- EMDB-1876: Structural basis of substrate shuttling in bovine mitochondrial s... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1876
タイトル
Structural basis of substrate shuttling in bovine mitochondrial supercomplex I1III2IV1 by single particle cryo-EM
マップデータ
3D cryo-EM map of supercomplex B (I1III2IV1) from bovine heart mitochondria
試料
試料: Respiratory supercomplex B (I1III2IV1) composed of complex I, dimeric complex III and complex IV from bovine heart mitochondria
タンパク質・ペプチド: NADH-dehydrogenase
タンパク質・ペプチド: Cytochrome c reductase
タンパク質・ペプチド: Cytochrome c oxidase
タンパク質・ペプチド: Cytochrome c
キーワード
Supercomplex B / mitochondria / respiratory chain / complex I / complex III / complex IV / amphipol A8-35 / random conical tilt
機能・相同性
機能・相同性情報
Release of apoptotic factors from the mitochondria / Formation of apoptosome / Activation of caspases through apoptosome-mediated cleavage / Pyroptosis / Regulation of the apoptosome activity / Transcriptional activation of mitochondrial biogenesis / Detoxification of Reactive Oxygen Species / Complex III assembly / Complex IV assembly / TP53 Regulates Metabolic Genes ...Release of apoptotic factors from the mitochondria / Formation of apoptosome / Activation of caspases through apoptosome-mediated cleavage / Pyroptosis / Regulation of the apoptosome activity / Transcriptional activation of mitochondrial biogenesis / Detoxification of Reactive Oxygen Species / Complex III assembly / Complex IV assembly / TP53 Regulates Metabolic Genes / Cytoprotection by HMOX1 / respiratory chain complex IV assembly / subthalamus development / pons development / トランスロカーゼ; ヒドロンの輸送の触媒; 酸化還元酵素反応を伴う / mitochondrial respirasome assembly / NADH dehydrogenase (quinone) (non-electrogenic) activity / cerebellar Purkinje cell layer development / pyramidal neuron development / Respiratory electron transport / respiratory chain complex IV / thalamus development / respiratory chain complex / molybdopterin cofactor binding / cytochrome-c oxidase / respiratory chain complex III / oxidative phosphorylation / quinol-cytochrome-c reductase / mitochondrial electron transport, cytochrome c to oxygen / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / mitochondrial electron transport, ubiquinol to cytochrome c / iron-sulfur cluster assembly / Mitochondrial protein degradation / hypothalamus development / midbrain development / ubiquinone binding / electron transport coupled proton transport / NADH dehydrogenase activity / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / enzyme regulator activity / ferric iron binding / aerobic respiration / central nervous system development / hippocampus development / respiratory electron transport chain / mitochondrial membrane / metalloendopeptidase activity / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / NAD binding / FMN binding / 4 iron, 4 sulfur cluster binding / electron transfer activity / oxidoreductase activity / mitochondrial inner membrane / iron ion binding / copper ion binding / apoptotic process / heme binding / mitochondrion / proteolysis / metal ion binding / membrane / plasma membrane 類似検索 - 分子機能
NADH-quinone oxidoreductase, subunit15 / NADH-quinone oxidoreductase, subunit 15 superfamily / NADH-quinone oxidoreductase chain 15 / Frataxin/CyaY superfamily / Soluble ligand binding domain / Cytochrome b-c1 complex subunit 10 / Single alpha-helix domain superfamily / Ubiquinol-cytochrome C reductase complex, 6.4kD protein / Cytochrome c oxidase, subunit 8 / Mitochondrial cytochrome c oxidase subunit VIc/VIIs ...NADH-quinone oxidoreductase, subunit15 / NADH-quinone oxidoreductase, subunit 15 superfamily / NADH-quinone oxidoreductase chain 15 / Frataxin/CyaY superfamily / Soluble ligand binding domain / Cytochrome b-c1 complex subunit 10 / Single alpha-helix domain superfamily / Ubiquinol-cytochrome C reductase complex, 6.4kD protein / Cytochrome c oxidase, subunit 8 / Mitochondrial cytochrome c oxidase subunit VIc/VIIs / Cytochrome c oxidase, subunit 8 superfamily / Mitochondrial cytochrome c oxidase subunit VIc/VIIs superfamily / : / Cytochrome oxidase c subunit VIII / Cytochrome c oxidase subunit VIc / Cytochrome c oxidase subunit VIIa, metazoa / Cytochrome C oxidase, subunit VIIB / Cytochrome c oxidase subunit IV / Cytochrome C oxidase, subunit VIIB domain superfamily / Cytochrome c oxidase, subunit VIIa superfamily / Cytochrome C oxidase chain VIIB / Cytochrome c oxidase, subunit VIa, conserved site / Cytochrome c oxidase subunit VIa signature. / Ubiquinol-cytochrome c reductase 8kDa, N-terminal / Ubiquinol-cytochrome c reductase 8 kDa, N-terminal / Cytochrome c oxidase, subunit VIa / Cytochrome c oxidase, subunit VIa superfamily / Cytochrome c oxidase subunit VIa / SLBB domain / Molybdopterin oxidoreductase Fe4S4 domain / Cytochrome c oxidase, subunit VIb / : / Cytochrome c oxidase subunit Vb, zinc binding region signature. / Cytochrome c oxidase subunit VIIc / Cytochrome c oxidase subunit IV family / Cytochrome c oxidase, subunit VIb superfamily / Cytochrome c oxidase subunit VIIc superfamily / Cytochrome c oxidase subunit IV superfamily / Cytochrome c oxidase subunit VIIc / Cytochrome c oxidase subunit IV / Cytochrome c oxidase subunit 2, C-terminal / Cytochrome oxidase c subunit VIb / Cytochrome c oxidase, subunit Va/VI / Cytochrome c oxidase, subunit Va/VI superfamily / Cytochrome c oxidase subunit Va / Cytochrome c oxidase subunit VII / Cytochrome c oxidase subunit VII / Globular protein, non-globular alpha/beta subunit / Molybdopterin oxidoreductase Fe4S4 domain / Cytochrome c oxidase, subunit Vb / Cytochrome c oxidase subunit III domain / Cytochrome c oxidase subunit Vb / Cytochrome c oxidase subunit Vb, zinc binding domain profile. / Cytochrome c oxidase, subunit II / Cytochrome c oxidase, subunit Vb superfamily / Cytochrome b-c1 complex, subunit 6 / Molybdopterin dinucleotide-binding domain / Molydopterin dinucleotide binding domain / Cytochrome c oxidase subunit I domain / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome c, class IA/ IB / Cytochrome b-c1 complex subunit 8 / UcrQ family / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome oxidase subunit II transmembrane region profile. / Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily / Cytochrome c oxidase subunit III / Cytochrome c oxidase subunit III-like / Cytochrome c oxidase, subunit III, 4-helical bundle / Cytochrome c oxidase subunit III / Heme-copper oxidase subunit III family profile. / Cytochrome c oxidase subunit III-like superfamily / Cytochrome b-c1 complex subunit 7 / Cytochrome b-c1 complex subunit 7 superfamily / Ubiquinol-cytochrome C reductase complex 14kD subunit / Cytochrome b-c1 complex subunit 8 superfamily / Cytochrome b-c1 complex subunit Rieske, transmembrane domain / Ubiquinol cytochrome reductase transmembrane region / Cytochrome b-c1 complex subunit 9 / Cytochrome b-c1 complex subunit 9 superfamily / Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like / Ubiquinol-cytochrome C reductase hinge domain / Ubiquinol-cytochrome C reductase hinge domain superfamily / Ubiquinol-cytochrome C reductase hinge protein / Cytochrome c/quinol oxidase subunit II / Cytochrome c1, transmembrane anchor, C-terminal / : / Cytochrome b / Cytochrome C oxidase subunit II, transmembrane domain superfamily / Copper centre Cu(A) / CO II and nitrous oxide reductase dinuclear copper centers signature. / Ubiquinol-cytochrome c reductase, iron-sulphur subunit / : / Cytochrome c1 / Cytochrome c oxidase, subunit I, copper-binding site / Cytochrome C1 family / Heme-copper oxidase catalytic subunit, copper B binding region signature. / Cytochrome c oxidase-like, subunit I domain / Cytochrome oxidase subunit I profile. / : 類似検索 - ドメイン・相同性
ジャーナル: EMBO J / 年: 2011 タイトル: Arrangement of electron transport chain components in bovine mitochondrial supercomplex I1III2IV1. 著者: Thorsten Althoff / Deryck J Mills / Jean-Luc Popot / Werner Kühlbrandt / 要旨: The respiratory chain in the inner mitochondrial membrane contains three large multi-enzyme complexes that together establish the proton gradient for ATP synthesis, and assemble into a supercomplex. ...The respiratory chain in the inner mitochondrial membrane contains three large multi-enzyme complexes that together establish the proton gradient for ATP synthesis, and assemble into a supercomplex. A 19-Å 3D map of the 1.7-MDa amphipol-solubilized supercomplex I(1)III(2)IV(1) from bovine heart obtained by single-particle electron cryo-microscopy reveals an amphipol belt replacing the membrane lipid bilayer. A precise fit of the X-ray structures of complex I, the complex III dimer, and monomeric complex IV indicates distances of 13 nm between the ubiquinol-binding sites of complexes I and III, and of 10-11 nm between the cytochrome c binding sites of complexes III and IV. The arrangement of respiratory chain complexes suggests two possible pathways for efficient electron transfer through the supercomplex, of which the shorter branch through the complex III monomer proximal to complex I may be preferred.
#1: 年: 2011 タイトル: Strukturelle Untersuchungen am Superkomplex I1III2IV1 der Atmungskette mittels Kryoelektronenmikroskopie 著者: Althoff T
全体 : Respiratory supercomplex B (I1III2IV1) composed of complex I, dim...
全体
名称: Respiratory supercomplex B (I1III2IV1) composed of complex I, dimeric complex III and complex IV from bovine heart mitochondria
要素
試料: Respiratory supercomplex B (I1III2IV1) composed of complex I, dimeric complex III and complex IV from bovine heart mitochondria
タンパク質・ペプチド: NADH-dehydrogenase
タンパク質・ペプチド: Cytochrome c reductase
タンパク質・ペプチド: Cytochrome c oxidase
タンパク質・ペプチド: Cytochrome c
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超分子 #1000: Respiratory supercomplex B (I1III2IV1) composed of complex I, dim...
超分子
名称: Respiratory supercomplex B (I1III2IV1) composed of complex I, dimeric complex III and complex IV from bovine heart mitochondria タイプ: sample / ID: 1000 詳細: The supercomplexes were kept soluble by amphipol A8-35 集合状態: A monomer of complex I assembles with a dimer of complex III and a monomer of complex IV Number unique components: 4
pH: 7.7 / 詳細: 10 mM KCl, 15 mM HEPES, residual trehalose
グリッド
詳細: Continuous carbon 400 mesh copper grid
凍結
凍結剤: ETHANE / チャンバー内湿度: 70 % / チャンバー内温度: 95 K / 装置: HOMEMADE PLUNGER 詳細: Vitrification instrument: Custom-made hand plunger. Sample was adsorbed to carbon film for 30 seconds before blotting 手法: One-sided blotting for 26 - 30 seconds before plunging
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電子顕微鏡法
顕微鏡
FEI POLARA 300
温度
最低: 78 K / 最高: 95 K / 平均: 78 K
アライメント法
Legacy - 非点収差: Objective lens astigmatism was corrected at 200,000 x magnification Legacy - Electron beam tilt params: Beam tilt was corrected by adjusting pivot points
詳細
Low dose conditions. For random conical tilt each area was imaged twice with the first image taken at a tilt angle of -45 or -50 degree
撮影
カテゴリ: FILM / フィルム・検出器のモデル: KODAK SO-163 FILM / デジタル化 - スキャナー: ZEISS SCAI / デジタル化 - サンプリング間隔: 7 µm / 実像数: 154 / 平均電子線量: 25 e/Å2 詳細: Scanned images were binned to 2.38 Angstroms per pixel in IMAGIC Od range: 0.7 / ビット/ピクセル: 8
Tilt pairs of particles were selected interactively in JWEB
CTF補正
詳細: Phase-flippping on each particle
最終 再構成
想定した対称性 - 点群: C1 (非対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 19.0 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: SPIDER, IMAGIC 詳細: Final map was calculated from combined tilted and untilted datasets with 10684 projections each and omitting 30 per cent of images with lowest cross correlation coefficient using SIRT 使用した粒子像数: 10684
Protocol: Rigid Body. Only one monomer from the asymmetric unit was used. Docking was done manually according to detailed map features. Gave better fit than
精密化
空間: REAL / プロトコル: RIGID BODY FIT
得られたモデル
PDB-2ybb: Fitted model for bovine mitochondrial supercomplex I1III2IV1 by single particle cryo-EM (EMD-1876)