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- EMDB-33414: Cryo-EM structure of Arf6 helical polymer assembled on lipid membrane -
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Cryo-EM structure of Arf6 helical polymer assembled on lipid membrane | |||||||||
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![]() | small GTPase / helical polymer / membrane tubulation / LIPID BINDING PROTEIN | |||||||||
機能・相同性 | ![]() erythrocyte apoptotic process / maintenance of postsynaptic density structure / protein localization to cleavage furrow / positive regulation of mitotic cytokinetic process / negative regulation of dendrite development / establishment of epithelial cell polarity / regulation of dendritic spine development / regulation of Rac protein signal transduction / protein localization to endosome / negative regulation of protein localization to cell surface ...erythrocyte apoptotic process / maintenance of postsynaptic density structure / protein localization to cleavage furrow / positive regulation of mitotic cytokinetic process / negative regulation of dendrite development / establishment of epithelial cell polarity / regulation of dendritic spine development / regulation of Rac protein signal transduction / protein localization to endosome / negative regulation of protein localization to cell surface / negative regulation of receptor-mediated endocytosis / ruffle assembly / positive regulation of keratinocyte migration / positive regulation of focal adhesion disassembly / regulation of filopodium assembly / endocytic recycling / MET receptor recycling / thioesterase binding / Flemming body / filopodium membrane / protein localization to cell surface / TBC/RABGAPs / cortical actin cytoskeleton organization / positive regulation of actin filament polymerization / hepatocyte apoptotic process / cleavage furrow / synaptic vesicle endocytosis / endocytic vesicle / regulation of presynapse assembly / vesicle-mediated transport / ruffle / signaling adaptor activity / liver development / small monomeric GTPase / protein localization to plasma membrane / positive regulation of protein secretion / positive regulation of protein localization to plasma membrane / intracellular protein transport / cellular response to nerve growth factor stimulus / positive regulation of neuron projection development / recycling endosome membrane / GDP binding / nervous system development / presynapse / Clathrin-mediated endocytosis / G protein activity / midbody / cell cortex / early endosome membrane / cell differentiation / postsynapse / endosome / cell adhesion / cell division / focal adhesion / GTPase activity / GTP binding / glutamatergic synapse / Golgi apparatus / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.9 Å | |||||||||
![]() | Pang XY / Zhang Y / Sun F | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural elucidation of how ARF small GTPases induce membrane tubulation for vesicle fission. 著者: Xiaoyun Pang / Yan Zhang / Kunyou Park / Zhenyu Liao / Jian Li / Jiashu Xu / Minh-Triet Hong / Guoliang Yin / Tongming Zhang / Yaoyu Wang / Edward H Egelman / Jun Fan / Victor W Hsu / Seung- ...著者: Xiaoyun Pang / Yan Zhang / Kunyou Park / Zhenyu Liao / Jian Li / Jiashu Xu / Minh-Triet Hong / Guoliang Yin / Tongming Zhang / Yaoyu Wang / Edward H Egelman / Jun Fan / Victor W Hsu / Seung-Yeol Park / Fei Sun / ![]() ![]() ![]() 要旨: ADP-Ribosylation Factor (ARF) small GTPases have been found to act in vesicle fission through a direct ability to tubulate membrane. We have pursued cryoelectron microscopy (EM) to reveal at 3.9 Å ...ADP-Ribosylation Factor (ARF) small GTPases have been found to act in vesicle fission through a direct ability to tubulate membrane. We have pursued cryoelectron microscopy (EM) to reveal at 3.9 Å resolution how ARF6 assembles into a protein lattice on tubulated membrane. Molecular dynamics simulation studies confirm and extend the cryo-EM findings. The ARF6 lattice exhibits features that are distinct from those formed by other membrane-bending proteins. We identify protein contacts critical for lattice assembly and how membrane insertion results in constricted tubules. The lattice structure also enables docking by GTPase-activating proteins (GAP) to achieve vesiculation. We have also modeled ARF1 onto the ARF6 lattice, and then pursued vesicle reconstitution by the Coat Protein I (COPI) complex to further confirm that the ARF lattice acts in vesicle fission. By elucidating how an ARF protein tubulates membrane at the structural level, we have advanced the molecular understanding of how this class of transport factors promote the fission stage of vesicle formation. | |||||||||
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マップデータ | ![]() | 201.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 12.9 KB 12.9 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 13.6 KB | 表示 | ![]() |
画像 | ![]() | 325.7 KB | ||
Filedesc metadata | ![]() | 5.7 KB | ||
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 | ![]() 7xrdMC 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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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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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: 1.1 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
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試料の構成要素
-全体 : Arf6 helical polymer assembled on lipid membrane
全体 | 名称: Arf6 helical polymer assembled on lipid membrane |
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要素 |
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-超分子 #1: Arf6 helical polymer assembled on lipid membrane
超分子 | 名称: Arf6 helical polymer assembled on lipid membrane / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-分子 #1: ADP-ribosylation factor 6
分子 | 名称: ADP-ribosylation factor 6 / タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 21.050121 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: GKVLSKIFGN KEMRILMLGL DAAGKTTILY KLKLGQSVTT IPTVGFNVET VTYKNVKFNV WDVGGQDKIR PLWRHYYTGT QGLIFVVDC ADRDRIDEAR QELHRIINDR EMRDAIILIF ANKQDLPDAM KPHEIQEKLG LTRIRDRNWY VQPSCATSGD G LYEGLTWL TSNYKSLEHH HHHH UniProtKB: ADP-ribosylation factor 6 |
-分子 #2: MAGNESIUM ION
分子 | 名称: MAGNESIUM ION / タイプ: ligand / ID: 2 / コピー数: 4 / 式: MG |
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分子量 | 理論値: 24.305 Da |
-分子 #3: GUANOSINE-5'-TRIPHOSPHATE
分子 | 名称: GUANOSINE-5'-TRIPHOSPHATE / タイプ: ligand / ID: 3 / コピー数: 4 / 式: GTP |
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分子量 | 理論値: 523.18 Da |
Chemical component information | ![]() ChemComp-GTP: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | らせん対称体再構成法 |
試料の集合状態 | helical array |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 平均電子線量: 50.0 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): 2.2 µm / 最小 デフォーカス(公称値): 1.5 µm / 倍率(公称値): 75000 |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |