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基本情報
登録情報 | データベース: PDB / ID: 9os0 | ||||||||||||
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タイトル | MicroED structure of lysozyme complexed with N,N',N"-triacetylchitotriose from cocktail-soaked crystals | ||||||||||||
![]() | Lysozyme C | ||||||||||||
![]() | HYDROLASE / Enzyme / complex / MicroED / cocktail | ||||||||||||
機能・相同性 | ![]() Lactose synthesis / Antimicrobial peptides / Neutrophil degranulation / beta-N-acetylglucosaminidase activity / cell wall macromolecule catabolic process / lysozyme / lysozyme activity / defense response to Gram-negative bacterium / killing of cells of another organism / defense response to Gram-positive bacterium ...Lactose synthesis / Antimicrobial peptides / Neutrophil degranulation / beta-N-acetylglucosaminidase activity / cell wall macromolecule catabolic process / lysozyme / lysozyme activity / defense response to Gram-negative bacterium / killing of cells of another organism / defense response to Gram-positive bacterium / defense response to bacterium / endoplasmic reticulum / extracellular space / identical protein binding / cytoplasm 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() ![]() | ||||||||||||
手法 | 電子線結晶学 / ![]() | ||||||||||||
![]() | Vlahakis, N.W. / Flowers, C.W. / Rodriguez, J.A. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Combining MicroED and native mass spectrometry for structural discovery of enzyme-small molecule complexes. 著者: Niko W Vlahakis / Cameron W Flowers / Mengting Liu / Matthew P Agdanowski / Samuel Johnson / Jacob A Summers / Lian M C Jacobs / Catherine Keyser / Phoebe Russell / Samuel L Rose / Julien ...著者: Niko W Vlahakis / Cameron W Flowers / Mengting Liu / Matthew P Agdanowski / Samuel Johnson / Jacob A Summers / Lian M C Jacobs / Catherine Keyser / Phoebe Russell / Samuel L Rose / Julien Orlans / Nima Adhami / Yu Chen / Michael R Sawaya / Shibom Basu / Daniele de Sanctis / Yu Chen / Soichi Wakatsuki / Hosea M Nelson / Joseph A Loo / Yi Tang / Jose A Rodriguez / ![]() ![]() 要旨: With the goal of accelerating the discovery of small molecule-protein complexes, we leverage fast, low-dose, event-based electron counting microcrystal electron diffraction (MicroED) data collection ...With the goal of accelerating the discovery of small molecule-protein complexes, we leverage fast, low-dose, event-based electron counting microcrystal electron diffraction (MicroED) data collection and native mass spectrometry. This approach, which we term electron diffraction with native mass spectrometry (ED-MS), allows assignment of protein target structures bound to ligands with data obtained from crystal slurries soaked with mixtures of known inhibitors and crude biosynthetic reactions. This extends to libraries of printed ligands dispensed directly onto TEM grids for later soaking with microcrystal slurries, and complexes with noncovalent ligands. ED-MS resolves structures of the natural product, epoxide-based cysteine protease inhibitor E-64, and its biosynthetic analogs bound to the model cysteine protease, papain. It further identifies papain binding to its preferred natural products, by showing that two analogs of E-64 outcompete others in binding to papain crystals, and by detecting papain bound to E-64 and an analog from crude biosynthetic reactions, without purification. ED-MS also resolves binding of the CTX-M-14 β-lactamase, a target of active drug development, to the non-β-lactam inhibitor, avibactam, alone or in a cocktail of unrelated compounds. These results illustrate the utility of ED-MS for natural product ligand discovery and for structure-based screening of small molecule binders to macromolecular targets, promising utility for drug discovery. | ||||||||||||
履歴 |
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構造の表示
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 | ![]() | 41.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 25.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 497.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 498 KB | 表示 | |
XML形式データ | ![]() | 7.9 KB | 表示 | |
CIF形式データ | ![]() | 9.6 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 9nbpC ![]() 9nbqC ![]() 9nc1C ![]() 9ncaC ![]() 9nccC ![]() 9oqeC ![]() 9or3C ![]() 9or7C ![]() 9orbC ![]() 9orgC ![]() 9orhC ![]() 9orlC ![]() 9orsC ![]() 9orvC ![]() 9orwC ![]() 9orxC ![]() 9oryC ![]() 9orzC ![]() 9os1C ![]() 9os8C 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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単位格子 |
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要素
#1: タンパク質 | 分子量: 14331.160 Da / 分子数: 1 / 断片: lyzozyme / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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#2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
#3: 化合物 | ChemComp-NA / |
#4: 水 | ChemComp-HOH / |
研究の焦点であるリガンドがあるか | Y |
Has protein modification | Y |
-実験情報
-実験
実験 | 手法: 電子線結晶学 |
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EM実験 | 試料の集合状態: 3D ARRAY / 3次元再構成法: 電子線結晶学 |
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試料調製
構成要素 | 名称: Lysozyme bound to N,N',N"-triacetylchitotriose / タイプ: COMPLEX 詳細: Crystals formed by vapor diffusion in sitting drops, from 80 mg/mL lysozyme mixed 1:1 with reservoir solution (800 mM NaCl, 80 mM sodium acetate pH 4.8) Entity ID: #1 / 由来: NATURAL |
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由来(天然) | 生物種: ![]() ![]() |
EM crystal formation | 詳細: Crystals formed by vapor diffusion in sitting drops, from 80 mg/mL lysozyme mixed 1:1 with reservoir solution (800 mM NaCl, 80 mM sodium acetate pH 4.8) 温度: 293 K |
緩衝液 | pH: 4.8 / 詳細: 800 mM NaCl, 80 mM sodium acetate pH 4.8 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-データ収集
実験機器 | ![]() モデル: Tecnai F20 / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS TALOS F200C |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: DIFFRACTION / 最大 デフォーカス(公称値): 0 nm / 最小 デフォーカス(公称値): 0 nm |
撮影 | 電子線照射量: 0.09 e/Å2 フィルム・検出器のモデル: DIRECT ELECTRON APOLLO (4k x 4k) |
EM回折 シェル | 解像度: 2.4→2.5 Å / フーリエ空間範囲: 86.5 % / 多重度: 6.5 / 構造因子数: 453 / 位相残差: 22.3 ° |
EM回折 統計 | フーリエ空間範囲: 83.6 % / 再高解像度: 2.4 Å / 測定した強度の数: 24994 / 構造因子数: 4019 / 位相誤差の除外基準: NONE / Rmerge: 0.29 |
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解析
ソフトウェア |
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EM 3D crystal entity | ∠α: 90 ° / ∠β: 90 ° / ∠γ: 90 ° / A: 76.99 Å / B: 76.99 Å / C: 38.22 Å / 空間群名: P43212 / 空間群番号: 96 | ||||||||||||||||||||||||||||
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.4 Å / 解像度の算出法: DIFFRACTION PATTERN/LAYERLINES / 対称性のタイプ: 3D CRYSTAL | ||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 1DPX Accession code: 1DPX / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||
精密化 | 構造決定の手法: ![]()
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溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.1 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||
拘束条件 |
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LS精密化 シェル |
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