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Solution structure of the complete zinc-finger region of human zinc-fingers and homeoboxes 1 (ZHX1)
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D NOESY
0.3 mM ZHX1-ZNF; 50 mM NaPO4; 150 mM NaCl; 40 uM ZnCl2, 90% H2O, 10% D2O
90% H2O/10% D2O
8.0
ambient
293
2
3D_15N-separated_NOESY
0.3 mM ZHX1-ZNF; 50 mM NaPO4; 150 mM NaCl; 40 uM ZnCl2, 90% H2O, 10% D2O
90% H2O/10% D2O
8.0
ambient
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AVANCE
900
NMR Refinement
Method
Details
Software
Sparky ASSIGNMENT - CYANA structure calculations; run1: use 70% most intense peaks for initial fold, run2: refine initial fold using all peaks - water refinement with CNS
Structures are based on 2034 distance restraints (including for each of the two zinc-fingers 4 C2H2-to-Zinc restraints and 6 C2H2 restraints to arrange their Zn-coordinating atoms in a tetrahedron). In addition 192 dihedral restraints were used (100 from TALOS and 92 from CSI).
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with acceptable covalent geometry,structures with the lowest energy,target function