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Solution Structure of the Unmodified Anticodon Stem-loop from E. coli tRNA(Phe)
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
3D_15N-separated_NOESY
2mM ACSL-Phe, 15N, 13C
10 mM Potassium Phosphate, 10mM NaCl, 0.02mM EDTA.
90% H2O-10% D2O or 100% D2O.
10 mM KPi, 10mM NaCl
6.8
1 atm
298
2
3D_13C-separated_NOESY
2mM ACSL-Phe, 15N, 13C
10 mM Potassium Phosphate, 10mM NaCl, 0.02mM EDTA.
90% H2O-10% D2O or 100% D2O.
10 mM KPi, 10mM NaCl
6.8
1 atm
298
3
DQF-COSY
2mM ACSL-Phe, 15N, 13C
10 mM Potassium Phosphate, 10mM NaCl, 0.02mM EDTA.
90% H2O-10% D2O or 100% D2O.
10 mM KPi, 10mM NaCl
6.8
1 atm
298
4
HNN-COSY
2mM ACSL-Phe, 15N, 13C
10 mM Potassium Phosphate, 10mM NaCl, 0.02mM EDTA.
90% H2O-10% D2O or 100% D2O.
10 mM KPi, 10mM NaCl
6.8
1 atm
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AMX
500
NMR Refinement
Method
Details
Software
simulated annealing
294 NOE distance constraints,
36 base pair constraints,
70 torsion angle constraints.
Global fold without torsion angle constraints. Refinement with torsion angle constraints.
X-PLOR
NMR Ensemble Information
Conformer Selection Criteria
structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number
60
Conformers Submitted Total Number
8
Representative Model
1 (n/a)
Additional NMR Experimental Information
Details
The structure was determined using 1H, 13C, 15N and 31P heteronuclear NMR spectroscopy.