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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: 7mex | ||||||
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| タイトル | Structure of yeast Ubr1 in complex with Ubc2 and N-degron | ||||||
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キーワード | TRANSFERASE / Ubiquitin E3 ligase / ubiquitination / Ubr1 / Ubc2 / Degron / N-end rule | ||||||
| 機能・相同性 | 機能・相同性情報MUB1-RAD6-UBR2 ubiquitin ligase complex / RAD6-UBR2 ubiquitin ligase complex / Rad6-Rad18 complex / regulation of dipeptide transport / UBR1-RAD6 ubiquitin ligase complex / sno(s)RNA transcription / proteasome regulatory particle binding / HULC complex / error-free postreplication DNA repair / stress-induced homeostatically regulated protein degradation pathway ...MUB1-RAD6-UBR2 ubiquitin ligase complex / RAD6-UBR2 ubiquitin ligase complex / Rad6-Rad18 complex / regulation of dipeptide transport / UBR1-RAD6 ubiquitin ligase complex / sno(s)RNA transcription / proteasome regulatory particle binding / HULC complex / error-free postreplication DNA repair / stress-induced homeostatically regulated protein degradation pathway / : / meiotic DNA double-strand break formation / ubiquitin-dependent protein catabolic process via the N-end rule pathway / mitochondria-associated ubiquitin-dependent protein catabolic process / cytoplasm protein quality control by the ubiquitin-proteasome system / : / telomere maintenance via recombination / proteasome regulatory particle, base subcomplex / ribosome-associated ubiquitin-dependent protein catabolic process / error-free translesion synthesis / E2 ubiquitin-conjugating enzyme / sporulation resulting in formation of a cellular spore / proteasome binding / ubiquitin conjugating enzyme activity / Antigen processing: Ubiquitination & Proteasome degradation / cellular response to unfolded protein / error-prone translesion synthesis / protein monoubiquitination / ubiquitin ligase complex / subtelomeric heterochromatin formation / ERAD pathway / mitotic G1 DNA damage checkpoint signaling / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / IRAK2 mediated activation of TAK1 complex / Prevention of phagosomal-lysosomal fusion / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Endosomal Sorting Complex Required For Transport (ESCRT) / Membrane binding and targetting of GAG proteins / Negative regulation of FLT3 / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / Constitutive Signaling by NOTCH1 HD Domain Mutants / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / NF-kB is activated and signals survival / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / Pexophagy / Regulation of innate immune responses to cytosolic DNA / NRIF signals cell death from the nucleus / Downregulation of ERBB2:ERBB3 signaling / Regulation of PTEN localization / VLDLR internalisation and degradation / Activated NOTCH1 Transmits Signal to the Nucleus / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Translesion synthesis by REV1 / Regulation of BACH1 activity / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by POLK / InlB-mediated entry of Listeria monocytogenes into host cell / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / Josephin domain DUBs / Translesion synthesis by POLI / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / PINK1-PRKN Mediated Mitophagy / Regulation of activated PAK-2p34 by proteasome mediated degradation / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / TCF dependent signaling in response to WNT / Autodegradation of Cdh1 by Cdh1:APC/C / Regulation of NF-kappa B signaling / APC/C:Cdc20 mediated degradation of Securin / activated TAK1 mediates p38 MAPK activation / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / Regulation of signaling by CBL / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling 類似検索 - 分子機能 | ||||||
| 生物種 | ![]() Homo sapiens (ヒト)![]() | ||||||
| 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: 3.35 Å | ||||||
データ登録者 | Pan, M. / Zheng, Q. / Wang, T. / Liang, L. / Yu, Y. / Liu, L. / Zhao, M. | ||||||
| 資金援助 | 1件
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引用 | ジャーナル: Nature / 年: 2021タイトル: Structural insights into Ubr1-mediated N-degron polyubiquitination. 著者: Man Pan / Qingyun Zheng / Tian Wang / Lujun Liang / Junxiong Mao / Chong Zuo / Ruichao Ding / Huasong Ai / Yuan Xie / Dong Si / Yuanyuan Yu / Lei Liu / Minglei Zhao / ![]() 要旨: The N-degron pathway targets proteins that bear a destabilizing residue at the N terminus for proteasome-dependent degradation. In yeast, Ubr1-a single-subunit E3 ligase-is responsible for the Arg/N- ...The N-degron pathway targets proteins that bear a destabilizing residue at the N terminus for proteasome-dependent degradation. In yeast, Ubr1-a single-subunit E3 ligase-is responsible for the Arg/N-degron pathway. How Ubr1 mediates the initiation of ubiquitination and the elongation of the ubiquitin chain in a linkage-specific manner through a single E2 ubiquitin-conjugating enzyme (Ubc2) remains unknown. Here we developed chemical strategies to mimic the reaction intermediates of the first and second ubiquitin transfer steps, and determined the cryo-electron microscopy structures of Ubr1 in complex with Ubc2, ubiquitin and two N-degron peptides, representing the initiation and elongation steps of ubiquitination. Key structural elements, including a Ubc2-binding region and an acceptor ubiquitin-binding loop on Ubr1, were identified and characterized. These structures provide mechanistic insights into the initiation and elongation of ubiquitination catalysed by Ubr1. | ||||||
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構造の表示
| ムービー |
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| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 7mex.cif.gz | 365.9 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7mex.ent.gz | 288.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7mex.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/me/7mex ftp://data.pdbj.org/pub/pdb/validation_reports/me/7mex | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 23806MC ![]() 7meyC 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 | |
| 電子顕微鏡画像生データ | EMPIAR-10886 (タイトル: Single-particle cryoEM data of yeast Ubr1-Ubc2-Ub-N-degron complex (initiation)Data size: 5.7 TB Data #1: Unaligned movie data of yeast Ubr1-Ubc2-Ub-N-degron complex (initiation complex) [micrographs - multiframe]) |
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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: 8622.922 Da / 分子数: 1 / 変異: G76C / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) / 参照: UniProt: P0CG48 | ||
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| #2: タンパク質 | 分子量: 17203.389 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 株: ATCC 204508 / S288c / 遺伝子: RAD6, UBC2, YGL058W / プラスミド: p416CYC / 発現宿主: ![]() | ||
| #3: タンパク質・ペプチド | 分子量: 4571.223 Da / 分子数: 1 / 由来タイプ: 合成 由来: (合成) ![]() | ||
| #4: タンパク質 | 分子量: 225102.750 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 株: ATCC 204508 / S288c / 遺伝子: UBR1, PTR1, YGR184C, G7168 / プラスミド: p416CYC / 発現宿主: ![]() | ||
| #5: 化合物 | ChemComp-ZN / 研究の焦点であるリガンドがあるか | 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: yeast Ubr1 in complex with Ubc2 and N-degron / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 緩衝液 | pH: 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 |
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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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
| 撮影 | 電子線照射量: 48 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||||||||||
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| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING ONLY | ||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.35 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 232915 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL | ||||||||||||||||||||||||||||||||
| 拘束条件 |
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万見について





Homo sapiens (ヒト)
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