- PDB-9ovv: Heteromeric GluA1/A2-CNIH1 in the activated state, composite map ... -
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基本情報
登録情報
データベース: PDB / ID: 9ovv
タイトル
Heteromeric GluA1/A2-CNIH1 in the activated state, composite map of LBD-TMD
要素
(Isoform Flip of Glutamate receptor ...) x 2
Protein cornichon homolog 1
キーワード
MEMBRANE PROTEIN / GluA1A2-CNIH2 heterotetramer active iGluR
機能・相同性
機能・相同性情報
Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / myosin V binding / neuron spine / proximal dendrite ...Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / myosin V binding / neuron spine / proximal dendrite / Cargo concentration in the ER / Trafficking of AMPA receptors / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / cellular response to L-glutamate / cellular response to dsRNA / ligand-gated calcium channel activity / dendritic spine membrane / COPII-mediated vesicle transport / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / long-term synaptic depression / cellular response to peptide hormone stimulus / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / response to psychosocial stress / peptide hormone receptor binding / response to morphine / Activation of AMPA receptors / spinal cord development / ligand-gated monoatomic cation channel activity / perisynaptic space / neuronal cell body membrane / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / behavioral response to pain / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / asymmetric synapse / response to electrical stimulus / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / glutamate receptor binding / conditioned place preference / positive regulation of synaptic transmission / long-term memory / postsynaptic density, intracellular component / response to fungicide / neuronal action potential / regulation of synaptic transmission, glutamatergic / extracellular ligand-gated monoatomic ion channel activity / vesicle-mediated transport / glutamate-gated receptor activity / cytoskeletal protein binding / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / somatodendritic compartment / endoplasmic reticulum-Golgi intermediate compartment membrane / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / synapse assembly / excitatory synapse / ionotropic glutamate receptor signaling pathway / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / dendritic shaft / synaptic membrane / SNARE binding / response to cocaine / PDZ domain binding / neuromuscular junction / cellular response to amino acid stimulus / establishment of protein localization / synaptic transmission, glutamatergic / protein tetramerization / ER to Golgi transport vesicle membrane / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / response to nutrient levels / cerebral cortex development / regulation of synaptic plasticity / receptor internalization / recycling endosome / postsynaptic density membrane / response to peptide hormone / cellular response to growth factor stimulus 類似検索 - 分子機能
Cornichon / Cornichon, conserved site / Cornichon protein / Cornichon family signature. / Cornichon / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site ...Cornichon / Cornichon, conserved site / Cornichon protein / Cornichon family signature. / Cornichon / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / : / Ionotropic glutamate receptor / Eukaryotic homologues of bacterial periplasmic substrate binding proteins. / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I 類似検索 - ドメイン・相同性
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
U24 GM129539
米国
Simons Foundation
SF349247
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
U24 GM129541
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
F31NS132554
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
NS139087
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
NS083660
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
NS107253
米国
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)
AR078814
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
CA206573
米国
引用
ジャーナル: Nat Commun / 年: 2026 タイトル: Auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric GluA1/A2 AMPA receptor core. 著者: Laura Y Yen / Thomas P Newton / Maria V Yelshanskaya / Muhammed Aktolun / Shanti Pal Gangwar / Rasmus P Clausen / Maria G Kurnikova / Alexander I Sobolevsky / 要旨: AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their ...AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their dysregulation is implicated in numerous neurological disorders. The functional diversity of AMPARs arises from variations in their subunit composition and also their association with auxiliary subunits. While multiple structures of homomeric AMPARs have been reported, structural information for the heteromeric core - particularly in the absence of auxiliary subunits, which would serve as a functional and structural baseline - has been limited. Here, we report cryo-electron microscopy structures of GluA1/A2, the most abundant AMPAR di-heteromer in the brain, in the closed, open, and desensitized states. Using molecular dynamics (MD) simulations and cross-correlating structural and functional information, we find that auxiliary subunits increase the diameter of channel pore, which corresponds to larger conductance. Likewise, we find that recovery from desensitization slows with greater disruption of two-fold rotational symmetry of the ligand-binding domain dimer in the desensitized state. Both receptor activation and desensitization vary with the type and number of associated auxiliary proteins. These structures offer a foundation for uncovering how auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric AMPARs.
履歴
登録
2025年5月31日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2026年4月8日
Provider: repository / タイプ: Initial release
改定 1.0
2026年4月8日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2026年4月8日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2026年4月8日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
pH: 8 詳細: 150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 500 uM (R,R)-2b, 1 mM glutamate
緩衝液成分
ID
濃度
名称
式
Buffer-ID
1
150mM
sodiumchloride
NaCl
1
2
20mM
Tris-HCl
C4H11NO3
1
3
0.05 %
digitonin
C56H92O29
1
4
500uM
(R,R)-2b
C14H14N2O2
1
5
1mM
glutamate
C5H9NO4
1
試料
濃度: 4.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample had compositional heterogeneity, with broken particles seen throughout. Otherwise, sample was monodisperse