+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8c20 | ||||||
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タイトル | Tetrameric 5-HT3aR in Salipro (holo state, symmetric) | ||||||
要素 | 5-hydroxytryptamine receptor 3A | ||||||
キーワード | MEMBRANE PROTEIN / 5-HT3R / Serotonin / receptor / tetramer / ion channel | ||||||
機能・相同性 | 機能・相同性情報 Neurotransmitter receptors and postsynaptic signal transmission / serotonin-gated monoatomic cation channel activity / serotonin-activated cation-selective channel complex / serotonin receptor signaling pathway / serotonin binding / inorganic cation transmembrane transport / excitatory extracellular ligand-gated monoatomic ion channel activity / cleavage furrow / transmembrane transporter complex / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential ...Neurotransmitter receptors and postsynaptic signal transmission / serotonin-gated monoatomic cation channel activity / serotonin-activated cation-selective channel complex / serotonin receptor signaling pathway / serotonin binding / inorganic cation transmembrane transport / excitatory extracellular ligand-gated monoatomic ion channel activity / cleavage furrow / transmembrane transporter complex / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / presynaptic membrane / postsynaptic membrane / neuron projection / axon / neuronal cell body / glutamatergic synapse / synapse / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Mus musculus (ハツカネズミ) | ||||||
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: 3.5 Å | ||||||
データ登録者 | Introini, B. / Kudryashev, M. | ||||||
資金援助 | ドイツ, 1件
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引用 | ジャーナル: EMBO J / 年: 2024 タイトル: Structure of tetrameric forms of the serotonin-gated 5-HT3 receptor ion channel. 著者: Bianca Introini / Wenqiang Cui / Xiaofeng Chu / Yingyi Zhang / Ana Catarina Alves / Luise Eckhardt-Strelau / Sabrina Golusik / Menno Tol / Horst Vogel / Shuguang Yuan / Mikhail Kudryashev / 要旨: Multimeric membrane proteins are produced in the endoplasmic reticulum and transported to their target membranes which, for ion channels, is typically the plasma membrane. Despite the availability of ...Multimeric membrane proteins are produced in the endoplasmic reticulum and transported to their target membranes which, for ion channels, is typically the plasma membrane. Despite the availability of many fully assembled channel structures, our understanding of assembly intermediates, multimer assembly mechanisms, and potential functions of non-standard assemblies is limited. We demonstrate that the pentameric ligand-gated serotonin 5-HT3A receptor (5-HT3AR) can assemble to tetrameric forms and report the structures of the tetramers in plasma membranes of cell-derived microvesicles and in membrane memetics using cryo-electron microscopy and tomography. The tetrameric structures have near-symmetric transmembrane domains, and asymmetric extracellular domains, and can bind serotonin molecules. Computer simulations, based on our cryo-EM structures, were used to decipher the assembly pathway of pentameric 5-HT3R and suggest a potential functional role for the tetrameric receptors. #1: ジャーナル: Protein Sci / 年: 2018 タイトル: UCSF ChimeraX: Meeting modern challenges in visualization and analysis. 著者: Thomas D Goddard / Conrad C Huang / Elaine C Meng / Eric F Pettersen / Gregory S Couch / John H Morris / Thomas E Ferrin / 要旨: UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and ...UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and disparate types of data attendant with cutting-edge experimental methods, while providing advanced options for high-quality rendering (interactive ambient occlusion, reliable molecular surface calculations, etc.) and professional approaches to software design and distribution. This article highlights some specific advances in the areas of visualization and usability, performance, and extensibility. ChimeraX is free for noncommercial use and is available from http://www.rbvi.ucsf.edu/chimerax/ for Windows, Mac, and Linux. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8c20.cif.gz | 276.6 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8c20.ent.gz | 220.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8c20.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
文書・要旨 | 8c20_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8c20_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8c20_validation.xml.gz | 54.4 KB | 表示 | |
CIF形式データ | 8c20_validation.cif.gz | 81.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/c2/8c20 ftp://data.pdbj.org/pub/pdb/validation_reports/c2/8c20 | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 60668.086 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 遺伝子: Htr3a, 5ht3, Htr3 / 細胞株 (発現宿主): HEK / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P23979 #2: 化合物 | 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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-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 |
-試料調製
構成要素 | 名称: Tetrameric 5-HT3A receptor in Salipro (holo, symmetric) タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 0.220 MDa / 実験値: NO |
由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK cells |
緩衝液 | pH: 7.6 |
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 |
-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 / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1300 nm |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
ソフトウェア | 名称: UCSF ChimeraX / バージョン: 1.4/v9 / 分類: モデル構築 / URL: https://www.rbvi.ucsf.edu/chimerax/ / Os: Windows / タイプ: package | |||||||||||||||||||||
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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 | |||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 296783 / 対称性のタイプ: POINT |