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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: 7udb | |||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of a synaptobrevin-Munc18-1-syntaxin-1 complex class 2 | |||||||||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | EXOCYTOSIS / Munc18 / syntaxin / synaptobrevin / SNARE / membrane fusion / neurotransmitter release | |||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報positive regulation of vesicle docking / regulation of acrosomal vesicle exocytosis / positive regulation of glutamate secretion, neurotransmission / negative regulation of SNARE complex assembly / axon target recognition / developmental process involved in reproduction / exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of vesicle fusion / regulation of delayed rectifier potassium channel activity ...positive regulation of vesicle docking / regulation of acrosomal vesicle exocytosis / positive regulation of glutamate secretion, neurotransmission / negative regulation of SNARE complex assembly / axon target recognition / developmental process involved in reproduction / exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of vesicle fusion / regulation of delayed rectifier potassium channel activity / negative regulation of synaptic transmission, GABAergic / Lysosome Vesicle Biogenesis / myosin head/neck binding / zymogen granule membrane / storage vacuole / Other interleukin signaling / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / platelet degranulation / presynaptic dense core vesicle exocytosis / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / extrinsic component of presynaptic membrane / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / synaptic vesicle maturation / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / positive regulation of norepinephrine secretion / positive regulation of catecholamine secretion / Dopamine Neurotransmitter Release Cycle / synaptic vesicle docking / eosinophil degranulation / Golgi Associated Vesicle Biogenesis / regulation of synaptic vesicle priming / regulated exocytosis / presynaptic active zone cytoplasmic component / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / vesicle-mediated transport in synapse / positive regulation of intracellular protein transport / positive regulation of calcium ion-dependent exocytosis / regulation of vesicle-mediated transport / positive regulation of mast cell degranulation / vesicle docking / Cargo recognition for clathrin-mediated endocytosis / regulation of exocytosis / secretion by cell / chloride channel inhibitor activity / Clathrin-mediated endocytosis / platelet alpha granule / SNARE complex / SNAP receptor activity / calcium-ion regulated exocytosis / neuromuscular synaptic transmission / vesicle fusion / actomyosin / hormone secretion / LGI-ADAM interactions / neuron projection terminus / Golgi to plasma membrane protein transport / ATP-dependent protein binding / neurotransmitter secretion / vesicle docking involved in exocytosis / long-term synaptic depression / protein localization to membrane / clathrin-coated vesicle / syntaxin binding / regulation of synaptic vesicle recycling / insulin secretion / syntaxin-1 binding / SNARE complex assembly / positive regulation of neurotransmitter secretion / neurotransmitter transport / myosin binding / synaptic vesicle priming / parallel fiber to Purkinje cell synapse / response to gravity / exocytosis / modulation of excitatory postsynaptic potential / positive regulation of exocytosis / synaptic vesicle exocytosis / protein sumoylation / synaptic vesicle endocytosis / positive regulation of excitatory postsynaptic potential / response to glucose / postsynaptic cytosol / negative regulation of protein-containing complex assembly / calcium channel inhibitor activity / phospholipase binding / presynaptic cytosol / phagocytic vesicle / vesicle-mediated transport / presynaptic active zone membrane / endomembrane system / acrosomal vesicle / cytoplasmic vesicle membrane / secretory granule / SNARE binding / protein localization to plasma membrane / intracellular protein transport 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||||||||
| 生物種 | ![]() | |||||||||||||||||||||||||||||||||||||||||||||
| 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 | Rizo, J. / Bai, X. / Stepien, K.P. / Xu, J. / Zhang, X. | |||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 米国, 6件
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引用 | ジャーナル: Sci Adv / 年: 2022タイトル: SNARE assembly enlightened by cryo-EM structures of a synaptobrevin-Munc18-1-syntaxin-1 complex. 著者: Karolina P Stepien / Junjie Xu / Xuewu Zhang / Xiao-Chen Bai / Josep Rizo / ![]() 要旨: Munc18-1 forms a template to organize assembly of the neuronal SNARE complex that triggers neurotransmitter release, binding first to a closed conformation of syntaxin-1 where its amino-terminal ...Munc18-1 forms a template to organize assembly of the neuronal SNARE complex that triggers neurotransmitter release, binding first to a closed conformation of syntaxin-1 where its amino-terminal region interacts with the SNARE motif, and later binding to synaptobrevin. However, the mechanism of SNARE complex assembly remains unclear. Here, we report two cryo-EM structures of Munc18-1 bound to cross-linked syntaxin-1 and synaptobrevin. The structures allow visualization of how syntaxin-1 opens and reveal how part of the syntaxin-1 amino-terminal region can help nucleate interactions between the amino termini of the syntaxin-1 and synaptobrevin SNARE motifs, while their carboxyl termini bind to distal sites of Munc18-1. These observations, together with mutagenesis, SNARE complex assembly experiments, and fusion assays with reconstituted proteoliposomes, support a model whereby these interactions are critical to initiate SNARE complex assembly and multiple energy barriers enable diverse mechanisms for exquisite regulation of neurotransmitter release. | |||||||||||||||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 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 | 7udb.cif.gz | 197.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7udb.ent.gz | 144.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7udb.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 | 7udb_validation.pdf.gz | 1022.5 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 7udb_full_validation.pdf.gz | 1 MB | 表示 | |
| XML形式データ | 7udb_validation.xml.gz | 30.4 KB | 表示 | |
| CIF形式データ | 7udb_validation.cif.gz | 44.6 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ud/7udb ftp://data.pdbj.org/pub/pdb/validation_reports/ud/7udb | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 26455MC ![]() 7udcC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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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
| #1: タンパク質 | 分子量: 68714.883 Da / 分子数: 1 / 変異: D326K / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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| #2: タンパク質 | 分子量: 29221.541 Da / 分子数: 1 / 変異: C145A,L165A,E166A,L205C / 由来タイプ: 組換発現 詳細: An 8 residue polyalanine stretch was modeled between I149 and A178 of chain B entity Syntaxin-1A. Side chains in this region were not visible and residue numbers are tentative. While ...詳細: An 8 residue polyalanine stretch was modeled between I149 and A178 of chain B entity Syntaxin-1A. Side chains in this region were not visible and residue numbers are tentative. While processing in OneDep the polyalanine sequence was updated to 162-SEEAADML-169 由来: (組換発現) ![]() ![]() |
| #3: タンパク質 | 分子量: 6645.386 Da / 分子数: 1 / 変異: Q36C / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
| Has protein modification | Y |
| 配列の詳細 | An 8 residue polyalanine stretch was modeled between I149 and A178 of chain B entity Syntaxin-1A. ...An 8 residue polyalanine stretch was modeled between I149 and A178 of chain B entity Syntaxin-1A. Side chains in this region were not visible and residue numbers are tentative. While processing in OneDep the polyalanine sequence was updated to 162-SEEAADML-169 |
-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 | 名称: ternary complex of Munc18-1 bound to syntaxin-1A and a SNARE motif of synaptobrevin 2 タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7 |
| 試料 | 濃度: 7.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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 / 最大 デフォーカス(公称値): 2600 nm / 最小 デフォーカス(公称値): 1600 nm / アライメント法: COMA FREE |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 60 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) 実像数: 7401 |
| 電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
| 画像スキャン | 動画フレーム数/画像: 30 |
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解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.19.1_4122: / 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 | ||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 5819182 | ||||||||||||||||||||||||
| 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: 345463 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 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






米国, 6件
引用


PDBj


gel filtration

