambient
293
5
2D 15N,1H MEXICO
1.0 mM ER14 U-15N,13C in
20mM MES, 50mM NaCl, 5mM DTT, pH 6.5
95% H2O/5% D2O
50 mM NaCl
6.5
ambient
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
INOVA
500
2
Varian
INOVA
600
3
Varian
INOVA
750
NMR Refinement
Method
Details
Software
torsion angle dynamics
simulated annealing
The structures are based on a total of 1419
conformationally-restricting NOE-derived distance
restraints, 210 dihedral angle restraints, and 78
hydrogen bond restraints. Initial structure
determination was performed by torsion angle dynamics
(DYANA). The final structures submitted were refined
by simulated annealing (XPLOR).
VNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
100
Conformers Submitted Total Number
10
Representative Model
1 (lowest energy)
Additional NMR Experimental Information
Details
The structure was determined using
triple-resonance NMR spectroscopy. Automatic backbone
resonance assignments were made using AUTOASSIGN.
Automatic NOESY assignments as well as distance and
hydrogen bond restraints were determined using the
AUTOSTRUCTURE program. Dihedral angle restraints were
determined using HYPER and TALOS.
Backbone conformations for residues 1-5, 25-26, 66,
101-108 are not well-defined [S(phi) + S(psi) < 1.8]
in this solution NMR structure.