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基本情報
登録情報 | ![]() | |||||||||||||||||||||
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タイトル | cryo-EM structures of a synaptobrevin-Munc18-1-syntaxin-1 complex class1 | |||||||||||||||||||||
![]() | cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2 | |||||||||||||||||||||
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![]() | Munc18 / syntaxin / synaptobrevin / SNARE / membrane fusion / neurotransmitter release / EXOCYTOSIS | |||||||||||||||||||||
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 / Toxicity of tetanus toxin (tetX) / Toxicity of botulinum toxin type G (botG) / clathrin-sculpted glutamate transport vesicle membrane / regulation of vesicle fusion ...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 / Toxicity of tetanus toxin (tetX) / Toxicity of botulinum toxin type G (botG) / clathrin-sculpted glutamate transport vesicle membrane / regulation of vesicle fusion / regulation of delayed rectifier potassium channel activity / Toxicity of botulinum toxin type F (botF) / Toxicity of botulinum toxin type D (botD) / trans-Golgi Network Vesicle Budding / Toxicity of botulinum toxin type B (botB) / negative regulation of synaptic transmission, GABAergic / clathrin-sculpted gamma-aminobutyric acid transport vesicle membrane / myosin head/neck binding / GABA synthesis, release, reuptake and degradation / zymogen granule membrane / Acetylcholine Neurotransmitter Release Cycle / platelet degranulation / Other interleukin signaling / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / presynaptic dense core vesicle exocytosis / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / clathrin-sculpted monoamine transport vesicle membrane / extrinsic component of presynaptic membrane / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / synaptic vesicle maturation / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / positive regulation of norepinephrine secretion / positive regulation of catecholamine secretion / regulated exocytosis / Dopamine Neurotransmitter Release Cycle / synaptic vesicle docking / eosinophil degranulation / regulation of synaptic vesicle priming / presynaptic active zone cytoplasmic component / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / positive regulation of intracellular protein transport / Dopamine Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / positive regulation of calcium ion-dependent exocytosis / vesicle docking / regulation of vesicle-mediated transport / positive regulation of mast cell degranulation / secretion by cell / regulation of exocytosis / Glutamate Neurotransmitter Release Cycle / SNAP receptor activity / chloride channel inhibitor activity / SNARE complex / vesicle fusion / platelet alpha granule / neuromuscular synaptic transmission / calcium-ion regulated exocytosis / actomyosin / LGI-ADAM interactions / hormone secretion / Golgi to plasma membrane protein transport / neuron projection terminus / ATP-dependent protein binding / neurotransmitter secretion / vesicle docking involved in exocytosis / long-term synaptic depression / protein localization to membrane / syntaxin binding / clathrin-coated vesicle / Sensory processing of sound by inner hair cells of the cochlea / syntaxin-1 binding / insulin secretion / Other interleukin signaling / SNARE complex assembly / positive regulation of neurotransmitter secretion / Lysosome Vesicle Biogenesis / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / synaptic vesicle priming / Golgi Associated Vesicle Biogenesis / neurotransmitter transport / Insulin processing / response to gravity / parallel fiber to Purkinje cell synapse / myosin binding / 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 / negative regulation of protein-containing complex assembly / phospholipase binding / calcium channel inhibitor activity 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | ![]() ![]() | |||||||||||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.7 Å | |||||||||||||||||||||
![]() | Rizo J / Bai X / Stepien KP / Xu J / Zhang X | |||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() 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
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 14.8 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 24.2 KB 24.2 KB | 表示 表示 | ![]() |
画像 | ![]() | 140.6 KB | ||
Filedesc metadata | ![]() | 7.4 KB | ||
その他 | ![]() ![]() | 17 MB 17 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 727.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 727.2 KB | 表示 | |
XML形式データ | ![]() | 10.1 KB | 表示 | |
CIF形式データ | ![]() | 11.8 KB | 表示 | |
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 | ![]() 7udcMC ![]() 7udbC M: このマップから作成された原子モデル 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 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2 | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2,...
ファイル | emd_26456_half_map_1.map | ||||||||||||
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注釈 | cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2, unfiltered half map 1 | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2,...
ファイル | emd_26456_half_map_2.map | ||||||||||||
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注釈 | cryo-EM map of a synaptobrevin-Munc18-1-syntaxin-1 complex, conformation 2, unfiltered half map 2 | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : ternary complex of Munc18-1 bound to syntaxin-1A and a SNARE moti...
全体 | 名称: ternary complex of Munc18-1 bound to syntaxin-1A and a SNARE motif of synaptobrevin 2 |
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要素 |
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-超分子 #1: ternary complex of Munc18-1 bound to syntaxin-1A and a SNARE moti...
超分子 | 名称: ternary complex of Munc18-1 bound to syntaxin-1A and a SNARE motif of synaptobrevin 2 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() ![]() |
-分子 #1: Syntaxin-binding protein 1
分子 | 名称: Syntaxin-binding protein 1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 68.714883 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: GSPGISGGGG GIHMAPIGLK AVVGEKIMHD VIKKVKKKGE WKVLVVDQLS MRMLSSCCKM TDIMTEGITI VEDINKRREP LPSLEAVYL ITPSEKSVHS LISDFKDPPT AKYRAAHVFF TDSCPDALFN ELVKSRAAKV IKTLTEINIA FLPYESQVYS L DSADSFQS ...文字列: GSPGISGGGG GIHMAPIGLK AVVGEKIMHD VIKKVKKKGE WKVLVVDQLS MRMLSSCCKM TDIMTEGITI VEDINKRREP LPSLEAVYL ITPSEKSVHS LISDFKDPPT AKYRAAHVFF TDSCPDALFN ELVKSRAAKV IKTLTEINIA FLPYESQVYS L DSADSFQS FYSPHKAQMK NPILERLAEQ IATLCATLKE YPAVRYRGEY KDNALLAQLI QDKLDAYKAD DPTMGEGPDK AR SQLLILD RGFDPSSPVL HELTFQAMSY DLLPIENDVY KYETSGIGEA RVKEVLLDED DDLWIALRHK HIAEVSQEVT RSL KDFSSS KRMNTGEKTT MRKLSQMLKK MPQYQKELSK YSTHLHLAED CMKHYQGTVD KLCRVEQDLA MGTDAEGEKI KDPM RAIVP ILLDANVSTY DKIRIILLYI FLKNGITEEN LNKLIQHAQI PPEDSEIITN MAHLGVPIVT DSTLRRRSKP ERKER ISEQ TYQLSRWTPI IKDIMEDTIE DKLDTKHYPY ISTRSSASFS TTAVSARYGH WHKNKAPGEY RSGPRLIIFI LGGVSL NEM RCAYEVTQAN GKWEVLIGST HILTPQKLLD TLKKLNKTDE EISS UniProtKB: Syntaxin-binding protein 1 |
-分子 #2: Syntaxin-1A
分子 | 名称: Syntaxin-1A / タイプ: protein_or_peptide / ID: 2 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 コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 29.221541 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: GSKDRTQELR TAKDSDDDDD VTVTVDRDRF MDEFFEQVEE IRGFIDKIAE NVEEVKRKHS AILASPNPDE KTKEELEELM SDIKKTANK VRSKLKSIEQ SIEQEEGLNR SSADLRIRKT QHSTLSRKFV EVMSEYNATQ SDYRERAKGR IQRQLEITGR T TTSEEAAD ...文字列: GSKDRTQELR TAKDSDDDDD VTVTVDRDRF MDEFFEQVEE IRGFIDKIAE NVEEVKRKHS AILASPNPDE KTKEELEELM SDIKKTANK VRSKLKSIEQ SIEQEEGLNR SSADLRIRKT QHSTLSRKFV EVMSEYNATQ SDYRERAKGR IQRQLEITGR T TTSEEAAD MLESGNPAIF ASGIIMDSSI SKQALSEIET RHSEIIKCEN SIRELHDMFM DMAMLVESQG EMIDRIEYNV EH AVDYVER AVSDTKK UniProtKB: Syntaxin-1A |
-分子 #3: Synaptobrevin-2
分子 | 名称: Synaptobrevin-2 / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 6.645386 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: GSMWNRRLQQ TCAQVDEVVD IMRVNVDKVL ERDQKLSELD DRADALQAGA SQFETSAAK UniProtKB: Vesicle-associated membrane protein 2 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 7.5 mg/mL |
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緩衝液 | pH: 7 |
グリッド | モデル: Quantifoil R1.2/1.3 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | 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 |
撮影 | フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) 検出モード: SUPER-RESOLUTION / 実像数: 7401 / 平均電子線量: 60.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.6 µm / 最小 デフォーカス(公称値): 1.6 µm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |