+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 7udb | |||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of a synaptobrevin-Munc18-1-syntaxin-1 complex class 2 | |||||||||||||||||||||||||||||||||||||||||||||
![]() |
| |||||||||||||||||||||||||||||||||||||||||||||
![]() | EXOCYTOSIS / Munc18 / syntaxin / synaptobrevin / SNARE / membrane fusion / neurotransmitter release | |||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of vesicle docking / regulation of acrosomal vesicle exocytosis / positive regulation of glutamate secretion, neurotransmission / negative regulation of SNARE complex assembly / developmental process involved in reproduction / axon target recognition / 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 / developmental process involved in reproduction / axon target recognition / exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of vesicle fusion / regulation of delayed rectifier potassium channel activity / myosin head/neck binding / Other interleukin signaling / presynaptic dense core vesicle exocytosis / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / Lysosome Vesicle Biogenesis / regulated exocytosis / Dopamine Neurotransmitter Release Cycle / extrinsic component of presynaptic membrane / positive regulation of norepinephrine secretion / positive regulation of catecholamine secretion / synaptic vesicle docking / negative regulation of synaptic transmission, GABAergic / zymogen granule membrane / regulation of synaptic vesicle priming / Golgi Associated Vesicle Biogenesis / storage vacuole / platelet degranulation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / response to gravity / vesicle-mediated transport in synapse / synaptic vesicle maturation / positive regulation of calcium ion-dependent exocytosis / vesicle docking / eosinophil degranulation / presynaptic active zone cytoplasmic component / regulation of exocytosis / secretion by cell / SNAP receptor activity / SNARE complex / chloride channel inhibitor activity / vesicle fusion / positive regulation of mast cell degranulation / regulation of vesicle-mediated transport / calcium-ion regulated exocytosis / Cargo recognition for clathrin-mediated endocytosis / LGI-ADAM interactions / Clathrin-mediated endocytosis / actomyosin / positive regulation of intracellular protein transport / hormone secretion / neuromuscular synaptic transmission / platelet alpha granule / Golgi to plasma membrane protein transport / neurotransmitter secretion / ATP-dependent protein binding / neuron projection terminus / vesicle docking involved in exocytosis / protein localization to membrane / syntaxin binding / regulation of synaptic vesicle recycling / syntaxin-1 binding / long-term synaptic depression / clathrin-coated vesicle / insulin secretion / SNARE complex assembly / positive regulation of neurotransmitter secretion / neurotransmitter transport / synaptic vesicle priming / myosin binding / parallel fiber to Purkinje cell synapse / exocytosis / phospholipase binding / modulation of excitatory postsynaptic potential / positive regulation of exocytosis / synaptic vesicle exocytosis / protein sumoylation / synaptic vesicle endocytosis / postsynaptic cytosol / positive regulation of excitatory postsynaptic potential / negative regulation of protein-containing complex assembly / presynaptic cytosol / calcium channel inhibitor activity / response to glucose / vesicle-mediated transport / phagocytic vesicle / presynaptic active zone membrane / endomembrane system / cytoplasmic vesicle membrane / SNARE binding / acrosomal vesicle / secretory granule / protein localization to plasma membrane / establishment of localization in cell 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 | |||||||||||||||||||||||||||||||||||||||||||||
![]() | Rizo, J. / Bai, X. / Stepien, K.P. / Xu, J. / Zhang, X. | |||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
| |||||||||||||||||||||||||||||||||||||||||||||
![]() | ![]() 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 |
|
-
構造の表示
構造ビューア | 分子: ![]() ![]() |
---|
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 197.2 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 144.7 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | 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 ( |
---|---|
類似構造データ | 類似検索 - 機能・相同性 ![]() |
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 |
|
-
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) ![]() ![]() ![]() ![]() |
---|---|
#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 |
---|---|
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: 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 |
---|---|
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 |
-
電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
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 |
-
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 | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EMソフトウェア |
| ||||||||||||||||||||||||
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 |
|