+データを開く
-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+ | ||||||
要素 |
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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 trans-Golgi Network Vesicle Budding / BLOC-1 complex / regulation of delayed rectifier potassium channel activity / myosin head/neck binding / synchronous neurotransmitter secretion / fast, calcium ion-dependent exocytosis of neurotransmitter / positive regulation of calcium ion-dependent exocytosis of neurotransmitter / syntaxin-3 binding / exocytic insertion of neurotransmitter receptor to postsynaptic membrane / Other interleukin signaling ...trans-Golgi Network Vesicle Budding / BLOC-1 complex / regulation of delayed rectifier potassium channel activity / myosin head/neck binding / synchronous neurotransmitter secretion / fast, calcium ion-dependent exocytosis of neurotransmitter / positive regulation of calcium ion-dependent exocytosis of neurotransmitter / syntaxin-3 binding / exocytic insertion of neurotransmitter receptor to postsynaptic membrane / Other interleukin signaling / calcium-dependent activation of synaptic vesicle fusion / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / extrinsic component of presynaptic membrane / regulation of regulated secretory pathway / synaptic vesicle fusion to presynaptic active zone membrane / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / spontaneous neurotransmitter secretion / positive regulation of norepinephrine secretion / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / positive regulation of catecholamine secretion / Acetylcholine Neurotransmitter Release Cycle / Lysosome Vesicle Biogenesis / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / positive regulation of vesicle fusion / chromaffin granule membrane / Dopamine Neurotransmitter Release Cycle / zymogen granule membrane / dense core granule / regulated exocytosis / ribbon synapse / presynaptic dense core vesicle exocytosis / synaptic vesicle docking / Golgi Associated Vesicle Biogenesis / regulation of synaptic vesicle priming / calcium ion sensor activity / storage vacuole / regulation of establishment of protein localization / regulation of calcium ion-dependent exocytosis / response to gravity / vesicle-mediated transport in synapse / positive regulation of calcium ion-dependent exocytosis / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / calcium ion-regulated exocytosis of neurotransmitter / vesicle fusion / eosinophil degranulation / vesicle docking / exocytic vesicle / secretion by cell / SNARE complex / chloride channel inhibitor activity / SNAP receptor activity / positive regulation of dopamine secretion / protein heterooligomerization / regulation of exocytosis / regulation of vesicle-mediated transport / Cargo recognition for clathrin-mediated endocytosis / LGI-ADAM interactions / Clathrin-mediated endocytosis / calcium-ion regulated exocytosis / hormone secretion / actomyosin / positive regulation of intracellular protein transport / Golgi to plasma membrane protein transport / positive regulation of dendrite extension / positive regulation of hormone secretion / neurotransmitter secretion / neurotransmitter receptor internalization / calcium-dependent phospholipid binding / protein localization to membrane / ATP-dependent protein binding / neuron projection terminus / presynaptic cytosol / regulation of synaptic vesicle recycling / insulin secretion / syntaxin binding / neurotransmitter transport / syntaxin-1 binding / clathrin-coated vesicle / SNARE complex assembly / positive regulation of neurotransmitter secretion / Neutrophil degranulation / endosomal transport / regulation of synaptic vesicle exocytosis / synaptic vesicle priming / regulation of synapse assembly / low-density lipoprotein particle receptor binding / postsynaptic cytosol / clathrin binding / myosin binding / regulation of dopamine secretion / regulation of neuron projection development / phosphatidylserine binding / presynaptic active zone / modulation of excitatory postsynaptic potential / exocytosis / synaptic vesicle exocytosis / positive regulation of exocytosis 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 / 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. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-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
文書・要旨 | 6mti_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6mti_full_validation.pdf.gz | 1.7 MB | 表示 | |
XML形式データ | 6mti_validation.xml.gz | 96.2 KB | 表示 | |
CIF形式データ | 6mti_validation.cif.gz | 136.6 KB | 表示 | |
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 |
-関連構造データ
-リンク
-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) Rattus norvegicus (ドブネズミ) / 遺伝子: Syt1 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P21707 #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) Rattus norvegicus (ドブネズミ) / 遺伝子: Syt1 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P21707 |
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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) Rattus norvegicus (ドブネズミ) / 遺伝子: Vamp2, Syb2 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P63045 #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) Rattus norvegicus (ドブネズミ) / 遺伝子: Stx1a, Sap / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P32851 |
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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) Rattus norvegicus (ドブネズミ) / 遺伝子: Snap25, Snap / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P60881 #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) Rattus norvegicus (ドブネズミ) / 遺伝子: Snap25, Snap / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P60881 |
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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 |
-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: Rattus norvegicus (ドブネズミ) |
由来(組換発現) | 生物種: Escherichia coli (大腸菌) |
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 |
-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) |
-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 |