1ZN5
Solid State NMR Structure of the low-temperature form of the Pf1 Major Coat Protein in Magnetically Aligned Bacteriophage
SOLID-STATE NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | PISEMA | Approximately 50 mg/ml Pf1 bacteriophage, u-15N | 5 mM sodium borate buffer | 8 | ambient | 273 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | AVANCE | 750 |
NMR Refinement | ||
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Method | Details | Software |
Determination of torsion angles between adjacent residues using solid-state NMR frequencies | This is a backbone only model. Constant peptide plane geometry was assumed. Torsion angles phi and psi were allowed to vary within 10-20 degrees relative to phi=-65, psi=-40. Radial and angular positioning of subunits in a manner similar to and in comparison with structure 1PJF, which involved minimization against published neutron diffraction distance constraints and energy minimization with sidechains using the program SCWRL. | NMRPipe |
NMR Ensemble Information | |
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Conformer Selection Criteria | structural fitting of PISEMA spectrum with fixed peptide plane geometry |
Conformers Calculated Total Number | 100 |
Conformers Submitted Total Number | 27 |
Representative Model | 1 (closest to the average) |
Additional NMR Experimental Information | |
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Details | MODEL 1 IS THE BASIC SOLID-STATE NMR STRUCTURE (NO SIDECHAINS), WHILE MODELS 2-27 ARE IDENTICAL TRANSLATED AND ROTATED COPIES OF MODEL 1 INCLUDED TO PRESENT THE MODEL OF THE WHOLE BACTERIOPHAGE ASSEMBLY. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | data analysis | NMRPipe | 2.2 | |
2 | data analysis | Felix | 2000.1 | |
3 | structure solution | Matlab scripts | 1.0 | Nevzorov A.A., Opella, S.J. |
4 | refinement | SCWRL | Bower et al. |