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基本情報
登録情報 | データベース: EMDB / ID: EMD-6773 | |||||||||
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タイトル | Cryo-EM structure of human respiratory complex I | |||||||||
![]() | This map was obtained by sub-region refinement. | |||||||||
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機能・相同性 | ![]() protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / blastocyst hatching / ubiquinone biosynthetic process / cellular respiration / Mitochondrial protein import ...protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / blastocyst hatching / ubiquinone biosynthetic process / cellular respiration / Mitochondrial protein import / cellular response to oxygen levels / response to light intensity / mesenchymal stem cell proliferation / respiratory chain complex / mitochondrial [2Fe-2S] assembly complex / reproductive system development / iron-sulfur cluster assembly complex / mitochondrial large ribosomal subunit binding / gliogenesis / mesenchymal stem cell differentiation / circulatory system development / regulation of protein phosphorylation / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / negative regulation of non-canonical NF-kappaB signal transduction / cardiac muscle tissue development / neural precursor cell proliferation / positive regulation of mitochondrial membrane potential / [2Fe-2S] cluster assembly / oxygen sensor activity / response to hydroperoxide / azurophil granule membrane / cellular response to glucocorticoid stimulus / stem cell division / sodium ion transport / NADH dehydrogenase activity / iron-sulfur cluster assembly / acyl binding / mitochondrial ATP synthesis coupled electron transport / ubiquinone binding / acyl carrier activity / electron transport coupled proton transport / NADH:ubiquinone reductase (H+-translocating) / positive regulation of ATP biosynthetic process / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / proton motive force-driven mitochondrial ATP synthesis / RHOG GTPase cycle / positive regulation of execution phase of apoptosis / respiratory chain complex I / response to cAMP / NADH dehydrogenase (ubiquinone) activity / endopeptidase activator activity / quinone binding / cellular response to interferon-beta / ATP synthesis coupled electron transport / negative regulation of reactive oxygen species biosynthetic process / extrinsic apoptotic signaling pathway / cellular response to retinoic acid / neurogenesis / ionotropic glutamate receptor binding / regulation of mitochondrial membrane potential / substantia nigra development / Mitochondrial protein degradation / muscle contraction / reactive oxygen species metabolic process / aerobic respiration / synaptic membrane / cerebellum development / fatty acid binding / respiratory electron transport chain / response to nicotine / DNA damage response, signal transduction by p53 class mediator / kidney development / fatty acid metabolic process / response to hydrogen peroxide / sensory perception of sound / monooxygenase activity / circadian rhythm / mitochondrial membrane / brain development / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / multicellular organism growth / NAD binding / positive regulation of protein catabolic process / fatty acid biosynthetic process / cellular senescence / FMN binding / nervous system development / 4 iron, 4 sulfur cluster binding / response to oxidative stress / protease binding / response to ethanol / gene expression / in utero embryonic development / response to hypoxia / electron transfer activity / mitochondrial inner membrane / nuclear speck / nuclear body 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.7 Å | |||||||||
![]() | Gu J / Wu M / Yang M | |||||||||
![]() | ![]() タイトル: Architecture of Human Mitochondrial Respiratory Megacomplex IIIIIV. 著者: Runyu Guo / Shuai Zong / Meng Wu / Jinke Gu / Maojun Yang / ![]() 要旨: The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, ...The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-IIIIIV (MCIIIIIV) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCIIIIIV forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 26.2 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 14.3 KB 14.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 23.7 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 313.1 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 312.6 KB | 表示 | |
XML形式データ | ![]() | 7.5 KB | 表示 | |
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 | ![]() 5xtdMC ![]() 6771C ![]() 6772C ![]() 6774C ![]() 6775C ![]() 6776C ![]() 5xtbC ![]() 5xtcC ![]() 5xteC ![]() 5xthC ![]() 5xtiC 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 |
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リンク
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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注釈 | This map was obtained by sub-region refinement. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 1.083 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : Human respiratory complex I
全体 | 名称: Human respiratory complex I |
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要素 |
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-超分子 #1: Human respiratory complex I
超分子 | 名称: Human respiratory complex I / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#44 |
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由来(天然) | 生物種: ![]() |
分子量 | 実験値: 1.0 MDa |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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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 II (4k x 4k) 平均電子線量: 1.25 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: OTHER / 撮影モード: BRIGHT FIELD |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
CTF補正 | ソフトウェア - 名称: CTFFIND (ver. 3.0) |
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最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 1.4) / 使用した粒子像数: 167761 |
初期 角度割当 | タイプ: RANDOM ASSIGNMENT / ソフトウェア - 名称: RELION (ver. 1.4) |
最終 角度割当 | タイプ: RANDOM ASSIGNMENT / ソフトウェア - 名称: RELION (ver. 1.4) |