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A K+ CATION-INDUCED CONFORMATIONAL SWITCH WITHIN A LOOP SPANNING SEGMENT OF A DNA QUADRUPLEX CONTAINING G-G-G-C REPEATS, NMR, 8 STRUCTURES
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
NOESY
5 MM NACL, 0.2 MM NA2HPO4
6.5
1 atm
293
2
TOCSY
5 MM NACL, 0.2 MM NA2HPO4
6.5
1 atm
293
3
COSY
5 MM NACL, 0.2 MM NA2HPO4
6.5
1 atm
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
UNITY INOVA
600
NMR Refinement
Method
Details
Software
distance geometry
REFINEMENT DETAILS CAN BE FOUND IN THE JRNL CITATION ABOVE
X-PLOR
NMR Ensemble Information
Conformer Selection Criteria
ACCEPTABLE COVALENT ENERGY, LOW DISTANCE RESTRAINT VIOLATIONS, FAVORABLE NON-BONDED ENERGY
Conformers Calculated Total Number
100
Conformers Submitted Total Number
8
Additional NMR Experimental Information
Details
STRUCTURE DETERMINED BY USING 5 NOESY MIXING TIME EXPERIMENTS IN D2O (50, 100, 150, 200 AND 300 MS) AND 2 NOESY MIXING TIME EXPERIMENTS IN H2O (80 AND 250 MS)