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基本情報
登録情報 | データベース: PDB / ID: 6q9b | ||||||
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タイトル | CI Membrane Arm focused refinement from Ovine respiratory SC I+III2 | ||||||
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![]() | ELECTRON TRANSPORT / complex I / membrane arm / cellular respiration / mitochondria | ||||||
機能・相同性 | ![]() : / : / oxidoreductase activity, acting on NAD(P)H / acyl binding / ubiquinone binding / acyl carrier activity / electron transport coupled proton transport / NADH:ubiquinone reductase (H+-translocating) / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone ...: / : / oxidoreductase activity, acting on NAD(P)H / acyl binding / ubiquinone binding / acyl carrier activity / electron transport coupled proton transport / NADH:ubiquinone reductase (H+-translocating) / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / NADH dehydrogenase activity / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / membrane => GO:0016020 / quinone binding / ATP synthesis coupled electron transport / reactive oxygen species metabolic process / electron transport chain / mitochondrial intermembrane space / NAD binding / 4 iron, 4 sulfur cluster binding / mitochondrial inner membrane / mitochondrial matrix / mitochondrion 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: 3.9 Å | ||||||
![]() | Letts, J.A. / Sazanov, L.A. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structures of Respiratory Supercomplex I+III Reveal Functional and Conformational Crosstalk. 著者: James A Letts / Karol Fiedorczuk / Gianluca Degliesposti / Mark Skehel / Leonid A Sazanov / ![]() ![]() ![]() 要旨: The mitochondrial electron transport chain complexes are organized into supercomplexes (SCs) of defined stoichiometry, which have been proposed to regulate electron flux via substrate channeling. We ...The mitochondrial electron transport chain complexes are organized into supercomplexes (SCs) of defined stoichiometry, which have been proposed to regulate electron flux via substrate channeling. We demonstrate that CoQ trapping in the isolated SC I+III limits complex (C)I turnover, arguing against channeling. The SC structure, resolved at up to 3.8 Å in four distinct states, suggests that CoQ oxidation may be rate limiting because of unequal access of CoQ to the active sites of CIII. CI shows a transition between "closed" and "open" conformations, accompanied by the striking rotation of a key transmembrane helix. Furthermore, the state of CI affects the conformational flexibility within CIII, demonstrating crosstalk between the enzymes. CoQ was identified at only three of the four binding sites in CIII, suggesting that interaction with CI disrupts CIII symmetry in a functionally relevant manner. Together, these observations indicate a more nuanced functional role for the SCs. | ||||||
履歴 |
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構造ビューア | 分子: ![]() ![]() |
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-関連構造データ
関連構造データ | ![]() 4479MC ![]() 4480C ![]() 4481C ![]() 4482C ![]() 4493C ![]() 4494C ![]() 4495C ![]() 4496C ![]() 4497C ![]() 4498C ![]() 4499C ![]() 4500C ![]() 4501C ![]() 4502C ![]() 4505C ![]() 4506C ![]() 4507C ![]() 6q9dC ![]() 6q9eC ![]() 6qa9C ![]() 6qbxC ![]() 6qc2C ![]() 6qc3C ![]() 6qc4C ![]() 6qc5C ![]() 6qc6C ![]() 6qc7C ![]() 6qc8C ![]() 6qc9C ![]() 6qcaC ![]() 6qcfC 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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要素
-タンパク質 , 2種, 2分子 S2AB
#1: タンパク質 | 分子量: 49193.273 Da / 分子数: 1 / 由来タイプ: 天然 詳細: Since this is a focused refinement only the N-terminal part of this subunit is present in the density.,Since this is a focused refinement only the N-terminal part of this subunit is present in the density. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PJ73 |
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#11: タンパク質 | 分子量: 10119.541 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The first residue is disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5NQT7 |
-NADH-ubiquinone oxidoreductase chain ... , 7種, 7分子 D3D1D64LD5D4D2
#2: タンパク質 | 分子量: 13106.520 Da / 分子数: 1 / 由来タイプ: 天然 詳細: There is a disordered region in the protein that is not modeled. 由来: (天然) ![]() ![]() 参照: UniProt: O78753, NADH:ubiquinone reductase (H+-translocating) |
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#3: タンパク質 | 分子量: 35884.902 Da / 分子数: 1 / 由来タイプ: 天然 詳細: There is a disordered region in the protein that is not modeled. 由来: (天然) ![]() ![]() 参照: UniProt: O78747, NADH:ubiquinone reductase (H+-translocating) |
#4: タンパク質 | 分子量: 19126.619 Da / 分子数: 1 / 由来タイプ: 天然 詳細: There is a disordered region in the protein that was not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac 参照: UniProt: O78757, NADH:ubiquinone reductase (H+-translocating) |
#5: タンパク質 | 分子量: 10840.228 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac 参照: UniProt: O78754, NADH:ubiquinone reductase (H+-translocating) |
#6: タンパク質 | 分子量: 68410.898 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac 参照: UniProt: O78756, NADH:ubiquinone reductase (H+-translocating) |
#7: タンパク質 | 分子量: 52058.734 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac 参照: UniProt: O78755, NADH:ubiquinone reductase (H+-translocating) |
#8: タンパク質 | 分子量: 39149.805 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac 参照: UniProt: O78748, NADH:ubiquinone reductase (H+-translocating) |
-NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit ... , 5種, 5分子 AKA8AJAMA1
#9: タンパク質 | 分子量: 14610.776 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PAR2 |
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#12: タンパク質 | 分子量: 20008.014 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PYA5 |
#14: タンパク質 | 分子量: 36803.762 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5QBF5 |
#20: タンパク質 | 分子量: 16635.264 Da / 分子数: 1 / 由来タイプ: 天然 詳細: Because this is a focused refinement only the C-terminal part of this subunit is present in the density. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac |
#29: タンパク質 | 分子量: 8211.519 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac |
-NADH:ubiquinone oxidoreductase subunit ... , 9種, 9分子 B5BJS5A3B3B4B7B9B2
#10: タンパク質 | 分子量: 16714.369 Da / 分子数: 1 / 由来タイプ: 天然 詳細: First few residues are disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5QHN8 |
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#13: タンパク質 | 分子量: 20880.752 Da / 分子数: 1 / 由来タイプ: 天然 詳細: Some residues are disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac |
#15: タンパク質 | 分子量: 12474.397 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5QFF9 |
#16: タンパク質 | 分子量: 9194.655 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The N-terminus is disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5NYM7 |
#17: タンパク質 | 分子量: 11015.482 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The termini are disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5Q5T4 |
#19: タンパク質 | 分子量: 14975.999 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5QF73 |
#22: タンパク質 | 分子量: 16282.610 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The C-terminus of this subunit was disordered and therefore not modeled 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5P5V3 |
#23: タンパク質 | 分子量: 21648.715 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PGA3 |
#24: タンパク質 | 分子量: 8500.289 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PVD7 |
-NADH dehydrogenase [ubiquinone] 1 subunit ... , 2種, 2分子 C2C1
#18: タンパク質 | 分子量: 14231.420 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The N-terminal residue is disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5P9Q8 |
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#27: タンパク質・ペプチド | 分子量: 5808.645 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac |
-NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit ... , 4種, 4分子 B6B8BKB1
#21: タンパク質 | 分子量: 15433.929 Da / 分子数: 1 / 由来タイプ: 天然 詳細: Disordered regions of this subunit were not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PZE3 |
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#25: タンパク質 | 分子量: 18818.070 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5Q1B0 |
#26: タンパク質 | 分子量: 14455.033 Da / 分子数: 1 / 由来タイプ: 天然 詳細: The N-terminus was disordered and therefore not modeled. 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5PWF1 |
#28: タンパク質 | 分子量: 6930.083 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() Plasmid details: Ovis aries (sheep) hearts were purchased from C Humphreys & Sons (Chelmsford, UK). 組織: Cardiac / 参照: UniProt: W5QG39 |
-非ポリマー , 4種, 13分子 






#30: 化合物 | ChemComp-3PE / #31: 化合物 | ChemComp-CDL / #32: 化合物 | #33: 化合物 | ChemComp-ZMP / | |
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-詳細
Has protein modification | Y |
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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: PARTICLE / 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: Ovine mitochondrial SC I+III2 / タイプ: COMPLEX 詳細: Complex I membrane arm focused refinement from ovine respiratory SC I+III2 Entity ID: #1-#29 / 由来: NATURAL | ||||||||||||||||||||
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分子量 | 値: 1.4 MDa / 実験値: NO | ||||||||||||||||||||
由来(天然) | 生物種: ![]() ![]() | ||||||||||||||||||||
緩衝液 | pH: 7.4 / 詳細: 250 mM NaCl, 20 mM HEPES, pH 7.7, 0.02% Brij-35 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R0.6/1 | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: PROPANE / 湿度: 95 % / 凍結前の試料温度: 277 K 詳細: blotting for 30 seconds at 4 degrees Celsius, 95% humidity and flash freezing |
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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 |
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: 2 sec. / 電子線照射量: 51 e/Å2 フィルム・検出器のモデル: FEI FALCON II (4k x 4k) 撮影したグリッド数: 1 / 実像数: 1854 |
画像スキャン | 動画フレーム数/画像: 34 |
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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 | ||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 400000 | ||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 174334 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 2 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 90 / プロトコル: OTHER / 空間: REAL | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 1LNK Accession code: 1LNK / Source name: PDB / タイプ: experimental model |