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Yorodumi- EMDB-29350: Native GABA-A receptor from the mouse brain, alpha1-beta2-gamma2 ... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-29350 | |||||||||
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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 |
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Keywords | ligand-gated ion channel / cys-loop receptor / neurotransmitter receptor / MEMBRANE PROTEIN | |||||||||
Function / homology | Function and homology information GABA receptor activation / inhibitory extracellular ligand-gated monoatomic ion channel activity / diazepam binding / inhibitory synapse / GABA receptor complex / organic cyclic compound binding / inner ear receptor cell development / cellular response to histamine / GABA-A receptor activity / GABA-gated chloride ion channel activity ...GABA receptor activation / inhibitory extracellular ligand-gated monoatomic ion channel activity / diazepam binding / inhibitory synapse / GABA receptor complex / organic cyclic compound binding / inner ear receptor cell development / cellular response to histamine / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / inhibitory synapse assembly / innervation / synaptic transmission, GABAergic / gamma-aminobutyric acid signaling pathway / postsynaptic specialization membrane / neurotransmitter receptor activity / chloride channel activity / cochlea development / adult behavior / chloride channel complex / regulation of postsynaptic membrane potential / transmembrane transporter complex / neuron development / GABA-ergic synapse / presynaptic active zone membrane / chloride transmembrane transport / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / post-embryonic development / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / cytoplasmic vesicle membrane / cytoplasmic vesicle / chemical synaptic transmission / postsynapse / neuron projection / axon / glutamatergic synapse / synapse / 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
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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
Supplemental images |
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-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 (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-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 |
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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
+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
Concentration | 0.1 mg/mL | |||||||||
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Buffer | pH: 8 Component:
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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
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
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL |
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Output model | PDB-8foi: |