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基本情報
| 登録情報 | データベース: PDB / ID: 6mti | ||||||
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| タイトル | Synaptotagmin-1 C2A, C2B domains and SNARE-pin proteins (5CCI) individually docked into Cryo-EM map of C2AB-SNARE complexes helically organized on lipid nanotube surface in presence of Mg2+ | ||||||
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キーワード | EXOCYTOSIS / SNARE / lipid nanotubes | ||||||
| 機能・相同性 | 機能・相同性情報exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / regulation of vesicle fusion / synchronous neurotransmitter secretion / fast, calcium ion-dependent exocytosis of neurotransmitter / syntaxin-3 binding / regulation of calcium-dependent activation of synaptic vesicle fusion / vesicle targeting / calcium activated phospholipid scrambling ...exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / regulation of vesicle fusion / synchronous neurotransmitter secretion / fast, calcium ion-dependent exocytosis of neurotransmitter / syntaxin-3 binding / regulation of calcium-dependent activation of synaptic vesicle fusion / vesicle targeting / calcium activated phospholipid scrambling / spontaneous neurotransmitter secretion / regulation of regulated secretory pathway / BLOC-1 complex / calcium-dependent activation of synaptic vesicle fusion / myosin head/neck binding / chromaffin granule membrane / Lysosome Vesicle Biogenesis / zymogen granule membrane / positive regulation of calcium ion-dependent exocytosis of neurotransmitter / positive regulation of glutamate secretion, neurotransmission / synaptic vesicle fusion to presynaptic active zone membrane / storage vacuole / Other interleukin signaling / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptic vesicle recycling / synaptobrevin 2-SNAP-25-syntaxin-1a complex / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / presynaptic dense core vesicle exocytosis / extrinsic component of presynaptic membrane / calcium ion-regulated exocytosis of neurotransmitter / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / Acetylcholine Neurotransmitter Release Cycle / regulation of calcium ion-dependent exocytosis / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / positive regulation of catecholamine secretion / positive regulation of norepinephrine secretion / Dopamine Neurotransmitter Release Cycle / calcium ion sensor activity / synaptic vesicle docking / eosinophil degranulation / regulation of synaptic vesicle priming / regulated exocytosis / Golgi Associated Vesicle Biogenesis / vesicle-mediated transport in synapse / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / short-term synaptic potentiation / regulation of establishment of protein localization / exocytic vesicle / SNARE complex disassembly / positive regulation of calcium ion-dependent exocytosis / protein heterooligomerization / ribbon synapse / vesicle organization / positive regulation of intracellular protein transport / regulation of vesicle-mediated transport / vesicle docking / positive regulation of vesicle fusion / chloride channel inhibitor activity / positive regulation of dendrite extension / secretion by cell / Cargo recognition for clathrin-mediated endocytosis / calcium-ion regulated exocytosis / Clathrin-mediated endocytosis / SNARE complex / regulation of exocytosis / SNAP receptor activity / vesicle fusion / actomyosin / positive regulation of dopamine secretion / negative regulation of neurotransmitter secretion / hormone secretion / LGI-ADAM interactions / calcium-dependent phospholipid binding / dense core granule / positive regulation of synaptic plasticity / positive regulation of hormone secretion / xenobiotic transmembrane transport / Golgi to plasma membrane protein transport / membraneless organelle assembly / response to cholesterol / ATP-dependent protein binding / neurotransmitter secretion / presynaptic active zone / clathrin-coated vesicle / regulation of synaptic vesicle cycle / syntaxin binding / protein localization to membrane / syntaxin-1 binding / Neutrophil degranulation / insulin secretion / regulation of synaptic vesicle recycling / endosomal transport / low-density lipoprotein particle receptor binding / clathrin binding / phosphatidylserine binding / myosin binding / regulation of synapse assembly / inhibitory postsynaptic potential 類似検索 - 分子機能 | ||||||
| 生物種 | ![]() | ||||||
| 手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 10.4 Å | ||||||
データ登録者 | Grushin, K. / Wang, J. / Coleman, J. / Rothman, J. / Sindelar, C. / Krishnakumar, S. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2019タイトル: Structural basis for the clamping and Ca activation of SNARE-mediated fusion by synaptotagmin. 著者: Kirill Grushin / Jing Wang / Jeff Coleman / James E Rothman / Charles V Sindelar / Shyam S Krishnakumar / ![]() 要旨: Synapotagmin-1 (Syt1) interacts with both SNARE proteins and lipid membranes to synchronize neurotransmitter release to calcium (Ca) influx. Here we report the cryo-electron microscopy structure of ...Synapotagmin-1 (Syt1) interacts with both SNARE proteins and lipid membranes to synchronize neurotransmitter release to calcium (Ca) influx. Here we report the cryo-electron microscopy structure of the Syt1-SNARE complex on anionic-lipid containing membranes. Under resting conditions, the Syt1 C2 domains bind the membrane with a magnesium (Mg)-mediated partial insertion of the aliphatic loops, alongside weak interactions with the anionic lipid headgroups. The C2B domain concurrently interacts the SNARE bundle via the 'primary' interface and is positioned between the SNAREpins and the membrane. In this configuration, Syt1 is projected to sterically delay the complete assembly of the associated SNAREpins and thus, contribute to clamping fusion. This Syt1-SNARE organization is disrupted upon Ca-influx as Syt1 reorients into the membrane, likely displacing the attached SNAREpins and reversing the fusion clamp. We thus conclude that the cation (Mg/Ca) dependent membrane interaction is a key determinant of the dual clamp/activator function of Synaptotagmin-1. | ||||||
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構造の表示
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| 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 | 6mti.cif.gz | 574.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb6mti.ent.gz | 473.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6mti.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mt/6mti ftp://data.pdbj.org/pub/pdb/validation_reports/mt/6mti | HTTPS FTP |
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-関連構造データ
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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
-Synaptotagmin- ... , 2種, 6分子 162345
| #1: タンパク質 | 分子量: 14654.769 Da / 分子数: 2 / 断片: C2A domain, residues 141-267 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: タンパク質 | 分子量: 32247.197 Da / 分子数: 4 / 断片: C2A and C2B domains, residues 141-421 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-タンパク質 , 2種, 12分子 AEIMQUBFJNRV
| #3: タンパク質 | 分子量: 7231.061 Da / 分子数: 6 / 断片: residues 28-89 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #4: タンパク質 | 分子量: 7837.957 Da / 分子数: 6 / 断片: residues 191-256 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-Synaptosomal-associated protein ... , 2種, 12分子 CGKOSWDHLPTX
| #5: タンパク質 | 分子量: 9030.114 Da / 分子数: 6 / 断片: residues 7-83 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #6: タンパク質 | 分子量: 7471.368 Da / 分子数: 6 / 断片: residues 141-204 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-非ポリマー , 1種, 10分子 
| #7: 化合物 | ChemComp-MG / |
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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: HELICAL ARRAY / 3次元再構成法: らせん対称体再構成法 |
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試料調製
| 構成要素 | 名称: Synaptotagmin-1 C2A and C2B domains in the complex with SNARE proteins on the surface of lipid membrane nanotube タイプ: COMPLEX / Entity ID: #1-#6 / 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: 7.4 |
| 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 |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Tecnai F20 / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TECNAI F20 |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD |
| 撮影 | 電子線照射量: 44 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
| EMソフトウェア | 名称: Situs / カテゴリ: モデルフィッティング |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| らせん対称 | 回転角度/サブユニット: 78.48 ° / 軸方向距離/サブユニット: 7.3 Å / らせん対称軸の対称性: C1 |
| 3次元再構成 | 解像度: 10.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 2082 / 対称性のタイプ: HELICAL |
| 原子モデル構築 | プロトコル: RIGID BODY FIT |
| 原子モデル構築 | PDB-ID: 5CCI Accession code: 5CCI / Source name: PDB / タイプ: experimental model |
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万見について






米国, 1件
引用
UCSF Chimera





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