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Yorodumi- EMDB-29350: Native GABA-A receptor from the mouse brain, alpha1-beta2-gamma2 ... -
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Open data
- Basic information
Basic information
| Entry |  | |||||||||
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| Title | Native GABA-A receptor from the mouse brain, alpha1-beta2-gamma2 subtype, in complex with GABA and allopregnanolone | |||||||||
|  Map data | Native GABAA receptors with two alpha1 subunits, in complex with GABA and allopregnanolone | |||||||||
|  Sample | 
 | |||||||||
|  Keywords | ligand-gated ion channel / cys-loop receptor / neurotransmitter receptor / MEMBRANE PROTEIN | |||||||||
| Function / homology |  Function and homology information GABA receptor activation / inhibitory synapse / cellular response to histamine / inner ear receptor cell development / inhibitory synapse assembly / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / innervation / postsynaptic specialization membrane ...GABA receptor activation / inhibitory synapse / cellular response to histamine / inner ear receptor cell development / inhibitory synapse assembly / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / innervation / postsynaptic specialization membrane / gamma-aminobutyric acid signaling pathway / synaptic transmission, GABAergic / chloride channel activity / adult behavior / cochlea development / chloride channel complex / neuron development / cytoplasmic vesicle membrane / chloride transmembrane transport / post-embryonic development / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / GABA-ergic synapse / cytoplasmic vesicle / chemical synaptic transmission / dendritic spine / axon / dendrite / plasma membrane Similarity search - Function | |||||||||
| Biological species |   Mus musculus (house mouse) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.5 Å | |||||||||
|  Authors | Sun C / Gouaux E | |||||||||
| Funding support |  United States, 2 items 
 | |||||||||
|  Citation | Journal: Acta Crystallogr D Struct Biol / Year: 2018 Title: Real-space refinement in PHENIX for cryo-EM and crystallography. Authors: Pavel V Afonine / Billy K Poon / Randy J Read / Oleg V Sobolev / Thomas C Terwilliger / Alexandre Urzhumtsev / Paul D Adams /      Abstract: This article describes the implementation of real-space refinement in the phenix.real_space_refine program from the PHENIX suite. The use of a simplified refinement target function enables very fast ...This article describes the implementation of real-space refinement in the phenix.real_space_refine program from the PHENIX suite. The use of a simplified refinement target function enables very fast calculation, which in turn makes it possible to identify optimal data-restraint weights as part of routine refinements with little runtime cost. Refinement of atomic models against low-resolution data benefits from the inclusion of as much additional information as is available. In addition to standard restraints on covalent geometry, phenix.real_space_refine makes use of extra information such as secondary-structure and rotamer-specific restraints, as well as restraints or constraints on internal molecular symmetry. The re-refinement of 385 cryo-EM-derived models available in the Protein Data Bank at resolutions of 6 Å or better shows significant improvement of the models and of the fit of these models to the target maps. | |||||||||
| History | 
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- Structure visualization
Structure visualization
| Supplemental images | 
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- Downloads & links
Downloads & links
-EMDB archive
| Map data |  emd_29350.map.gz | 86 MB |  EMDB map data format | |
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| Header (meta data) |  emd-29350-v30.xml  emd-29350.xml | 25.3 KB 25.3 KB | Display Display |  EMDB header | 
| FSC (resolution estimation) |  emd_29350_fsc.xml | 11.8 KB | Display |  FSC data file | 
| Images |  emd_29350.png | 130.9 KB | ||
| Masks |  emd_29350_msk_1.map | 178 MB |  Mask map | |
| Filedesc metadata |  emd-29350.cif.gz | 8.1 KB | ||
| Others |  emd_29350_half_map_1.map.gz  emd_29350_half_map_2.map.gz | 165.4 MB 165.4 MB | ||
| Archive directory |  http://ftp.pdbj.org/pub/emdb/structures/EMD-29350  ftp://ftp.pdbj.org/pub/emdb/structures/EMD-29350 | HTTPS FTP | 
-Validation report
| Summary document |  emd_29350_validation.pdf.gz | 1.2 MB | Display |  EMDB validaton report | 
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| Full document |  emd_29350_full_validation.pdf.gz | 1.2 MB | Display | |
| Data in XML |  emd_29350_validation.xml.gz | 20.3 KB | Display | |
| Data in CIF |  emd_29350_validation.cif.gz | 25.9 KB | Display | |
| Arichive directory |  https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29350  ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29350 | HTTPS FTP | 
-Related structure data
| Related structure data |  8foiMC  8g4nC  8g4oC  8g4xC  8g5fC  8g5gC  8g5hC M: atomic model generated by this map C: citing same article ( | 
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| Similar structure data | Similarity search - Function & homology  F&H Search | 
- Links
Links
| EMDB pages |  EMDB (EBI/PDBe) /  EMDataResource | 
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| Related items in Molecule of the Month | 
- Map
Map
| File |  Download / File: emd_29350.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Native GABAA receptors with two alpha1 subunits, in complex with GABA and allopregnanolone | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
 
 Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.831 Å | ||||||||||||||||||||||||||||||||||||
| Density | 
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML: 
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-Supplemental data
-Mask #1
| File |  emd_29350_msk_1.map | ||||||||||||
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| Projections & Slices | 
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| Density Histograms | 
-Half map: #2
| File | emd_29350_half_map_1.map | ||||||||||||
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| Projections & Slices | 
 | ||||||||||||
| Density Histograms | 
-Half map: #1
| File | emd_29350_half_map_2.map | ||||||||||||
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| Projections & Slices | 
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| Density Histograms | 
- Sample components
Sample components
+Entire : Native GABAA Receptor isolated from mouse brain containing two al...
+Supramolecule #1: Native GABAA Receptor isolated from mouse brain containing two al...
+Macromolecule #1: Gamma-aminobutyric acid receptor subunit alpha-1
+Macromolecule #2: Gamma-aminobutyric acid receptor subunit beta-2
+Macromolecule #3: Gamma-aminobutyric acid receptor subunit gamma-2
+Macromolecule #4: Heavy Chain of 8E3 Fab
+Macromolecule #5: Light Chain of 8E3-Fab
+Macromolecule #9: [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(o...
+Macromolecule #10: DODECANE
+Macromolecule #11: N-OCTANE
+Macromolecule #12: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...
+Macromolecule #13: GAMMA-AMINO-BUTANOIC ACID
+Macromolecule #14: allopregnanolone
+Macromolecule #15: 2-acetamido-2-deoxy-beta-D-glucopyranose
-Experimental details
-Structure determination
| Method | cryo EM | 
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|  Processing | single particle reconstruction | 
| Aggregation state | particle | 
- Sample preparation
Sample preparation
| Concentration | 0.1 mg/mL | |||||||||
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| Buffer | pH: 8 Component: 
 | |||||||||
| Grid | Model: Quantifoil R2/1 / Material: GOLD / Mesh: 200 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 45 sec. / Pretreatment - Atmosphere: AIR | |||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV | |||||||||
| Details | This sample was monodisperse. | 
- Electron microscopy
Electron microscopy
| Microscope | FEI TITAN KRIOS | 
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| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 | 
| Electron beam | Acceleration voltage: 300 kV / Electron source:  FIELD EMISSION GUN | 
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.1 µm / Nominal defocus min: 0.8 µm | 
| Experimental equipment |  Model: Titan Krios / Image courtesy: FEI Company | 
+ Image processing
Image processing
-Atomic model buiding 1
| Refinement | Space: REAL / Protocol: AB INITIO MODEL | 
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| Output model |  PDB-8foi:  | 
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