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データを開く
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Gcn2 dimer bound to the 60S ribosomal subunit | |||||||||
![]() | RELION PostProcess output, main map | |||||||||
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![]() | LSU / 60S / Gcn2 / RIBOSOME | |||||||||
機能・相同性 | ![]() cellular response to histidine / regulation of cytoplasmic translational initiation in response to stress / positive regulation of translational initiation in response to starvation / GCN2-mediated signaling / eukaryotic translation initiation factor 2alpha kinase activity / negative regulation of translational initiation in response to stress / positive regulation of cellular response to amino acid starvation / regulation of translational initiation / regulation of polysaccharide biosynthetic process / transporter complex ...cellular response to histidine / regulation of cytoplasmic translational initiation in response to stress / positive regulation of translational initiation in response to starvation / GCN2-mediated signaling / eukaryotic translation initiation factor 2alpha kinase activity / negative regulation of translational initiation in response to stress / positive regulation of cellular response to amino acid starvation / regulation of translational initiation / regulation of polysaccharide biosynthetic process / transporter complex / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide / protein kinase inhibitor activity / lipopolysaccharide transport / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression / Gram-negative-bacterium-type cell outer membrane assembly / ribosomal large subunit export from nucleus / translational elongation / regulation of translational fidelity / protein-RNA complex assembly / maturation of LSU-rRNA / translational termination / translation initiation factor binding / cytosolic ribosome / cellular response to amino acid starvation / DNA damage checkpoint signaling / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / macroautophagy / translational initiation / modification-dependent protein catabolic process / protein tag activity / maintenance of translational fidelity / cell outer membrane / rRNA processing / ribosome biogenesis / double-stranded RNA binding / large ribosomal subunit / ribosome binding / protein autophosphorylation / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / protein phosphorylation / non-specific serine/threonine protein kinase / protein ubiquitination / protein kinase activity / negative regulation of translation / rRNA binding / intracellular signal transduction / structural constituent of ribosome / ribosome / translation / response to antibiotic / protein serine kinase activity / mRNA binding / ubiquitin protein ligase binding / nucleolus / protein homodimerization activity / RNA binding / zinc ion binding / ATP binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.1 Å | |||||||||
![]() | Paternoga H / Dimitrova-Paternoga L / Wilson DN | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of a Gcn2 dimer in complex with the large 60S ribosomal subunit. 著者: Helge Paternoga / Lu Xia / Lyudmila Dimitrova-Paternoga / Sihan Li / Liewei L Yan / Malte Oestereich / Sergo Kasvandik / Ankanahalli N Nanjaraj Urs / Bertrand Beckert / Tanel Tenson / Hani ...著者: Helge Paternoga / Lu Xia / Lyudmila Dimitrova-Paternoga / Sihan Li / Liewei L Yan / Malte Oestereich / Sergo Kasvandik / Ankanahalli N Nanjaraj Urs / Bertrand Beckert / Tanel Tenson / Hani Zaher / Toshifumi Inada / Daniel N Wilson / ![]() ![]() ![]() ![]() ![]() 要旨: The integrated stress response (ISR) is a central signaling network that enables eukaryotic cells to respond to a variety of different environmental stresses. Such stresses cause ribosome collisions ...The integrated stress response (ISR) is a central signaling network that enables eukaryotic cells to respond to a variety of different environmental stresses. Such stresses cause ribosome collisions that lead to activation of the kinase Gcn2, resulting in the phosphorylation and inactivation of eukaryotic initiation factor 2 and thereby promoting selective translation of mRNAs to restore homeostasis. Despite the importance of the ISR and intensive study over the past decades, structural insight into how Gcn2 interacts with ribosomal particles has been lacking. Using ex vivo affinity purification approaches, we have obtained a cryoelectron microscopy structure of a yeast Gcn2 dimer in complex with the ribosomal 60S subunit. The Gcn2 dimer is formed by dimerization of the histidine tRNA synthetase-like domains, which establish extensive interactions with the stalk-base and sarcin-ricin loop of the 60S subunit. The C-terminal domain of Gcn2 is also dimerized and occupies the A- and P-site tRNA binding sites at the peptidyl-transferase center of the 60S subunit. Complementary functional studies indicate that binding of Gcn2 to the 60S subunit does not require the coactivators Gcn1 or Gcn20, nor does it lead to phosphorylation of eIF2α. Instead, upon stress, we observe a shift of Gcn2 from the 60S subunit into the colliding ribosome fraction, suggesting that the Gcn2-60S complex represents an inactive stand-by state to enable a rapid redistribution to collided ribosomes, and thereby facilitating a quick and efficient response to stress. | |||||||||
履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 33.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 76.9 KB 76.9 KB | 表示 表示 | ![]() |
画像 | ![]() | 105.9 KB | ||
マスクデータ | ![]() | 216 MB | ![]() | |
Filedesc metadata | ![]() | 15.2 KB | ||
その他 | ![]() ![]() ![]() ![]() ![]() ![]() | 160.5 MB 22.9 MB 156.2 MB 171.2 MB 171.2 MB 171.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 15.3 KB | 表示 | |
CIF形式データ | ![]() | 18.4 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 | ![]() 9f58MC M: このマップから作成された原子モデル 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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注釈 | RELION PostProcess output, main map | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.03 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
+全体 : 60S ribosomal subunit with bound Gcn2 dimer
+超分子 #1: 60S ribosomal subunit with bound Gcn2 dimer
+分子 #1: eIF-2-alpha kinase GCN2
+分子 #2: Large ribosomal subunit protein eL41B
+分子 #5: 60S ribosomal protein L3
+分子 #6: 60S ribosomal protein L5
+分子 #7: 60S ribosomal protein L6-A
+分子 #8: 60S ribosomal protein L7-A
+分子 #9: 60S ribosomal protein L8-A
+分子 #10: 60S ribosomal protein L9-A
+分子 #11: 60S ribosomal protein L10
+分子 #12: 60S ribosomal protein L11-A
+分子 #13: 60S ribosomal protein L13-A
+分子 #14: 60S ribosomal protein L14-A
+分子 #15: 60S ribosomal protein L15-A
+分子 #16: 60S ribosomal protein L16-A
+分子 #17: 60S ribosomal protein L17-A
+分子 #18: 60S ribosomal protein L18-A
+分子 #19: 60S ribosomal protein L19-A
+分子 #20: 60S ribosomal protein L20-A
+分子 #21: 60S ribosomal protein L21-A
+分子 #22: 60S ribosomal protein L22-A
+分子 #23: 60S ribosomal protein L23-A
+分子 #24: 60S ribosomal protein L24-A
+分子 #25: 60S ribosomal protein L25
+分子 #26: 60S ribosomal protein L26-A
+分子 #27: 60S ribosomal protein L27-A
+分子 #28: 60S ribosomal protein L28
+分子 #29: 60S ribosomal protein L29
+分子 #30: 60S ribosomal protein L30
+分子 #31: 60S ribosomal protein L31-A
+分子 #32: 60S ribosomal protein L32
+分子 #33: 60S ribosomal protein L33-A
+分子 #34: 60S ribosomal protein L35-A
+分子 #35: 60S ribosomal protein L36-A
+分子 #36: 60S ribosomal protein L37-A
+分子 #37: 60S ribosomal protein L38
+分子 #38: 60S ribosomal protein L39
+分子 #39: Ubiquitin-60S ribosomal protein L40
+分子 #40: 60S ribosomal protein L42-A
+分子 #41: 60S ribosomal protein L43-A
+分子 #42: 60S ribosomal protein L4-A
+分子 #43: 60S ribosomal protein L34-A
+分子 #44: 60S ribosomal protein L2-A
+分子 #3: 5.8S rRNA
+分子 #4: 5S rRNA
+分子 #45: 25S rRNA
+分子 #46: ZINC ION
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.5 |
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グリッド | モデル: Quantifoil R3/3 / 材質: COPPER / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: CONTINUOUS / 支持フィルム - Film thickness: 3 |
凍結 | 凍結剤: ETHANE-PROPANE / チャンバー内湿度: 100 % |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 40.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 0.9 µm / 最小 デフォーカス(公称値): 0.4 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |