登録情報 データベース : EMDB / ID : EMD-19357 ダウンロードとリンクタイトル Structure of the FDX2-bound core ISC complex (distal conformation) マップデータdensity modified map (primary map) 詳細 試料複合体 : Human FDX2-bound core ISC complex (NFS1-ISD11-ACP1-ISCU2-FDX2)タンパク質・ペプチド : Isoform Mitochondrial of Cysteine desulfuraseタンパク質・ペプチド : LYR motif-containing protein 4タンパク質・ペプチド : Acyl carrier proteinタンパク質・ペプチド : Isoform 1 of Iron-sulfur cluster assembly enzyme ISCUタンパク質・ペプチド : Ferredoxin-2, mitochondrialリガンド : S-[2-({N-[(2R)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] dodecanethioateリガンド : FE (II) IONリガンド : FE2/S2 (INORGANIC) CLUSTERリガンド : water 詳細 キーワード cysteine desulfurase / FeS biosynthesis / FeS biogenesis / mitochondria / Friedreich's ataxia / frataxin / ferredoxin / FDX2 / iron-sulfur cluster / TRANSFERASE機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
Electron transport from NADPH to Ferredoxin / Defective CYP11A1 causes AICSR / iron-sulfur cluster chaperone activity / negative regulation of iron ion import across plasma membrane / molybdopterin cofactor metabolic process / Molybdenum cofactor biosynthesis / L-cysteine desulfurase complex / [4Fe-4S] cluster assembly / Mitochondrial iron-sulfur cluster biogenesis / Complex III assembly ... Electron transport from NADPH to Ferredoxin / Defective CYP11A1 causes AICSR / iron-sulfur cluster chaperone activity / negative regulation of iron ion import across plasma membrane / molybdopterin cofactor metabolic process / Molybdenum cofactor biosynthesis / L-cysteine desulfurase complex / [4Fe-4S] cluster assembly / Mitochondrial iron-sulfur cluster biogenesis / Complex III assembly / sulfur carrier activity / P450-containing electron transport chain / positive regulation of mitochondrial electron transport, NADH to ubiquinone / Maturation of TCA enzymes and regulation of TCA cycle / cysteine desulfurase / cysteine desulfurase activity / Mo-molybdopterin cofactor biosynthetic process / Pregnenolone biosynthesis / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / [2Fe-2S] cluster assembly / lipid biosynthetic process / lipid A biosynthetic process / iron-sulfur cluster assembly / acyl binding / acyl carrier activity / iron-sulfur cluster binding / phosphopantetheine binding / Endogenous sterols / electron transport chain / ferrous iron binding / 2 iron, 2 sulfur cluster binding / fatty acid biosynthetic process / pyridoxal phosphate binding / Maturation of replicase proteins / molecular adaptor activity / intracellular iron ion homeostasis / electron transfer activity / nuclear body / mitochondrial matrix / iron ion binding / response to xenobiotic stimulus / lipid binding / centrosome / structural molecule activity / protein homodimerization activity / mitochondrion / zinc ion binding / nucleoplasm / metal ion binding / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能 LYRM4, LYR domain / : / ISC system FeS cluster assembly, IscU scaffold / Adrenodoxin, iron-sulphur binding site / Adrenodoxin family, iron-sulfur binding region signature. / Cysteine desulfurase IscS / NIF system FeS cluster assembly, NifU, N-terminal / NifU-like N terminal domain / Adrenodoxin / Cysteine desulfurase ... LYRM4, LYR domain / : / ISC system FeS cluster assembly, IscU scaffold / Adrenodoxin, iron-sulphur binding site / Adrenodoxin family, iron-sulfur binding region signature. / Cysteine desulfurase IscS / NIF system FeS cluster assembly, NifU, N-terminal / NifU-like N terminal domain / Adrenodoxin / Cysteine desulfurase / Aminotransferase class-V, pyridoxal-phosphate binding site / Aminotransferases class-V pyridoxal-phosphate attachment site. / Aminotransferase class V domain / Aminotransferase class-V / 2Fe-2S iron-sulfur cluster binding domain / Complex 1 LYR protein domain / Complex 1 protein (LYR family) / Beta-grasp domain superfamily / Acyl carrier protein (ACP) / 2Fe-2S ferredoxin-type iron-sulfur binding domain profile. / 2Fe-2S ferredoxin-type iron-sulfur binding domain / 2Fe-2S ferredoxin-like superfamily / Phosphopantetheine attachment site / Phosphopantetheine attachment site. / Phosphopantetheine attachment site / ACP-like superfamily / Carrier protein (CP) domain profile. / Phosphopantetheine binding ACP domain / Pyridoxal phosphate-dependent transferase, small domain / Pyridoxal phosphate-dependent transferase, major domain / Pyridoxal phosphate-dependent transferase 類似検索 - ドメイン・相同性 Acyl carrier protein / Ferredoxin-2, mitochondrial / Iron-sulfur cluster assembly enzyme ISCU / LYR motif-containing protein 4 / Cysteine desulfurase 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Escherichia coli BL21(DE3) (大腸菌)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 2.52 Å 詳細 データ登録者Steinhilper R / Murphy BJ 資金援助 ドイツ, 1件 詳細 詳細を隠すOrganization Grant number 国 Max Planck Society ドイツ
引用ジャーナル : Nat Commun / 年 : 2024タイトル : Two-stage binding of mitochondrial ferredoxin-2 to the core iron-sulfur cluster assembly complex.著者 : Ralf Steinhilper / Linda Boß / Sven-A Freibert / Vinzent Schulz / Nils Krapoth / Susann Kaltwasser / Roland Lill / Bonnie J Murphy / 要旨 : Iron-sulfur (FeS) protein biogenesis in eukaryotes begins with the de novo assembly of [2Fe-2S] clusters by the mitochondrial core iron-sulfur cluster assembly (ISC) complex. This complex comprises ... Iron-sulfur (FeS) protein biogenesis in eukaryotes begins with the de novo assembly of [2Fe-2S] clusters by the mitochondrial core iron-sulfur cluster assembly (ISC) complex. This complex comprises the scaffold protein ISCU2, the cysteine desulfurase subcomplex NFS1-ISD11-ACP1, the allosteric activator frataxin (FXN) and the electron donor ferredoxin-2 (FDX2). The structural interaction of FDX2 with the complex remains unclear. Here, we present cryo-EM structures of the human FDX2-bound core ISC complex showing that FDX2 and FXN compete for overlapping binding sites. FDX2 binds in either a 'distal' conformation, where its helix F interacts electrostatically with an arginine patch of NFS1, or a 'proximal' conformation, where this interaction tightens and the FDX2-specific C terminus binds to NFS1, facilitating the movement of the [2Fe-2S] cluster of FDX2 closer to the ISCU2 FeS cluster assembly site for rapid electron transfer. Structure-based mutational studies verify the contact areas of FDX2 within the core ISC complex. 履歴 登録 2024年1月5日 - ヘッダ(付随情報) 公開 2024年12月18日 - マップ公開 2024年12月18日 - 更新 2024年12月25日 - 現状 2024年12月25日 処理サイト : PDBe / 状態 : 公開
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