1EVM
NMR OBSERVATION OF A-TETRAD
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 2mM potassium phosphate, 0.2 mM EDTA, 2-100 mM KCl, pH 7.3 | 90% H2O and 10% D2O | 7.3 | 1 atm | |||
2 | 2D NOESY | 2mM potassium phosphate, 0.2 mM EDTA, 2-100 mM KCl, pH 7.3 | D2O | |||||
3 | 2D TOCSY | 2mM potassium phosphate, 0.2 mM EDTA, 2-100 mM KCl, pH 7.3 | D2O | |||||
4 | E-COSY | 2mM potassium phosphate, 0.2 mM EDTA, 2-100 mM KCl, pH 7.3 | D2O |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | UNITYPLUS | 600 |
2 | Bruker | AMX | 500 |
NMR Refinement | ||
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Method | Details | Software |
Restrained energy minimizatiom, simulated annealing-restrained molecular dynamics, Iterative relaxation matrix refinement | VNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with acceptable covalent geometry |
Conformers Calculated Total Number | 8 |
Conformers Submitted Total Number | 8 |
Representative Model | 1 (closest to the average) |
Additional NMR Experimental Information | |
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Details | temperature dependance 1D, pH dependance 1D and salt dependance 1D. Temperature varied from 0 to 70 C |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | VNMR | 6.1 | Varian |
2 | data analysis | Felix | 230 and 97 | BIOSYM |
3 | collection | XwinNMR | 1.3 | Bruker |
4 | structure solution | Discover | 3.1 | BIOSYM |
5 | iterative matrix relaxation | IRMA | 2.3 | BIOSYM |
6 | refinement | Discover | 3.1 | BIOSYM |