1XSG
Solution structure of E.coli RNase P RNA P4 stem oligoribonucleotide, U69A mutation
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 2mM P4 U69A RNA; 100mM NaCl; 10mM phosphate buffer pH 6.4; 90% H2O, 10% D2O | 90% H2O/10% D2O | 100mM NaCl | 6.4 | ambient | 288 | |
2 | 2D NOESY | 2mM P4 U69A RNA; 100mM NaCl; 10mM phosphate buffer pH 6.4; 100% D2O | 100% D2O | 100mM NaCl | 6.4 | ambient | 288 | |
3 | DQF-COSY | 2mM P4 U69A RNA; 100mM NaCl; 10mM phosphate buffer pH 6.4; 100% D2O | 100% D2O | 100mM NaCl | 6.4 | ambient | 288 | |
4 | 31P-1H-Hetero-COSY | 2mM P4 U69A RNA; 100mM NaCl; 10mM phosphate buffer pH 6.4; 100% D2O | 100% D2O | 100mM NaCl | 6.4 | ambient | 288 | |
5 | 31P-1H-Hetero-TOCSY-NOESY | 2mM P4 U69A RNA; 100mM NaCl; 10mM phosphate buffer pH 6.4; 100% D2O | 100% D2O | 100mM NaCl | 6.4 | ambient | 288 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DMX | 500 |
NMR Refinement | ||
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Method | Details | Software |
restrained molecular dynamics and simulated annealing | The average structure is based on the superposition of 12 structures after refinement. The average RMS deviation between the ensemble and the average structure is 1.78 Angstrom. A total of 290 NOE-derived distance constraints, 245 dihedral restraints and 48 distance restraints from hydrogen bonds were used in refinement. | XwinNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | |
Conformers Calculated Total Number | |
Conformers Submitted Total Number | 1 |
Representative Model | 1 (minimized average structure) |
Additional NMR Experimental Information | |
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Details | The structure was determined using standard 2D homonuclear techniques as well as 13C and 31P heteronuclear experiments performed at natural abundance |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | XwinNMR | 1.2 | Bruker |
2 | processing | NMRPipe | 2.1 | F. Delaglio |
3 | structure solution | X-PLOR | 3.1 | |
4 | refinement | X-PLOR | 3.1 |