+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7udc | |||||||||||||||||||||
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タイトル | cryo-EM structures of a synaptobrevin-Munc18-1-syntaxin-1 complex class1 | |||||||||||||||||||||
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 / regulation of vesicle fusion / Toxicity of tetanus toxin (tetX) / developmental process involved in reproduction / axon target recognition / Toxicity of botulinum toxin type G (botG) / clathrin-sculpted glutamate transport vesicle membrane ...positive regulation of vesicle docking / regulation of acrosomal vesicle exocytosis / positive regulation of glutamate secretion, neurotransmission / negative regulation of SNARE complex assembly / regulation of vesicle fusion / Toxicity of tetanus toxin (tetX) / developmental process involved in reproduction / axon target recognition / Toxicity of botulinum toxin type G (botG) / clathrin-sculpted glutamate transport vesicle membrane / regulation of delayed rectifier potassium channel activity / Toxicity of botulinum toxin type F (botF) / myosin head/neck binding / Toxicity of botulinum toxin type D (botD) / trans-Golgi Network Vesicle Budding / Other interleukin signaling / Acetylcholine Neurotransmitter Release Cycle / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / extrinsic component of presynaptic membrane / synaptic vesicle fusion to presynaptic active zone membrane / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / Toxicity of botulinum toxin type B (botB) / positive regulation of norepinephrine secretion / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / positive regulation of catecholamine secretion / clathrin-sculpted gamma-aminobutyric acid transport vesicle membrane / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / Dopamine Neurotransmitter Release Cycle / zymogen granule membrane / regulated exocytosis / negative regulation of synaptic transmission, GABAergic / presynaptic dense core vesicle exocytosis / platelet degranulation / GABA synthesis, release, reuptake and degradation / synaptic vesicle docking / regulation of synaptic vesicle priming / clathrin-sculpted monoamine transport vesicle membrane / response to gravity / positive regulation of calcium ion-dependent exocytosis / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / Serotonin Neurotransmitter Release Cycle / synaptic vesicle maturation / vesicle fusion / eosinophil degranulation / neuromuscular synaptic transmission / vesicle docking / Dopamine Neurotransmitter Release Cycle / chloride channel inhibitor activity / Norepinephrine Neurotransmitter Release Cycle / secretion by cell / SNARE complex / SNAP receptor activity / presynaptic active zone cytoplasmic component / Glutamate Neurotransmitter Release Cycle / regulation of exocytosis / positive regulation of mast cell degranulation / regulation of vesicle-mediated transport / LGI-ADAM interactions / calcium-ion regulated exocytosis / hormone secretion / actomyosin / positive regulation of intracellular protein transport / platelet alpha granule / Golgi to plasma membrane protein transport / neurotransmitter secretion / protein localization to membrane / ATP-dependent protein binding / neuron projection terminus / vesicle docking involved in exocytosis / presynaptic cytosol / parallel fiber to Purkinje cell synapse / insulin secretion / long-term synaptic depression / Sensory processing of sound by inner hair cells of the cochlea / neurotransmitter transport / syntaxin binding / syntaxin-1 binding / clathrin-coated vesicle / SNARE complex assembly / positive regulation of neurotransmitter secretion / Lysosome Vesicle Biogenesis / synaptic vesicle priming / Other interleukin signaling / Golgi Associated Vesicle Biogenesis / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / myosin binding / Insulin processing / positive regulation of exocytosis / modulation of excitatory postsynaptic potential / exocytosis / synaptic vesicle exocytosis / phospholipase binding / protein sumoylation / positive regulation of excitatory postsynaptic potential / synaptic vesicle endocytosis / endomembrane system 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | Rattus norvegicus (ドブネズミ) | |||||||||||||||||||||
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: 3.7 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: 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 | 7udc.cif.gz | 200.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7udc.ent.gz | 147 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7udc.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 | 7udc_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7udc_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 7udc_validation.xml.gz | 30.8 KB | 表示 | |
CIF形式データ | 7udc_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/7udc ftp://data.pdbj.org/pub/pdb/validation_reports/ud/7udc | HTTPS FTP |
-関連構造データ
関連構造データ | 26456MC 7udbC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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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) Rattus norvegicus (ドブネズミ) / 遺伝子: Stxbp1, Unc18a / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P61765 |
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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 161-TSEEAADM-168 由来: (組換発現) Rattus norvegicus (ドブネズミ) / 遺伝子: Stx1a, Sap / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P32851 |
#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) Rattus norvegicus (ドブネズミ) / 遺伝子: VAMP2, SYB2 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P63027 |
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 161-TSEEAADM-168 |
-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: 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: Rattus norvegicus (ドブネズミ) |
由来(組換発現) | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
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 |
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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 |
-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: 3.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 331649 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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