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基本情報
登録情報 | データベース: PDB / ID: 6nzu | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Structure of the human frataxin-bound iron-sulfur cluster assembly complex | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | TRANSFERASE / OXIDOREDUCTASE / human frataxin-bound iron-sulfur cluster assembly complex | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() : / negative regulation of iron ion import across plasma membrane / molybdopterin cofactor metabolic process / proprioception / Molybdenum cofactor biosynthesis / positive regulation of lyase activity / positive regulation of succinate dehydrogenase activity / : / L-cysteine desulfurase complex / iron incorporation into metallo-sulfur cluster ...: / negative regulation of iron ion import across plasma membrane / molybdopterin cofactor metabolic process / proprioception / Molybdenum cofactor biosynthesis / positive regulation of lyase activity / positive regulation of succinate dehydrogenase activity / : / L-cysteine desulfurase complex / iron incorporation into metallo-sulfur cluster / [4Fe-4S] cluster assembly / Mitochondrial iron-sulfur cluster biogenesis / Complex III assembly / iron chaperone activity / positive regulation of mitochondrial electron transport, NADH to ubiquinone / Maturation of TCA enzymes and regulation of TCA cycle / cysteine desulfurase / cysteine desulfurase activity / negative regulation of organ growth / positive regulation of catalytic activity / mitochondrial respiratory chain complex III assembly / Mo-molybdopterin cofactor biosynthetic process / Mitochondrial protein import / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / oxidative phosphorylation / response to iron ion / embryo development ending in birth or egg hatching / [2Fe-2S] cluster assembly / adult walking behavior / heme biosynthetic process / negative regulation of multicellular organism growth / organ growth / muscle cell cellular homeostasis / iron-sulfur cluster assembly / ferroxidase / negative regulation of release of cytochrome c from mitochondria / acyl carrier activity / ferroxidase activity / protein autoprocessing / iron-sulfur cluster binding / ferric iron binding / ferrous iron binding / 2 iron, 2 sulfur cluster binding / cellular response to hydrogen peroxide / pyridoxal phosphate binding / iron ion transport / Maturation of replicase proteins / positive regulation of cell growth / molecular adaptor activity / intracellular iron ion homeostasis / nuclear body / mitochondrial matrix / iron ion binding / positive regulation of cell population proliferation / centrosome / negative regulation of apoptotic process / protein homodimerization activity / mitochondrion / zinc ion binding / nucleoplasm / metal ion binding / nucleus / 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: 3.2 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Fox, N.G. / Yu, X. / Xidong, F. / Alain, M. / Joseph, N. / Claire, S.D. / Christine, B. / Han, S. / Yue, W.W. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | ![]() タイトル: Structure of the human frataxin-bound iron-sulfur cluster assembly complex provides insight into its activation mechanism. 著者: Nicholas G Fox / Xiaodi Yu / Xidong Feng / Henry J Bailey / Alain Martelli / Joseph F Nabhan / Claire Strain-Damerell / Christine Bulawa / Wyatt W Yue / Seungil Han / ![]() ![]() 要旨: The core machinery for de novo biosynthesis of iron-sulfur clusters (ISC), located in the mitochondria matrix, is a five-protein complex containing the cysteine desulfurase NFS1 that is activated by ...The core machinery for de novo biosynthesis of iron-sulfur clusters (ISC), located in the mitochondria matrix, is a five-protein complex containing the cysteine desulfurase NFS1 that is activated by frataxin (FXN), scaffold protein ISCU, accessory protein ISD11, and acyl-carrier protein ACP. Deficiency in FXN leads to the loss-of-function neurodegenerative disorder Friedreich's ataxia (FRDA). Here the 3.2 Å resolution cryo-electron microscopy structure of the FXN-bound active human complex, containing two copies of the NFS1-ISD11-ACP-ISCU-FXN hetero-pentamer, delineates the interactions of FXN with other component proteins of the complex. FXN binds at the interface of two NFS1 and one ISCU subunits, modifying the local environment of a bound zinc ion that would otherwise inhibit NFS1 activity in complexes without FXN. Our structure reveals how FXN facilitates ISC production through stabilizing key loop conformations of NFS1 and ISCU at the protein-protein interfaces, and suggests how FRDA clinical mutations affect complex formation and FXN activation. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 366 KB | 表示 | ![]() |
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PDB形式 | ![]() | 286.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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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
-タンパク質 , 5種, 10分子 AEBFCGDHIJ
#1: タンパク質 | 分子量: 44850.371 Da / 分子数: 2 / 断片: UNP residues 56-457 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9Y697, cysteine desulfurase #2: タンパク質 | 分子量: 10850.562 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9HD34 #3: タンパク質 | 分子量: 8251.055 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: A0A437HBF4 #4: タンパク質 | 分子量: 13412.580 Da / 分子数: 2 / 断片: UNP residues 35-157 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9H1K1 #5: タンパク質 | 分子量: 14501.001 Da / 分子数: 2 / 断片: UNP residues 81-210 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q16595, ferroxidase |
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-非ポリマー , 3種, 6分子 




#6: 化合物 | #7: 化合物 | #8: 化合物 | |
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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: The human frataxin-bound iron-sulfur cluster assembly complex タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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分子量 | 値: 0.186 MDa / 実験値: YES |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: unspecified |
急速凍結 | 凍結剤: ETHANE |
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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 |
撮影 | 電子線照射量: 42 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.14_3260: / 分類: 精密化 | ||||||||||||||||||||||||||||||
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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: C2 (2回回転対称) | ||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 267153 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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