1M2F
Solution structure of the N-terminal domain of Synechococcus elongatus KaiA (KaiA135N); Family of 25 structures
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | HNHA | 3mM KaiA135N U-15N; 50mM sodium chloride; 20mM phosphate buffer | 95% H2O/5% D2O | 0.17 | 7.0 | ambient | 298 | |
2 | 4D_13C/15N-separated_NOESY | 3mM KaiA135N U-15N,13C; 50mM sodium chloride; 20mM phosphate buffer | 95% H2O/5% D2O | 0.17 | 7.0 | ambient | 298 | |
3 | 4D_13C-separated_NOESY | 3mM KaiA135N U-15N,13C; 50mM sodium chloride; 20mM phosphate buffer | 100% D2O | 0.17 | 7.0 | ambient | 298 | |
4 | HNHB | 3mM KaiA135N U-15N; 50mM sodium chloride; 20mM phosphate buffer | 95% H2O/5% D2O | 0.17 | 7.0 | ambient | 298 | |
5 | HAHB | 3mM KaiA135N U-15N,13C; 50mM sodium chloride; 20mM phosphate buffer | 100% D2O | 0.17 | 7.0 | ambient | 298 | |
6 | BRCTCO/BRCTCN | 3mM KaiA135N U-15N,13C; 50mM sodium chloride; 20mM phosphate buffer | 100% D2O | 0.17 | 7.0 | ambient | 298 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 600 |
NMR Refinement | ||
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Method | Details | Software |
Distance geometry, Simulated annealing regularization, Simulated annealing refinement | The structures are based on 2034 restraints: 1816 are NOE-derived distance constraints, 187 dihedral angle restraints, 31 distance restraints from hydrogen bonds | VNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 50 |
Conformers Submitted Total Number | 25 |
Representative Model | 2 (closest to the average) |
Additional NMR Experimental Information | |
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Details | Submission corresponds to family of 25-low-energy-structures. The 1H, 15N and 13C chemical shifts of KaiA135N are deposited at the BMRB database (http://www.bmrb.wisc.edu) under the accession number 5031. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | VNMR | 6.1b | Varian Associates |
2 | processing | NMRPipe | 1.8 Rev 2001.030.21.27 | Delaglio |
3 | data analysis | PIPP | 4.2.6 | Garrett |
4 | refinement | X-PLOR | 3.851 | Brunger |