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Solution Structure of a Human C2H2-type Zinc Finger Protein
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
3D_13C-separated_NOESY
0.6 mM ZNF593 U-15N,13C, 10 mM Bis Tris, 100 mM NaCl, 2 mM DTT, 90% H2O, 10% D2O
90% H2O/10% D2O
100 mM
6.0
ambient
298
2
3D_15N-separated_NOESY
0.6 mM ZNF593 U-15N,13C, 10 mM Bis Tris, 100 mM NaCl, 2 mM DTT, 90% H2O, 10% D2O
90% H2O/10% D2O
100 mM
6.0
ambient
298
3
3D 13C-separated NOESY (AROMATIC)
0.6 mM ZNF593 U-15N,13C, 10 mM Bis Tris, 100 mM NaCl, 2 mM DTT, 90% H2O, 10% D2O
90% H2O/10% D2O
100 mM
6.0
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AVANCE
600
NMR Refinement
Method
Details
Software
Automated methods were used for backbone chemical shift assignment and iterative NOE refinement. Final structures were obtained by molecular dynamics in explicit solvent.
Residues 1-27 and 95-116 of the construct were disordered and were excluded from the model. After initial calculations without zinc, the zinc atom was constrained in a tetrahedral geometry using distance restraints to each coordinating CYS SG and HIS NE2 of 2.3 A and 2.0 A, respectively.
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
target function
Conformers Calculated Total Number
100
Conformers Submitted Total Number
20
Representative Model
1 (closest to the average)
Additional NMR Experimental Information
Details
All triple-resonance and NOESY spectra were acquired using a cyrogenic probe