1YBN
Solution structure of the 3'E topology of the i-motif tetramer of d(CCCCAA)
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | pH 4.5 | H2O/D2O | no added salt | 4.5 | normal | 273 | |
2 | 2D TOCSY | pH 4.5 | H2O/D2O | no added salt | 4.5 | normal | 273 | |
3 | HMBC | pH 4.5 | H2O/D2O | no added salt | 4.5 | normal | 273 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 500 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing | 54 NOE-derived distance constraints and 12 distances constraints for H-bonding derived from proton exchange measurements | X-PLOR |
NMR Ensemble Information | |
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Conformer Selection Criteria | back calculated data agree with experimental NOESY spectrum |
Conformers Calculated Total Number | 10 |
Conformers Submitted Total Number | 1 |
Representative Model | 1 (fewest violations) |
Additional NMR Experimental Information | |
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Details | standard 2 D methods |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | structure solution | X-PLOR | Brunger, A.T. | |
2 | refinement | X-PLOR | Brunger, A.T. |