7A5V
CryoEM structure of a human gamma-aminobutyric acid receptor, the GABA(A)R-beta3 homopentamer, in complex with histamine and megabody Mb25 in lipid nanodisc
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 30.343 |
| r_dihedral_angle_4_deg | 17.169 |
| r_long_range_B_refined | 15.676 |
| r_long_range_B_other | 15.675 |
| r_dihedral_angle_3_deg | 13.052 |
| r_scangle_other | 11.34 |
| r_mcangle_other | 8.965 |
| r_mcangle_it | 8.964 |
| r_dihedral_angle_1_deg | 7.135 |
| r_scbond_it | 6.905 |
| Sample |
|---|
| Human GABA(A)R-beta3 homopentamer in complex with Megabody-25 in lipid nanodisc |
| Sample Components |
| Human GABA(A)R-beta3 homopentamer |
| Megabody-25 |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | LEICA PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 371693 |
| Reported Resolution (Å) | 1.7 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C5 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | RECIPROCAL | ||||
| Refinement Protocol | AB INITIO MODEL | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI FALCON IV (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 40 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 300 |
| Maximum Defocus (nm) | 1100 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | 165000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EPU | |
| CTF CORRECTION | CTFFIND | 4.1.13 |
| MODEL FITTING | REFMAC | 5.8.0270 |
| INITIAL EULER ASSIGNMENT | RELION | 3.1 |
| FINAL EULER ASSIGNMENT | RELION | 3.1 |
| CLASSIFICATION | RELION | 3.1 |
| RECONSTRUCTION | RELION | 3.1 |
| MODEL REFINEMENT | REFMAC | 5.8.0270 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||
