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Structural Basis for Poor Uracil Excision from Hairpin DNA: NMR Study
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D NOESY
2 mM oligo; no buffer; pH = 7.0; 305K; 99% D2O
99% D2O
7.0
1 atm
305
2
E-COSY
2 mM oligo; no buffer; pH = 7.0; 305K; 99% D2O
99% D2O
7.0
1 atm
305
3
2D NOESY
2 mM oligo; no buffer; pH = 7.0; 305K; 90% H2O + 10% D2O
90% H2O/10% D2O
7.0
1 atm
295
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
UNITYPLUS
600
2
Bruker
AMX
500
NMR Refinement
Method
Details
Software
restrained molecular dynamics and energy minimization
The structures are based on total of 227 restraints, 143 are NOE-derived distance constraints, 64 dihedral angle restraints, 10 distance restraints from hydrogen bonds.
VNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number
200
Conformers Submitted Total Number
10
Representative Model
1 (fewest violations,lowest energy)
Additional NMR Experimental Information
Details
This structure was determined using 2D homonuclear techniques