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- EMDB-29007: Human L-type voltage-gated calcium channel Cav1.2 complexed with ... -
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Open data
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Basic information
Entry | ![]() | |||||||||
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Title | Human L-type voltage-gated calcium channel Cav1.2 complexed with gabapentin (Segment Map) | |||||||||
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![]() | voltage-gated calcium channel / CaV alpha2delta / drug binding / gabapentinoid / MEMBRANE PROTEIN / gabapentin | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Chen Z / Mondal A / Minor DL | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for Caαδ:gabapentin binding. Authors: Zhou Chen / Abhisek Mondal / Daniel L Minor / ![]() Abstract: Gabapentinoid drugs for pain and anxiety act on the Caαδ-1 and Caαδ-2 subunits of high-voltage-activated calcium channels (Ca1s and Ca2s). Here we present the cryo-EM structure of the gabapentin- ...Gabapentinoid drugs for pain and anxiety act on the Caαδ-1 and Caαδ-2 subunits of high-voltage-activated calcium channels (Ca1s and Ca2s). Here we present the cryo-EM structure of the gabapentin-bound brain and cardiac Ca1.2/Caβ/Caαδ-1 channel. The data reveal a binding pocket in the Caαδ-1 dCache1 domain that completely encapsulates gabapentin and define Caαδ isoform sequence variations that explain the gabapentin binding selectivity of Caαδ-1 and Caαδ-2. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 17.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 14 KB 14 KB | Display Display | ![]() |
Images | ![]() | 52.7 KB | ||
Others | ![]() ![]() | 238.2 MB 238.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 781.5 KB | Display | ![]() |
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Full document | ![]() | 781.1 KB | Display | |
Data in XML | ![]() | 16.7 KB | Display | |
Data in CIF | ![]() | 19.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Map
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Voxel size | X=Y=Z: 0.835 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_29007_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_29007_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Ternary complex of human CaV alpha1C with rabbit CaV alpha2delta-1
Entire | Name: Ternary complex of human CaV alpha1C with rabbit CaV alpha2delta-1 |
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Components |
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-Supramolecule #1: Ternary complex of human CaV alpha1C with rabbit CaV alpha2delta-1
Supramolecule | Name: Ternary complex of human CaV alpha1C with rabbit CaV alpha2delta-1 type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 |
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-Supramolecule #2: Rabbit CaV alpha2delta-1
Supramolecule | Name: Rabbit CaV alpha2delta-1 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 125 KDa |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 2.7 mg/mL |
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Buffer | pH: 8 |
Grid | Model: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 46.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.7 µm / Nominal defocus min: 0.9 µm / Nominal magnification: 105000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 259107 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |