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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8ve3 | |||||||||
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タイトル | Unliganded human transthyretin in the compressed conformation | |||||||||
![]() | Transthyretin | |||||||||
![]() | TRANSPORT PROTEIN / Amyloidosis | |||||||||
機能・相同性 | ![]() Defective visual phototransduction due to STRA6 loss of function / negative regulation of glomerular filtration / The canonical retinoid cycle in rods (twilight vision) / purine nucleobase metabolic process / molecular sequestering activity / phototransduction, visible light / Non-integrin membrane-ECM interactions / retinoid metabolic process / Retinoid metabolism and transport / hormone activity ...Defective visual phototransduction due to STRA6 loss of function / negative regulation of glomerular filtration / The canonical retinoid cycle in rods (twilight vision) / purine nucleobase metabolic process / molecular sequestering activity / phototransduction, visible light / Non-integrin membrane-ECM interactions / retinoid metabolic process / Retinoid metabolism and transport / hormone activity / azurophil granule lumen / Amyloid fiber formation / Neutrophil degranulation / extracellular space / extracellular exosome / extracellular region / identical protein binding 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: 3.3 Å | |||||||||
![]() | Basanta, B. / Nugroho, K. / Yan, N. / Kline, G.M. / Tsai, F.J. / Wu, M. / Kelly, J.W. / Lander, G.C. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The conformational landscape of human transthyretin revealed by cryo-EM. 著者: Benjamin Basanta / Karina Nugroho / Nicholas L Yan / Gabriel M Kline / Evan T Powers / Felix J Tsai / Mengyu Wu / Althea Hansel-Harris / Jason S Chen / Stefano Forli / Jeffrey W Kelly / Gabriel C Lander / ![]() 要旨: Transthyretin (TTR) is a natively tetrameric thyroxine transporter in blood and cerebrospinal fluid whose misfolding and aggregation causes TTR amyloidosis. A rational drug design campaign identified ...Transthyretin (TTR) is a natively tetrameric thyroxine transporter in blood and cerebrospinal fluid whose misfolding and aggregation causes TTR amyloidosis. A rational drug design campaign identified the small molecule tafamidis (Vyndamax) as a stabilizer of the native TTR fold, and this aggregation inhibitor is regulatory agency approved for the treatment of TTR amyloidosis. Here we used cryo-EM to investigate the conformational landscape of this 55 kDa tetramer in the absence and presence of one or two ligands, revealing inherent asymmetries in the tetrameric architecture and previously unobserved conformational states. These findings provide critical mechanistic insights into negatively cooperative ligand binding and the structural pathways responsible for TTR amyloidogenesis, underscoring the capacity of cryo-EM to identify pharmacological targets suppressed by the confines of the crystal lattice, opening uncharted territory in structure-based drug design. | |||||||||
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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 | ![]() | 84.5 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 43163MC ![]() 8u52C ![]() 8ve0C ![]() 8ve1C ![]() 8ve2C ![]() 8ve4C ![]() 8ve5C ![]() 8ve6C 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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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: 13908.557 Da / 分子数: 4 / 由来タイプ: 組換発現 / 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: 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: Transthyretin / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 値: 0.05553 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: 7.6 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.85 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||
試料支持 | 詳細: The graphene grids were treated with UV/ozone using the UVOCS T10xT10 system. A 10-minute warmup run was performed immediately prior to inserting and treating grids for 4 minutes. グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 279 K 詳細: 3 uL of sample were applied onto the graphene side of the grid after it was mounted on the plunger (always at the same height), and immediately blotted for 4 seconds by holding a 1 x 6 cm ...詳細: 3 uL of sample were applied onto the graphene side of the grid after it was mounted on the plunger (always at the same height), and immediately blotted for 4 seconds by holding a 1 x 6 cm piece of Whatman 1 filter paper parallel to the grid, in full contact. Timing was kept with the help of a metronome. The blotting countdown was started after the blotted liquid spot on the filter paper stopped spreading and the grid was plunged in liquid ethane at the same time the blotting paper was pulled back, in a single motion. |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 73000 X / 倍率(補正後): 88968 X / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 500 nm / Calibrated defocus min: 500 nm / 最大 デフォーカス(補正後): 1500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 85 K / 最低温度: 78 K |
撮影 | 平均露光時間: 6.8 sec. / 電子線照射量: 52 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 3739 |
画像スキャン | サンプリングサイズ: 5 µm / 横: 3838 / 縦: 3710 / 動画フレーム数/画像: 50 |
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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 | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 130181 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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