2LZZ
Solution structure of a mutant of the triheme cytochrome PpcA from Geobacter sulfurreducens sheds light on the role of the conserved aromatic residue F15
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D 1H-15N HSQC | 0.4 mM [U-100% 15N] F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide | 93% H2O/7% D2O | 45 | 7.1 | ambient | 298 | |
2 | 2D 1H-1H TOCSY | 1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide | 93% H2O/7% D2O | 100 | 7.1 | ambient | 298 | |
3 | 2D 1H-1H COSY | 1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide | 93% H2O/7% D2O | 100 | 7.1 | ambient | 298 | |
4 | 2D 1H-1H NOESY | 1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide | 93% H2O/7% D2O | 100 | 7.1 | ambient | 298 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | Avance | 600 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing | TOPSPIN |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 200 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (lowest energy) |
Computation: NMR Software | ||||
---|---|---|---|---|
# | Classification | Version | Software Name | Author |
1 | processing | TOPSPIN | Bruker Biospin | |
2 | collection | TOPSPIN | Bruker Biospin | |
3 | chemical shift assignment | SPARKY | Goddard | |
4 | chemical shift calculation | PARADYANA | Turner, D. L. Brennan, L. Chamberlin, S. G. Louro, R. O. Xavier, A. V. | |
5 | refinement | PARADYANA | Turner, D. L. Brennan, L. Chamberlin, S. G. Louro, R. O. Xavier, A. V. | |
6 | superimposition | Molmol | Koradi, Billeter and Wuthrich | |
7 | visual inspection | Molmol | Koradi, Billeter and Wuthrich | |
8 | validation | CING | Nabuurs, Spronk, Krieger, Maassen, Vriend and Vuister |