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基本情報
登録情報 | データベース: PDB / ID: 9gik | ||||||
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タイトル | Full-lenght Nedd4-2 E3 ubiquitin ligase | ||||||
![]() | Isoform 5 of E3 ubiquitin-protein ligase NEDD4-like | ||||||
![]() | SIGNALING PROTEIN / Nedd4-2 / calcium / 14-3-3 proteins / H/D exchange / Cryo-EM / SAXS / protein-protein interaction | ||||||
機能・相同性 | ![]() negative regulation of sodium ion import across plasma membrane / positive regulation of caveolin-mediated endocytosis / RING-type E3 ubiquitin transferase (cysteine targeting) / negative regulation of sodium ion transmembrane transport / regulation of potassium ion transmembrane transporter activity / negative regulation of potassium ion transmembrane transport / : / negative regulation of potassium ion transmembrane transporter activity / negative regulation of protein localization to cell surface / regulation of membrane repolarization ...negative regulation of sodium ion import across plasma membrane / positive regulation of caveolin-mediated endocytosis / RING-type E3 ubiquitin transferase (cysteine targeting) / negative regulation of sodium ion transmembrane transport / regulation of potassium ion transmembrane transporter activity / negative regulation of potassium ion transmembrane transport / : / negative regulation of potassium ion transmembrane transporter activity / negative regulation of protein localization to cell surface / regulation of membrane repolarization / regulation of sodium ion transmembrane transport / regulation of membrane depolarization / potassium channel inhibitor activity / receptor catabolic process / positive regulation of dendrite extension / ventricular cardiac muscle cell action potential / regulation of monoatomic ion transmembrane transport / HECT-type E3 ubiquitin transferase / sodium channel inhibitor activity / regulation of dendrite morphogenesis / neuromuscular junction development / regulation of synapse organization / sodium channel regulator activity / protein monoubiquitination / potassium channel regulator activity / protein K48-linked ubiquitination / multivesicular body / Downregulation of TGF-beta receptor signaling / regulation of membrane potential / Downregulation of SMAD2/3:SMAD4 transcriptional activity / Budding and maturation of HIV virion / regulation of protein stability / receptor internalization / Stimuli-sensing channels / positive regulation of protein catabolic process / neuron projection development / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / Antigen processing: Ubiquitination & Proteasome degradation / ubiquitin-dependent protein catabolic process / monoatomic ion transmembrane transport / proteasome-mediated ubiquitin-dependent protein catabolic process / transmembrane transporter binding / protein ubiquitination / apical plasma membrane / Golgi apparatus / extracellular exosome / nucleoplasm / cytosol / cytoplasm 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: 3.58 Å | ||||||
![]() | Kosek, D. / Janosev, M. / Obsil, T. / Obsilova, V. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of ubiquitin ligase Nedd4-2 autoinhibition and regulation by calcium and 14-3-3 proteins. 著者: Masa Janosev / Dalibor Kosek / Andrej Tekel / Rohit Joshi / Karolina Honzejkova / Pavel Pohl / Tomas Obsil / Veronika Obsilova / ![]() 要旨: Nedd4-2 E3 ligase regulates Na homeostasis by ubiquitinating various channels and membrane transporters, including the epithelial sodium channel ENaC. In turn, Nedd4-2 dysregulation leads to various ...Nedd4-2 E3 ligase regulates Na homeostasis by ubiquitinating various channels and membrane transporters, including the epithelial sodium channel ENaC. In turn, Nedd4-2 dysregulation leads to various conditions, including electrolytic imbalance, respiratory distress, hypertension, and kidney diseases. However, Nedd4-2 regulation remains mostly unclear. The present study aims at elucidating Nedd4-2 regulation by structurally characterizing Nedd4-2 and its complexes using several biophysical techniques. Our cryo-EM reconstruction shows that the C2 domain blocks the E2-binding surface of the HECT domain. This blockage, ubiquitin-binding exosite masking by the WW1 domain, catalytic C922 blockage and HECT domain stabilization provide the structural basis for Nedd4-2 autoinhibition. Furthermore, Ca-dependent C2 membrane binding disrupts C2/HECT interactions, but not Ca alone, whereas 14-3-3 protein binds to a flexible region of Nedd4-2 containing the WW2 and WW3 domains, thereby inhibiting its catalytic activity and membrane binding. Overall, our data provide key mechanistic insights into Nedd4-2 regulation toward fostering the development of strategies targeting Nedd4-2 function. | ||||||
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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 | ![]() | 134.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 99.8 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 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 35 KB | 表示 | |
CIF形式データ | ![]() | 50.1 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 | ![]() 51373MC ![]() 9gimC 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: 110472.945 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() 参照: UniProt: Q96PU5, HECT-type E3 ubiquitin transferase, RING-type E3 ubiquitin transferase (cysteine targeting) |
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Has protein modification | N |
-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: Nedd4-2 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 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 詳細: 20 mM HEPES pH 7.5, 130 mM KCl, 20 mM NaCl, 1 mM EDTA, 1 mM TCEP, 3mM CHAPSO |
試料 | 濃度: 2.7 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: GOLD / グリッドのタイプ: UltrAuFoil R1.2/1.3 |
急速凍結 | 凍結剤: ETHANE |
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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(補正後): 105000 X / 最大 デフォーカス(公称値): 2800 nm / 最小 デフォーカス(公称値): 700 nm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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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: 3.58 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 225759 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
原子モデル構築 | 空間: REAL | ||||||||||||||||||||||||||||
原子モデル構築 |
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拘束条件 |
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