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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: 9dgz | ||||||||||||||||||||||||
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タイトル | The Cryo-EM structure of recombinantly expressed apo hUGDH | ||||||||||||||||||||||||
![]() | UDP-glucose 6-dehydrogenase | ||||||||||||||||||||||||
![]() | OXIDOREDUCTASE / Unliganded human UDP-Glucose Dehydrogenase | ||||||||||||||||||||||||
機能・相同性 | ![]() Formation of the active cofactor, UDP-glucuronate / UDP-glucose 6-dehydrogenase activity / UDP-glucose 6-dehydrogenase / UDP-glucuronate biosynthetic process / glycosaminoglycan biosynthetic process / chondroitin sulfate proteoglycan biosynthetic process / heparan sulfate proteoglycan biosynthetic process / gastrulation with mouth forming second / protein hexamerization / neuron development ...Formation of the active cofactor, UDP-glucuronate / UDP-glucose 6-dehydrogenase activity / UDP-glucose 6-dehydrogenase / UDP-glucuronate biosynthetic process / glycosaminoglycan biosynthetic process / chondroitin sulfate proteoglycan biosynthetic process / heparan sulfate proteoglycan biosynthetic process / gastrulation with mouth forming second / protein hexamerization / neuron development / NAD binding / extracellular exosome / nucleoplasm / identical protein binding / nucleus / cytosol 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: 2.06 Å | ||||||||||||||||||||||||
![]() | Kadirvelraj, R. / Walsh Jr, R.M. / Wood, Z.W. | ||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM Structure of Recombinantly Expressed hUGDH Unveils a Hidden, Alternative Allosteric Inhibitor. 著者: John H O'Brien / Renuka Kadirvelraj / Po-Sen Tseng / Nolan Ross-Kemppinen / David Crich / Richard M Walsh / Zachary A Wood / ![]() 要旨: Human UDP-glucose dehydrogenase (hUGDH) catalyzes the oxidation of UDP-glucose into UDP-glucuronic acid, an essential substrate in the Phase II metabolism of drugs. hUGDH is a hexamer that exists in ...Human UDP-glucose dehydrogenase (hUGDH) catalyzes the oxidation of UDP-glucose into UDP-glucuronic acid, an essential substrate in the Phase II metabolism of drugs. hUGDH is a hexamer that exists in an equilibrium between an active (E) state and an inactive (E) state, with the latter being stabilized by the binding of the allosteric inhibitor UDP-xylose (UDP-Xyl). The allosteric transition between E and E is slow and can be observed as a lag in progress curves. Previous analysis of the lag suggested that unliganded hUGDH exists mainly as E, but two unique crystal forms suggest that the enzyme favors the E state. Resolving this discrepancy is necessary to fully understand the allosteric mechanism of hUGDH. Here, we used cryo-EM to show that recombinant hUGDH expressed in copurifies with UDP-4-keto-xylose (UX4O), which mimics the UDP-Xyl inhibitor and favors the E state. Cryo-EM studies show that removing UX4O from hUGDH shifts the ensemble to favor the E state. This shift is consistent with progress curve analysis, which shows the absence of a lag for unliganded hUGDH. Inhibition studies show that hUGDH has similar affinities for UDP-Xyl and UX4O. The discovery that UX4O inhibits allosteric hUGDH suggests that UX4O may be the physiologically relevant inhibitor of allosteric UGDHs in bacteria that do not make UDP-Xyl. #1: ジャーナル: Acta Crystallogr D Struct Biol / 年: 2019 タイトル: Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix. 著者: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty / ...著者: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty / Robert D Oeffner / Billy K Poon / Michael G Prisant / Randy J Read / Jane S Richardson / David C Richardson / Massimo D Sammito / Oleg V Sobolev / Duncan H Stockwell / Thomas C Terwilliger / Alexandre G Urzhumtsev / Lizbeth L Videau / Christopher J Williams / Paul D Adams / ![]() ![]() ![]() 要旨: Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological ...Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological processes and to develop new therapeutics against diseases. The overall structure-solution workflow is similar for these techniques, but nuances exist because the properties of the reduced experimental data are different. Software tools for structure determination should therefore be tailored for each method. Phenix is a comprehensive software package for macromolecular structure determination that handles data from any of these techniques. Tasks performed with Phenix include data-quality assessment, map improvement, model building, the validation/rebuilding/refinement cycle and deposition. Each tool caters to the type of experimental data. The design of Phenix emphasizes the automation of procedures, where possible, to minimize repetitive and time-consuming manual tasks, while default parameters are chosen to encourage best practice. A graphical user interface provides access to many command-line features of Phenix and streamlines the transition between programs, project tracking and re-running of previous tasks. | ||||||||||||||||||||||||
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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 | ![]() | 959 KB | 表示 | ![]() |
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PDB形式 | ![]() | 822.2 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 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 74.4 KB | 表示 | |
CIF形式データ | ![]() | 120.3 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 | ![]() 46853MC ![]() 9dh0C 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: 55093.938 Da / 分子数: 6 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: 水 | ChemComp-HOH / | 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: Unliganded human UDP-Glucose Dehydrogenase / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.055024 MDa / 実験値: NO | ||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||
緩衝液 | pH: 7.5 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Apo human UGDH in 20 mM Hepes pH 7.5, 100 mM NaCl and 1 mM DTT with Fos-choline-8, fluorinated solution at a final concentration of 0.7 mM was added immediately before plunging to induce more ...詳細: Apo human UGDH in 20 mM Hepes pH 7.5, 100 mM NaCl and 1 mM DTT with Fos-choline-8, fluorinated solution at a final concentration of 0.7 mM was added immediately before plunging to induce more particle orientations. | ||||||||||||||||||||
試料支持 | 詳細: Glow discharged using Pelco Easiglow / 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: Quantifoil R0.6/1 | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 295.15 K |
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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 / 倍率(公称値): 165000 X / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 800 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 |
撮影 | 電子線照射量: 46.44 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: 35333 |
電子光学装置 | エネルギーフィルター名称: TFS Selectris / エネルギーフィルタースリット幅: 10 eV |
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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 | ||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1786206 | ||||||||||||||||||||||||||||||||
対称性 | 点対称性: D3 (2回x3回 2面回転対称) | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.06 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 91822 / 対称性のタイプ: POINT |