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Atomic structure of translation initiation factor aIF2 beta-subunit from Archaebacteria sulfolobus solfataricus: high resolution NMR in solution
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D TOCSY
concentration 10 mg/ml, 20 mM NaCl
10% D2O in H2O
0.2 M
8
1 atm
298
2
2D NOESY
concentration 10 mg/ml, 20 mM NaCl
10% D2O in H2O
0.2 M
8
1 atm
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AMX
500
NMR Refinement
Method
Details
Software
the structures were obtained by torsion angle dynamic calculation and energy minimization.
The structure were obtained using 635 non redundant NOE-derived distance restraints and were minimised with 1000 steps of conjugated gradient and 1000 of steepest discent. For the first six residues no signals were observed.
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
20
Conformers Submitted Total Number
10
Representative Model
1 (lowest energy)
Additional NMR Experimental Information
Details
The TOCSY spectra were performed with a mixing time of 80 ms. NOESY spectra were acquired with mixing time of 200 and 300 ms. For all spectra watergate was used as scheme for solvent suppression. For the first six residues no signals were observed.