ELECTRON CRYSTALLOGRAPHY
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 167 | α = 90 |
| b = 167 | β = 90 |
| c = 250 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 3 2 1 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | electron | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work (Depositor) | R-Free (Depositor) | Mean Isotropic B | |||||||||||
| ELECTRON CRYSTALLOGRAPHY | 8 | ||||||||||||||||||
| Temperature Factor Modeling | ||||||
|---|---|---|---|---|---|---|
| Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 14082 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | |
| Sample |
|---|
| Neurospora ATPase hexamer crystal |
| Sample Components |
| plasma membrane proton ATPase hexameric assembly |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | 2D ARRAY |
| Vitrification Instrument | |
| Cryogen Name | |
| Sample Vitrification Details | 2D crystals were vitrified by immersion in liquid nitrogen |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | CRYSTALLOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | 8 |
| Resolution Method | |
| Other Details | |
| Refinement Type | |
| Symmetry Type | 2D CRYSTAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | best visual fit using the program o | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | METHOD--manual REFINEMENT PROTOCOL--manual fit | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | KODAK SO-163 FILM | ||||||||
| Electron Dose (electrons/Å**2) | 25 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | 4 |
| Microscope Model | JEOL 3000SFF |
| Minimum Defocus (nm) | 600 |
| Maximum Defocus (nm) | 1200 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | 60 |
| Nominal CS | 1.6 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 50000 |
| Calibrated Magnification | 50000 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | Images were also recorded on JEOL 2000 EX and Philips CM200 FEG electron microscopes at 80 K at a dose of 1000 e/nm**2 |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| RECONSTRUCTION | MRC | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| crystallographic | ||||
