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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 7koo | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | Alpha-7 nicotinic acetylcholine receptor bound to alpha-bungarotoxin in a resting state | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Cys-loop receptor | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報sensory processing / synaptic transmission involved in micturition / response to acetylcholine / dendrite arborization / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / acetylcholine receptor inhibitor activity / chloride channel regulator activity / regulation of amyloid fibril formation ...sensory processing / synaptic transmission involved in micturition / response to acetylcholine / dendrite arborization / Highly calcium permeable postsynaptic nicotinic acetylcholine receptors / acetylcholine receptor activity / acetylcholine-gated channel complex / acetylcholine receptor inhibitor activity / chloride channel regulator activity / regulation of amyloid fibril formation / acetylcholine-gated monoatomic cation-selective channel activity / short-term memory / ion channel regulator activity / acetylcholine binding / dendritic spine organization / regulation of amyloid precursor protein catabolic process / acetylcholine receptor signaling pathway / positive regulation of amyloid-beta formation / negative regulation of amyloid-beta formation / response to amyloid-beta / positive regulation of protein metabolic process / modulation of excitatory postsynaptic potential / negative regulation of tumor necrosis factor production / plasma membrane raft / monoatomic ion channel activity / toxic substance binding / monoatomic ion transport / negative regulation of cytokine production involved in inflammatory response / positive regulation of excitatory postsynaptic potential / positive regulation of long-term synaptic potentiation / response to nicotine / negative regulation of canonical NF-kappaB signal transduction / excitatory postsynaptic potential / regulation of membrane potential / electron transport chain / synapse organization / cognition / calcium channel activity / 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 / learning or memory / response to hypoxia / periplasmic space / electron transfer activity / postsynaptic membrane / positive regulation of ERK1 and ERK2 cascade / positive regulation of MAPK cascade / neuron projection / postsynapse / iron ion binding / heme binding / positive regulation of cell population proliferation / synapse / dendrite / endoplasmic reticulum membrane / signal transduction / protein homodimerization activity / extracellular region / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト)![]() Bungarus multicinctus (タイワンアマガサ) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Noviello, C.M. / Hibbs, R.E. / Gharpure, A. / Mukhtasimova, N. / Cabuco, R. / Baxter, L. / Borek, D. / Sine, S. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 米国, 2件
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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. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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構造の表示
| ムービー |
ムービービューア |
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| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 7koo.cif.gz | 777.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7koo.ent.gz | 653.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7koo.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ko/7koo ftp://data.pdbj.org/pub/pdb/validation_reports/ko/7koo | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
-タンパク質 , 2種, 10分子 ABCDEFGHIJ
| #1: タンパク質 | 分子量: 63832.293 Da / 分子数: 5 / 由来タイプ: 組換発現 由来: (組換発現) Homo sapiens (ヒト), (組換発現) ![]() 遺伝子: CHRNA7, NACHRA7, cybC / 細胞株 (発現宿主): GnTi- / 発現宿主: Homo sapiens (ヒト) / 株 (発現宿主): HEK / Variant (発現宿主): 293 / 参照: UniProt: P36544, UniProt: P0ABE7#2: タンパク質 | 分子量: 7721.973 Da / 分子数: 5 / 由来タイプ: 合成 由来: (合成) Bungarus multicinctus (タイワンアマガサ)参照: UniProt: P60616 |
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-糖 , 3種, 15分子 
| #3: 多糖 | alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #5: 糖 | ChemComp-NAG / |
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-非ポリマー , 1種, 5分子 
| #6: 化合物 | ChemComp-CA / |
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-詳細
| 研究の焦点であるリガンドがあるか | N |
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| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 緩衝液 | pH: 7.4 | ||||||||||||||||||||||||
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD |
| 撮影 | 電子線照射量: 61 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.19_4080: / 分類: 精密化 | ||||||||||||||||||||||||
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| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 792521 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3 Å | ||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
Bungarus multicinctus (タイワンアマガサ)
米国, 2件
引用
UCSF Chimera










PDBj










