登録情報 データベース : EMDB / ID : EMD-22979 構造の表示 ダウンロードとリンクタイトル Alpha-7 nicotinic acetylcholine receptor bound to alpha-bungarotoxin in a resting state. マップデータAlpha-7 nicotinic acetylcholine receptor bound to alpha-bungarotoxin in a resting state primary map 詳細 試料複合体 : Complex between alpha-bungarotoxin and the human alpha-7 nicotinic acetylcholine receptor複合体 : Neuronal acetylcholine receptor subunit alpha-7,Soluble cytochrome b562 fusionタンパク質・ペプチド : Neuronal acetylcholine receptor subunit alpha-7,Soluble cytochrome b562 fusion複合体 : Alpha-bungarotoxin isoform V31タンパク質・ペプチド : Alpha-bungarotoxin isoform V31リガンド : 2-acetamido-2-deoxy-beta-D-glucopyranoseリガンド : CALCIUM ION 詳細 キーワード Cys-loop receptor / MEMBRANE PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
sensory processing / synaptic transmission involved in micturition / dendrite arborization / response to acetylcholine / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / regulation of amyloid fibril formation / acetylcholine receptor inhibitor activity / acetylcholine-gated monoatomic cation-selective channel activity ... sensory processing / synaptic transmission involved in micturition / dendrite arborization / response to acetylcholine / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / regulation of amyloid fibril formation / acetylcholine receptor inhibitor activity / acetylcholine-gated monoatomic cation-selective channel activity / short-term memory / cation channel complex / ion channel regulator activity / dendritic spine organization / chloride channel regulator activity / acetylcholine binding / regulation of amyloid precursor protein catabolic process / acetylcholine receptor signaling pathway / neurotransmitter receptor complex / positive regulation of amyloid-beta formation / negative regulation of amyloid-beta formation / positive regulation of protein metabolic process / modulation of excitatory postsynaptic potential / response to amyloid-beta / monoatomic ion channel activity / ligand-gated ion channel signaling pathway / plasma membrane raft / negative regulation of tumor necrosis factor production / positive regulation of excitatory postsynaptic potential / toxic substance binding / monoatomic ion transport / negative regulation of canonical NF-kappaB signal transduction / negative regulation of cytokine production involved in inflammatory response / positive regulation of long-term synaptic potentiation / excitatory postsynaptic potential / regulation of membrane potential / response to nicotine / electron transport chain / synapse organization / calcium channel activity / cognition / memory / intracellular calcium ion homeostasis / positive regulation of angiogenesis / calcium ion transport / transmembrane signaling receptor activity / amyloid-beta binding / toxin activity / monoatomic ion transmembrane transport / chemical synaptic transmission / postsynaptic membrane / response to hypoxia / learning or memory / periplasmic space / electron transfer activity / positive regulation of ERK1 and ERK2 cascade / postsynapse / neuron projection / positive regulation of MAPK cascade / iron ion binding / positive regulation of cell population proliferation / synapse / heme binding / dendrite / endoplasmic reticulum membrane / signal transduction / protein homodimerization activity / extracellular region / membrane / plasma membrane 類似検索 - 分子機能 Snake toxin, conserved site / Snake toxins signature. / : / Snake toxin cobra-type / Snake three-finger toxin / Nicotinic acetylcholine receptor / Snake toxin-like superfamily / Neurotransmitter-gated ion-channel, conserved site / Neurotransmitter-gated ion-channels signature. / Neurotransmitter-gated ion-channel transmembrane domain ... Snake toxin, conserved site / Snake toxins signature. / : / Snake toxin cobra-type / Snake three-finger toxin / Nicotinic acetylcholine receptor / Snake toxin-like superfamily / Neurotransmitter-gated ion-channel, conserved site / Neurotransmitter-gated ion-channels signature. / Neurotransmitter-gated ion-channel transmembrane domain / Neurotransmitter-gated ion-channel transmembrane region / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain / Neurotransmitter-gated ion-channel ligand-binding domain superfamily / Neurotransmitter-gated ion-channel ligand binding domain 類似検索 - ドメイン・相同性 Soluble cytochrome b562 / Neuronal acetylcholine receptor subunit alpha-7 / Alpha-bungarotoxin isoform V31 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Bungarus multicinctus (タイワンアマガサ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.0 Å 詳細 データ登録者Noviello CM / Hibbs RE 資金援助 米国, 2件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of Mental Health (NIH/NIMH) NS095899 米国 National Institutes of Health/National Institute of Mental Health (NIH/NIMH) NS077983 米国
引用ジャーナル : Cell / 年 : 2021タイトル : Structure and gating mechanism of the α7 nicotinic acetylcholine receptor.著者 : Colleen M Noviello / Anant Gharpure / Nuriya Mukhtasimova / Rico Cabuco / Leah Baxter / Dominika Borek / Steven M Sine / Ryan E Hibbs / 要旨 : The α7 nicotinic acetylcholine receptor plays critical roles in the central nervous system and in the cholinergic inflammatory pathway. This ligand-gated ion channel assembles as a homopentamer, is ... The α7 nicotinic acetylcholine receptor plays critical roles in the central nervous system and in the cholinergic inflammatory pathway. This ligand-gated ion channel assembles as a homopentamer, is exceptionally permeable to Ca, and desensitizes faster than any other Cys-loop receptor. The α7 receptor has served as a prototype for the Cys-loop superfamily yet has proven refractory to structural analysis. We present cryo-EM structures of the human α7 nicotinic receptor in a lipidic environment in resting, activated, and desensitized states, illuminating the principal steps in the gating cycle. The structures also reveal elements that contribute to its function, including a C-terminal latch that is permissive for channel opening, and an anionic ring in the extracellular vestibule that contributes to its high conductance and calcium permeability. Comparisons among the α7 structures provide a foundation for mapping the gating cycle and reveal divergence in gating mechanisms in the Cys-loop receptor superfamily. 履歴 登録 2020年11月9日 - ヘッダ(付随情報) 公開 2021年3月17日 - マップ公開 2021年3月17日 - 更新 2025年5月21日 - 現状 2025年5月21日 処理サイト : RCSB / 状態 : 公開
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