+Open data
-Basic information
Entry | Database: PDB / ID: 7lvt | ||||||
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Title | Structure of full-length GluK1 with L-Glu | ||||||
Components | Isoform Glur5-2 of Glutamate receptor ionotropic, kainate 1 | ||||||
Keywords | MEMBRANE PROTEIN / ion channel / glutamate receptor / kainate receptor | ||||||
Function / homology | Function and homology information : / negative regulation of synaptic transmission, GABAergic / L-glutamate transmembrane transporter activity / positive regulation of gamma-aminobutyric acid secretion / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential ...: / negative regulation of synaptic transmission, GABAergic / L-glutamate transmembrane transporter activity / positive regulation of gamma-aminobutyric acid secretion / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential / glutamate receptor activity / glutamate binding / adult behavior / behavioral response to pain / membrane depolarization / ligand-gated monoatomic ion channel activity / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / glutamate-gated receptor activity / ionotropic glutamate receptor signaling pathway / excitatory postsynaptic potential / synaptic transmission, glutamatergic / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / positive regulation of synaptic transmission, GABAergic / regulation of synaptic plasticity / modulation of chemical synaptic transmission / terminal bouton / presynaptic membrane / signaling receptor activity / nervous system development / chemical synaptic transmission / postsynaptic membrane / postsynaptic density / receptor complex / neuronal cell body / glutamatergic synapse / synapse / dendrite / membrane / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | Rattus norvegicus (Norway rat) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||
Authors | Meyerson, J.R. / Selvakumar, P. | ||||||
Citation | Journal: Cell Rep / Year: 2021 Title: Structural and compositional diversity in the kainate receptor family. Authors: Purushotham Selvakumar / Joon Lee / Nandish Khanra / Changhao He / Hermany Munguba / Lisa Kiese / Johannes Broichhagen / Andreas Reiner / Joshua Levitz / Joel R Meyerson / Abstract: The kainate receptors (KARs) are members of the ionotropic glutamate receptor family and assemble into tetramers from a pool of five subunit types (GluK1-5). Each subunit confers distinct functional ...The kainate receptors (KARs) are members of the ionotropic glutamate receptor family and assemble into tetramers from a pool of five subunit types (GluK1-5). Each subunit confers distinct functional properties to a receptor, but the compositional and stoichiometric diversity of KAR tetramers is not well understood. To address this, we first solve the structure of the GluK1 homomer, which enables a systematic assessment of structural compatibility among KAR subunits. Next, we analyze single-cell RNA sequencing data, which reveal extreme diversity in the combinations of two or more KAR subunits co-expressed within the same cell. We then investigate the composition of individual receptor complexes using single-molecule fluorescence techniques and find that di-heteromers assembled from GluK1, GluK2, or GluK3 can form with all possible stoichiometries, while GluK1/K5, GluK2/K5, and GluK3/K5 can form 3:1 or 2:2 complexes. Finally, using three-color single-molecule imaging, we discover that KARs can form tri- and tetra-heteromers. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 7lvt.cif.gz | 469.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7lvt.ent.gz | 366.7 KB | Display | PDB format |
PDBx/mmJSON format | 7lvt.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/lv/7lvt ftp://data.pdbj.org/pub/pdb/validation_reports/lv/7lvt | HTTPS FTP |
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-Related structure data
Related structure data | 23542MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 102562.078 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Grik1, Glur5 / Production host: Homo sapiens (human) / References: UniProt: P22756-2 |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: GluK1 tetrameric complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Rattus norvegicus (Norway rat) |
Source (recombinant) | Organism: Homo sapiens (human) |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Talos Arctica / Image courtesy: FEI Company |
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Microscopy | Model: FEI TALOS ARCTICA |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy |
Image recording | Electron dose: 52 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 321611 / Symmetry type: POINT |