1FYB
SOLUTION STRUCTURE OF C1-T1, A TWO-DOMAIN PROTEINASE INHIBITOR DERIVED FROM THE CIRCULAR PRECURSOR PROTEIN NA-PROPI FROM NICOTIANA ALATA
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 1mM C1-T1, unlabeled | 90% H2O/10% D2O | 0 | 5.8 | 1 atm | 313 | |
2 | 2D NOESY | 1mM C1-T1, unlabeled | 99% D2O | 0 | 5.8 | 1 atm | 313 | |
3 | 3D_15N-separated_NOESY | 1mM C1-T1, U-15N,13C | 90% H2O/10% D2O | 0 | 5.8 | 1 atm | 313 | |
4 | DQF-COSY | 1mM C1-T1, unlabeled | 90% H2O/10% D2O | 0 | 5.8 | 1 atm | 313 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DMX | 750 |
2 | Bruker | ARX | 500 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing with torsion angle dynamics | the structures are based on a total of 1193 constraints, 1039 are NOE-derived distance constraints, 82 dihedral angle restraints, and 72 hydrogen bond distance constraints | XwinNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 100 |
Conformers Submitted Total Number | 20 |
Representative Model | 4 (best secondary structure) |
Additional NMR Experimental Information | |
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Details | This structure was determined using standard 2D homonuclear techniques and 3D heteronuclear techniques. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | XwinNMR | 2.6 | Bruker |
2 | processing | XwinNMR | 2.6 | Bruker |
3 | data analysis | XEASY | 1.3.7 | Bartels, Xia, Billeter, Guentert, Wuethrich |
4 | structure solution | DYANA | 1.5 | Guentert |
5 | structure solution | X-PLOR | 3.851 | Brunger |
6 | refinement | X-PLOR | 3.851 | Brunger |