1SJJ
Cryo-EM Structure of Chicken Gizzard Smooth Muscle alpha-Actinin
ELECTRON CRYSTALLOGRAPHY
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 263.1 | α = 90 |
| b = 203.7 | β = 90 |
| c = 100 | γ = 107.1 |
| Symmetry | |
|---|---|
| Space Group | P 1 1 2 |
Refinement
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 14014 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | |
| Sample |
|---|
| alpha-actinin |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | 2D ARRAY |
| Vitrification Instrument | |
| Cryogen Name | |
| Sample Vitrification Details | Plunge frozen in liquid ethane |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | CRYSTALLOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | 20 |
| Resolution Method | |
| Other Details | Fourier transforms of images were merged using standard 2-D crystal programs with amplitudes and phases derived from images alone. |
| Refinement Type | |
| Symmetry Type | 2D CRYSTAL |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (1DXX, 1HCI, 1CFD) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | highest cross correlation coefficient and lowest interatom conflicts | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | REFINEMENT PROTOCOL--rigid body | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | KODAK SO-163 FILM | ||||||||
| Electron Dose (electrons/Å**2) | |||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | 100 |
| Microscope Model | FEI/PHILIPS CM300FEG/T |
| Minimum Defocus (nm) | 2000 |
| Maximum Defocus (nm) | 6000 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | 68 |
| Nominal CS | 2 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 24000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | RSRef | |
| RECONSTRUCTION | MRC | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| Correction of phases only | ||||
