ArticleNature structural & molecular biology2025
Activation of kainate receptor GluK2-Neto2 complex.
Article in Nature structural & molecular biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Pre-activation and gating pathway of AMPA receptors revealed by full and partial agonists.Nature structural & molecular biology · 2026Article
- Tuning of AMPA receptor activation by inhibitory auxiliary subunits and epilepsy-associated disease mutations.Nature communications · 2026Article
- The AMPA receptor life cycle: assembly, regulation and synaptic diversity.Nature reviews. Neuroscience · 2026Review
- Cryo-EM structures of apo, agonist- and antagonist-bound heteromeric kainate receptors.Science advances · 2026Article
- Structures of partially occupied hetero-tetramers provide insight into kainate receptor activation and desensitization.Nature communications · 2026Article
- Multilayered regulation of GluK3 kainate receptors is mediated by Neto subunits and zinc.Communications biology · 2026Article
- Structural insights into kainate receptor desensitization.Nature communications · 2025Article
- Structure and gating of kainate receptors.Frontiers in pharmacology · 2025Review
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Authors and funding
5 authors.
Funding
Abstract
Kainate receptors (KARs) are tetrameric, ligand-gated ion channels of the ionotropic glutamate receptor family that mediate excitatory neurotransmission and modulate neuronal circuits and synaptic plasticity during development of the central nervous system. KARs are implicated in psychiatric and neurological diseases and represent a target of therapeutic intervention. Native KARs form complexes with neuropilin and tolloid-like auxiliary subunits (Neto1 and Neto2), which modulate their function, trafficking and synaptic localization. Here we present structures of rat GluK2 KAR in the apo closed state and in the open states activated by agonist kainate and positive allosteric modulator BPAM344, solved in the presence and absence of Neto2 using time-resolved cryo-electron microscopy. While the binding of Neto2 does not change the behavior of individual or dimeric ligand-binding domains (LBDs) or the ion channel, it prevents tightening of the interface between two LBD dimers during activation and slows the kinetics of deactivation. Our structures illuminate the mechanism of KAR activation and its modulation by Neto2.
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Registered trials
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