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- PDB-6ruq: Structure of GluA2cryst in complex the antagonist ZK200775 and th... -
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Entry | Database: PDB / ID: 6ruq | ||||||||||||||||||
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Title | Structure of GluA2cryst in complex the antagonist ZK200775 and the negative allosteric modulator GYKI53655 at 4.65 A resolution | ||||||||||||||||||
![]() | Glutamate receptor 2 | ||||||||||||||||||
![]() | MEMBRANE PROTEIN / Receptor Negative allosteric modulator Antagonist Non-competitve antagonist | ||||||||||||||||||
Function / homology | ![]() spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / kainate selective glutamate receptor activity ...spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / kainate selective glutamate receptor activity / AMPA glutamate receptor complex / cellular response to glycine / extracellularly glutamate-gated ion channel activity / ionotropic glutamate receptor complex / asymmetric synapse / immunoglobulin binding / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / glutamate receptor binding / positive regulation of synaptic transmission / response to fungicide / regulation of synaptic transmission, glutamatergic / glutamate-gated receptor activity / cytoskeletal protein binding / extracellular ligand-gated monoatomic ion channel activity / presynaptic active zone membrane / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / somatodendritic compartment / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor binding / dendrite membrane / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / SNARE binding / dendritic shaft / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / protein tetramerization / synaptic membrane / establishment of protein localization / modulation of chemical synaptic transmission / postsynaptic density membrane / cerebral cortex development / Schaffer collateral - CA1 synapse / receptor internalization / terminal bouton / synaptic vesicle membrane / synaptic vesicle / presynapse / signaling receptor activity / amyloid-beta binding / presynaptic membrane / growth cone / scaffold protein binding / chemical synaptic transmission / dendritic spine / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density / axon / neuronal cell body / synapse / dendrite / protein-containing complex binding / protein kinase binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane Similarity search - Function | ||||||||||||||||||
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![]() | Krintel, C. / Venskutonyte, R. / Mirza, O.A. / Gajhede, M. / Kastrup, J.S. | ||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Binding of a negative allosteric modulator and competitive antagonist can occur simultaneously at the ionotropic glutamate receptor GluA2. Authors: Christian Krintel / Jerzy Dorosz / Andreas Haahr Larsen / Thor Seneca Thorsen / Raminta Venskutonytė / Osman Mirza / Michael Gajhede / Thomas Boesen / Jette Sandholm Kastrup / ![]() ![]() Abstract: Ionotropic glutamate receptors are ligand-gated ion channels governing neurotransmission in the central nervous system. Three major types of antagonists are known for the AMPA-type receptor GluA2: ...Ionotropic glutamate receptors are ligand-gated ion channels governing neurotransmission in the central nervous system. Three major types of antagonists are known for the AMPA-type receptor GluA2: competitive, noncompetitive (i.e., negative allosteric modulators; NAMs) used for treatment of epilepsy, and uncompetitive antagonists. We here report a 4.65 Å resolution X-ray structure of GluA2, revealing that four molecules of the competitive antagonist ZK200775 and four molecules of the NAM GYKI53655 are capable of binding at the same time. Using negative stain electron microscopy, we show that GYKI53655 alone or ZK200775/GYKI53655 in combination predominantly results in compact receptor forms. The agonist AMPA provides a mixed population of compact and bulgy shapes of GluA2 not impacted by addition of GYKI53655. Taken together, this suggests that the two different mechanisms of antagonism that lead to channel closure are independent and that the distribution between bulgy and compact receptors primarily depends on the ligand bound in the glutamate binding site. DATABASE: The atomic coordinates and structure factors from the crystal structure determination have been deposited in the Protein Data Bank under accession code https://doi.org/10.2210/pdb6RUQ/pdb. The electron microscopy 3D reconstruction volumes have been deposited in EMDB (EMD-4875: Apo; EMD-4920: ZK200775/GYKI53655; EMD-4921: AMPA compact; EMD-4922: AMPA/GYKI53655 bulgy; EMD-4923: GYKI53655; EMD-4924: AMPA bulgy; EMD-4925: AMPA/GYKI53655 compact). | ||||||||||||||||||
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-Validation report
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Full document | ![]() | 2.9 MB | Display | |
Data in XML | ![]() | 112.6 KB | Display | |
Data in CIF | ![]() | 146.3 KB | Display | |
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-Related structure data
Related structure data | ![]() 4875C ![]() 4920C ![]() 4921C ![]() 4922C ![]() 4923C ![]() 4924C ![]() 4925C ![]() 5l1hS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Ens-ID: 1
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