+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-24936 | |||||||||
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タイトル | CryoEM map of yeast Ubr1 | |||||||||
マップデータ | ||||||||||
試料 |
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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 / HULC complex / error-free postreplication DNA repair / proteasome regulatory particle binding / stress-induced homeostatically regulated protein degradation pathway / ubiquitin-dependent protein catabolic process via the N-end rule pathway ...MUB1-RAD6-UBR2 ubiquitin ligase complex / RAD6-UBR2 ubiquitin ligase complex / Rad6-Rad18 complex / regulation of dipeptide transport / UBR1-RAD6 ubiquitin ligase complex / HULC complex / error-free postreplication DNA repair / proteasome regulatory particle binding / stress-induced homeostatically regulated protein degradation pathway / ubiquitin-dependent protein catabolic process via the N-end rule pathway / meiotic DNA double-strand break formation / cytoplasm protein quality control by the ubiquitin-proteasome system / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / mitochondria-associated ubiquitin-dependent protein catabolic process / E3 ubiquitin ligases ubiquitinate target proteins / telomere maintenance via recombination / Antigen processing: Ubiquitination & Proteasome degradation / proteasome regulatory particle, base subcomplex / ribosome-associated ubiquitin-dependent protein catabolic process / DNA duplex unwinding / ユビキチン結合酵素 / sporulation resulting in formation of a cellular spore / error-free translesion synthesis / proteasome binding / ERAD pathway / protein monoubiquitination / ubiquitin conjugating enzyme activity / subtelomeric heterochromatin formation / error-prone translesion synthesis / ubiquitin ligase complex / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / グリコーゲン合成 / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / mitotic G1 DNA damage checkpoint signaling / Endosomal Sorting Complex Required For Transport (ESCRT) / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Negative regulation of FLT3 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of FZD by ubiquitination / TICAM1,TRAF6-dependent induction of TAK1 complex / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / p75NTR recruits signalling complexes / Downregulation of ERBB4 signaling / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / APC-Cdc20 mediated degradation of Nek2A / PINK1-PRKN Mediated Mitophagy / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Pexophagy / Regulation of innate immune responses to cytosolic DNA / VLDLR internalisation and degradation / InlA-mediated entry of Listeria monocytogenes into host cells / Downregulation of ERBB2:ERBB3 signaling / NF-kB is activated and signals survival / NRIF signals cell death from the nucleus / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of BACH1 activity / Translesion synthesis by REV1 / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Translesion synthesis by POLK / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Downregulation of TGF-beta receptor signaling / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / Josephin domain DUBs / Regulation of activated PAK-2p34 by proteasome mediated degradation / InlB-mediated entry of Listeria monocytogenes into host cell / IKK complex recruitment mediated by RIP1 / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Autodegradation of Cdh1 by Cdh1:APC/C / TNFR1-induced NF-kappa-B signaling pathway / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / SCF-beta-TrCP mediated degradation of Emi1 / TCF dependent signaling in response to WNT / NIK-->noncanonical NF-kB signaling / Regulation of NF-kappa B signaling / Ubiquitin-dependent degradation of Cyclin D / AUF1 (hnRNP D0) binds and destabilizes mRNA / TNFR2 non-canonical NF-kB pathway / activated TAK1 mediates p38 MAPK activation / Assembly of the pre-replicative complex / Vpu mediated degradation of CD4 / NOTCH3 Activation and Transmission of Signal to the Nucleus 類似検索 - 分子機能 | |||||||||
生物種 | Saccharomyces cerevisiae (パン酵母) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 7.69 Å | |||||||||
データ登録者 | Pan M / Zheng Q / 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. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_24936.map.gz | 40.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-24936-v30.xml emd-24936.xml | 13.3 KB 13.3 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_24936.png | 76.2 KB | ||
その他 | emd_24936_half_map_1.map.gz emd_24936_half_map_2.map.gz | 40.8 MB 40.7 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-24936 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-24936 | HTTPS FTP |
-関連構造データ
関連構造データ | 7mexC 7meyC C: 同じ文献を引用 (文献) |
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類似構造データ | |
電子顕微鏡画像生データ | EMPIAR-10905 (タイトル: Single-particle cryoEM data of yeast Ubr1 (apo) Data size: 3.2 TB Data #1: Unaligned movie data of yeast Ubr1 (apo) [micrographs - multiframe]) |
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_24936.map.gz / 形式: CCP4 / 大きさ: 52.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1.122 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-ハーフマップ: #1
ファイル | emd_24936_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_24936_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : yeast Ubr1
全体 | 名称: yeast Ubr1 |
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要素 |
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-超分子 #1: yeast Ubr1
超分子 | 名称: yeast Ubr1 / タイプ: complex / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) |
組換発現 | 生物種: Saccharomyces cerevisiae (パン酵母) |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm |
撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 48.0 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
CTF補正 | ソフトウェア - 名称: CTFFIND |
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初期モデル | モデルのタイプ: OTHER / 詳細: SGD implemented in RELION |
初期 角度割当 | タイプ: RANDOM ASSIGNMENT / ソフトウェア - 名称: RELION (ver. 3.2) |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.2) |
最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 7.69 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.2) / 使用した粒子像数: 30415 |