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基本情報
登録情報 | データベース: PDB / ID: 9jbp | ||||||
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タイトル | Cryo-EM structure of human SOD1 (C6A/C111A) amyloid filament | ||||||
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![]() | PROTEIN FIBRIL / amyloid / filament / superoxide dismutase 1 / amyotrophic lateral sclerosis | ||||||
機能・相同性 | ![]() action potential initiation / response to antipsychotic drug / neurofilament cytoskeleton organization / response to carbon monoxide / protein phosphatase 2B binding / dense core granule / regulation of organ growth / relaxation of vascular associated smooth muscle / anterograde axonal transport / positive regulation of oxidative stress-induced intrinsic apoptotic signaling pathway ...action potential initiation / response to antipsychotic drug / neurofilament cytoskeleton organization / response to carbon monoxide / protein phosphatase 2B binding / dense core granule / regulation of organ growth / relaxation of vascular associated smooth muscle / anterograde axonal transport / positive regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / response to superoxide / regulation of T cell differentiation in thymus / peripheral nervous system myelin maintenance / retina homeostasis / auditory receptor cell stereocilium organization / hydrogen peroxide biosynthetic process / cellular response to potassium ion / retrograde axonal transport / superoxide anion generation / myeloid cell homeostasis / regulation of GTPase activity / response to copper ion / superoxide metabolic process / muscle cell cellular homeostasis / superoxide dismutase / heart contraction / Detoxification of Reactive Oxygen Species / cellular response to ATP / superoxide dismutase activity / negative regulation of reproductive process / negative regulation of developmental process / transmission of nerve impulse / cellular response to cadmium ion / regulation of multicellular organism growth / ectopic germ cell programmed cell death / response to axon injury / neuronal action potential / ovarian follicle development / positive regulation of superoxide anion generation / regulation of mitochondrial membrane potential / axon cytoplasm / glutathione metabolic process / embryo implantation / dendrite cytoplasm / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / removal of superoxide radicals / reactive oxygen species metabolic process / positive regulation of phagocytosis / placenta development / response to amphetamine / thymus development / positive regulation of cytokine production / determination of adult lifespan / locomotory behavior / response to nutrient levels / response to hydrogen peroxide / sensory perception of sound / regulation of blood pressure / mitochondrial intermembrane space / small GTPase binding / negative regulation of inflammatory response / peroxisome / Platelet degranulation / protein-folding chaperone binding / response to heat / cytoplasmic vesicle / response to ethanol / spermatogenesis / gene expression / negative regulation of neuron apoptotic process / intracellular iron ion homeostasis / lysosome / positive regulation of MAPK cascade / positive regulation of apoptotic process / mitochondrial matrix / response to xenobiotic stimulus / copper ion binding / neuronal cell body / apoptotic process / protein homodimerization activity / protein-containing complex / mitochondrion / extracellular space / extracellular exosome / extracellular region / zinc ion binding / nucleoplasm / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.18 Å | ||||||
![]() | Baek, Y. / Kim, H. / Lee, D. / Kim, D. / Jo, E. / Roh, S.-H. / Ha, N.-C. | ||||||
資金援助 | 1件
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![]() | ![]() タイトル: Structural insights into the role of reduced cysteine residues in SOD1 amyloid filament formation. 著者: Yeongjin Baek / Hyunmin Kim / Dukwon Lee / Doyeon Kim / Eunbyul Jo / Soung-Hun Roh / Nam-Chul Ha / ![]() ![]() 要旨: The formation of superoxide dismutase 1 (SOD1) filaments has been implicated in amyotrophic lateral sclerosis (ALS). Although the disulfide bond formed between Cys57 and Cys146 in the active state ...The formation of superoxide dismutase 1 (SOD1) filaments has been implicated in amyotrophic lateral sclerosis (ALS). Although the disulfide bond formed between Cys57 and Cys146 in the active state has been well studied, the role of the reduced cysteine residues, Cys6 and Cys111, in SOD1 filament formation remains unclear. In this study, we investigated the role of reduced cysteine residues by determining and comparing cryoelectron microscopy (cryo-EM) structures of wild-type (WT) and C6A/C111A SOD1 filaments under thiol-based reducing and metal-depriving conditions, starting with protein samples possessing enzymatic activity. The C6A/C111A mutant SOD1 formed filaments more rapidly than the WT protein. The mutant structure had a unique paired-protofilament arrangement, with a smaller filament core than that of the single-protofilament structure observed in WT SOD1. Although the single-protofilament form developed more slowly, cross-seeding experiments demonstrated the predominance of single-protofilament morphology over paired protofilaments, regardless of the presence of the Cys6 and Cys111 mutations. These findings highlight the importance of the number of amino acid residues within the filament core in determining the energy requirements for assembly. Our study provides insights into ALS pathogenesis by elucidating the initiation and propagation of filament formation, which potentially leads to deleterious amyloid filaments. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 66.8 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 25.5 KB | 表示 | |
CIF形式データ | ![]() | 35.9 KB | 表示 | |
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-関連構造データ
関連構造データ | ![]() 61322MC ![]() 9jboC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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
#1: タンパク質 | 分子量: 16642.439 Da / 分子数: 6 / 変異: C6A,C111A / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質・ペプチド | 分子量: 698.854 Da / 分子数: 6 / 由来タイプ: 組換発現 / 詳細: superoxide dismutase[Cu-Zn](P00441) / 由来: (組換発現) ![]() ![]() ![]() Has protein modification | N | |
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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: HELICAL ARRAY / 3次元再構成法: らせん対称体再構成法 |
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試料調製
構成要素 | 名称: Amyloid filament of human C6A/C111A mutant SOD1 protein タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 69.6 kDa/nm / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7 |
試料 | 濃度: 0.8 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 R1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE |
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電子顕微鏡撮影
顕微鏡 | モデル: TFS GLACIOS |
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電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 92000 X / 最大 デフォーカス(公称値): 2100 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 2.7 mm |
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 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 撮影したグリッド数: 1 / 実像数: 1782 |
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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 | |||||||||||||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: 179.602 ° / 軸方向距離/サブユニット: 2.397 Å / らせん対称軸の対称性: C1 | |||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 973528 | |||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.18 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 679265 / 対称性のタイプ: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL |