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基本情報
登録情報 | データベース: PDB / ID: 8v8t | |||||||||||||||
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タイトル | Asymmetrical subunit from a Drp1 lattice on PA nanotubes | |||||||||||||||
![]() | Dynamin-1-like protein | |||||||||||||||
![]() | HYDROLASE / membrane remodeling GTPase | |||||||||||||||
機能・相同性 | ![]() mitochondrial membrane fission / regulation of ATP metabolic process / regulation of peroxisome organization / mitocytosis / dynamin GTPase / Apoptotic execution phase / mitochondrial fragmentation involved in apoptotic process / regulation of mitophagy / peroxisome fission / GTP-dependent protein binding ...mitochondrial membrane fission / regulation of ATP metabolic process / regulation of peroxisome organization / mitocytosis / dynamin GTPase / Apoptotic execution phase / mitochondrial fragmentation involved in apoptotic process / regulation of mitophagy / peroxisome fission / GTP-dependent protein binding / protein localization to mitochondrion / mitochondrial fission / positive regulation of neutrophil chemotaxis / positive regulation of mitochondrial fission / heart contraction / intracellular distribution of mitochondria / protein complex oligomerization / brush border / clathrin-coated pit / GTPase activator activity / positive regulation of protein secretion / mitochondrion organization / small GTPase binding / synaptic vesicle membrane / endocytosis / calcium ion transport / rhythmic process / peroxisome / regulation of gene expression / microtubule binding / microtubule / mitochondrial outer membrane / GTPase activity / intracellular membrane-bounded organelle / lipid binding / ubiquitin protein ligase binding / endoplasmic reticulum membrane / GTP binding / perinuclear region of cytoplasm / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / protein-containing complex / mitochondrion / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
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: 14.73 Å | |||||||||||||||
![]() | Rochon, K. / Peng, R. / Hutson, A.N. / Stagg, S.M. / Mears, J.A. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The Structure of the Drp1 Lattice on Membrane. 著者: Ruizhi Peng / Kristy Rochon / Anelise N Hutson / Scott M Stagg / Jason A Mears / ![]() 要旨: Mitochondrial health relies on the membrane fission mediated by dynamin-related protein 1 (Drp1). Previous structural studies of Drp1 on remodeled membranes were hampered by heterogeneity, leaving a ...Mitochondrial health relies on the membrane fission mediated by dynamin-related protein 1 (Drp1). Previous structural studies of Drp1 on remodeled membranes were hampered by heterogeneity, leaving a critical gap in the understanding of the mitochondrial fission mechanisms. Here we present a cryo-electron microscopy structure of full-length human Drp1 decorated on membrane tubules. Using the reconstruction of average subtracted tubular regions (RASTR) technique, we report that Drp1 forms a locally ordered lattice along the tubule without global helical symmetry. The filaments in the lattice are similar to dynamin rungs with conserved stalk interactions. Adjacent filaments are connected by GTPase domain interactions in a novel stacked conformation. We identified two states of the Drp1 lattice among the heterogenous dataset representing conformational changes around hinge 1. Additionally, we observed contact between Drp1 and membrane that can be assigned to the variable domain sequence. Together these structures revealed a putative mechanism by which Drp1 constricts mitochondria membranes in a stepwise, "ratchet" manner. | |||||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 966.9 KB | 表示 | ![]() |
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-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 43045MC 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 ( |
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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
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 82608.789 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() Has protein modification | N | |
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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: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Tetramer complex of Drp1 from a lattice / タイプ: COMPLEX 詳細: Asymmetrical subunit of GMP-PCP bound Drp1 lattice on Phosphatidic acid (PA)-containing nanotubes Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||||||||||||
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分子量 | 値: 0.164 MDa / 実験値: NO | |||||||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | |||||||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | |||||||||||||||||||||||||||||||||||
緩衝液 | pH: 7.5 詳細: Primary Buffer: 25 mM HEPES (KOH) pH 7.5, 0.15 M KCl, 5 mM MgCl2, 10 mM Beta-mercaptoethanol Nanotubes: 40% D-galactosyl-beta-1-N-nervonyl-erythro-sphingosine (GC), 35% ...詳細: Primary Buffer: 25 mM HEPES (KOH) pH 7.5, 0.15 M KCl, 5 mM MgCl2, 10 mM Beta-mercaptoethanol Nanotubes: 40% D-galactosyl-beta-1-N-nervonyl-erythro-sphingosine (GC), 35% phosphatidylethanolamine (PE), 25% phosphatidic acid (PA) Final Sample: Protein diluted to 0.4mg/ml and incubated with 500 uM NTs, 2mM GMPPCP and 2mM MgCl2 | |||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.4 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Drp1 was incubated with nanotubes and GMPPCP to form decorated lipid templates | |||||||||||||||||||||||||||||||||||
試料支持 | 詳細: 25mA / グリッドの材料: COPPER / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R3.5/1 | |||||||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm |
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 | 平均露光時間: 1.093 sec. / 電子線照射量: 58.49 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: DIRECT ELECTRON DE-64 (8k x 8k) 実像数: 1941 |
画像スキャン | 動画フレーム数/画像: 35 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 14.73 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 13215 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT | ||||||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 617.47 Å2 | ||||||||||||||||||||||||||||
拘束条件 |
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