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基本情報
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タイトル | Hypopseudouridylated yeast 80S bound with Taura syndrome virus (TSV) internal ribosome entry site (IRES), Structure II | |||||||||
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![]() | rRNA pseudouridylation / IRES initiation / confomation / eEF2. / RIBOSOME | |||||||||
機能・相同性 | ![]() ribosomal subunit / negative regulation of glucose mediated signaling pathway / negative regulation of translational frameshifting / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / nonfunctional rRNA decay / pre-mRNA 5'-splice site binding / Formation of the ternary complex, and subsequently, the 43S complex ...ribosomal subunit / negative regulation of glucose mediated signaling pathway / negative regulation of translational frameshifting / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / nonfunctional rRNA decay / pre-mRNA 5'-splice site binding / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Formation of a pool of free 40S subunits / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of mRNA splicing, via spliceosome / L13a-mediated translational silencing of Ceruloplasmin expression / regulation of cellular amino acid metabolic process / preribosome, large subunit precursor / translational elongation / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / 90S preribosome / positive regulation of protein kinase activity / protein-RNA complex assembly / regulation of translational fidelity / ribosomal subunit export from nucleus / translation regulator activity / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / cellular response to amino acid starvation / rescue of stalled ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of apoptotic signaling pathway / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / maturation of SSU-rRNA / small-subunit processome / translational initiation / macroautophagy / protein kinase C binding / maintenance of translational fidelity / modification-dependent protein catabolic process / cytoplasmic stress granule / rRNA processing / protein tag activity / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / 5S rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / rRNA binding / negative regulation of translation / ribosome / protein ubiquitination / structural constituent of ribosome / translation / positive regulation of protein phosphorylation / G protein-coupled receptor signaling pathway / negative regulation of gene expression / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm / cytosol 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: 2.45 Å | |||||||||
![]() | Zhao Y / Rai J / Li H | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Regulation of translation by ribosomal RNA pseudouridylation. 著者: Yu Zhao / Jay Rai / Hong Li / ![]() 要旨: Pseudouridine is enriched in ribosomal, spliceosomal, transfer, and messenger RNA and thus integral to the central dogma. The chemical basis for how pseudouridine affects the molecular apparatus such ...Pseudouridine is enriched in ribosomal, spliceosomal, transfer, and messenger RNA and thus integral to the central dogma. The chemical basis for how pseudouridine affects the molecular apparatus such as ribosome, however, remains elusive owing to the lack of structures without this natural modification. Here, we studied the translation of a hypopseudouridylated ribosome initiated by the internal ribosome entry site (IRES) elements. We analyzed eight cryo-electron microscopy structures of the ribosome bound with the Taura syndrome virus IRES in multiple functional states. We found widespread loss of pseudouridine-mediated interactions through water and long-range base pairings. In the presence of the translocase, eukaryotic elongation factor 2, and guanosine 5'-triphosphate hydrolysis, the hypopseudouridylated ribosome favors a rare unconducive conformation for decoding that is partially recouped in the ribosome population that remains modified at the P-site uridine. The structural principles learned establish the link between functional defects and modification loss and are likely applicable to other pseudouridine-associated processes. | |||||||||
履歴 |
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マップデータ | ![]() | 230.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 100.1 KB 100.1 KB | 表示 表示 | ![]() |
画像 | ![]() | 121.1 KB | ||
その他 | ![]() ![]() | 226.5 MB 226.5 MB | ||
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 | ![]() 8ewcMC ![]() 8eubC ![]() 8evpC ![]() 8evqC ![]() 8evrC ![]() 8evsC ![]() 8evtC ![]() 8ewbC 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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ボクセルのサイズ | X=Y=Z: 1.06 Å | ||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #2
ファイル | emd_28643_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: #1
ファイル | emd_28643_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 |
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試料の構成要素
+全体 : Hypopseudouridylated ribosome with TSV IRES, eEF2 and GDP
+超分子 #1: Hypopseudouridylated ribosome with TSV IRES, eEF2 and GDP
+分子 #1: 40S ribosomal protein S0-A
+分子 #2: RPS1A isoform 1
+分子 #3: RPS2 isoform 1
+分子 #4: 40S ribosomal protein S4-A
+分子 #5: 40S ribosomal protein S6-A
+分子 #6: 40S ribosomal protein S7-A
+分子 #7: 40S ribosomal protein S8-A
+分子 #8: 40S ribosomal protein S9-A
+分子 #9: 40S ribosomal protein S11-A
+分子 #10: 40S ribosomal protein S13
+分子 #11: 40S ribosomal protein S14-A
+分子 #12: 40S ribosomal protein S21-A
+分子 #13: RPS22A isoform 1
+分子 #14: 40S ribosomal protein S23-A
+分子 #15: 40S ribosomal protein S24-A
+分子 #16: RPS26B isoform 1
+分子 #17: 40S ribosomal protein S27-A
+分子 #18: 40S ribosomal protein S30-A
+分子 #19: RPS3 isoform 1
+分子 #20: Rps5p
+分子 #21: 40S ribosomal protein S10-A
+分子 #22: RPS15 isoform 1
+分子 #23: 40S ribosomal protein S16-A
+分子 #24: 40S ribosomal protein S17-A
+分子 #25: 40S ribosomal protein S18-A
+分子 #26: 40S ribosomal protein S19-A
+分子 #27: RPS20 isoform 1
+分子 #28: RPS25A isoform 1
+分子 #29: RPS28A isoform 1
+分子 #30: RPS29A isoform 1
+分子 #31: Guanine nucleotide-binding protein subunit beta-like protein
+分子 #32: Ubiquitin-40S ribosomal protein S31
+分子 #33: 40S ribosomal protein S12
+分子 #35: 60S ribosomal protein L2-A
+分子 #36: 60S ribosomal protein L3
+分子 #37: RPL4A isoform 1
+分子 #41: RPL5 isoform 1
+分子 #42: 60S ribosomal protein L6-A
+分子 #43: 60S ribosomal protein L7-A
+分子 #44: 60S ribosomal protein L8-A
+分子 #45: 60S ribosomal protein L9-A
+分子 #46: RPL10 isoform 1
+分子 #47: RPL11A isoform 1
+分子 #48: 60S ribosomal protein L13-A
+分子 #49: 60S ribosomal protein L14-A
+分子 #50: 60S ribosomal protein L15-A
+分子 #51: 60S ribosomal protein L16-A
+分子 #52: 60S ribosomal protein L17-A
+分子 #53: 60S ribosomal protein L18-A
+分子 #54: 60S ribosomal protein L19-A
+分子 #55: 60S ribosomal protein L20
+分子 #56: 60S ribosomal protein L21-A
+分子 #57: 60S ribosomal protein L22-A
+分子 #58: 60S ribosomal protein L23-A
+分子 #59: RPL24A isoform 1
+分子 #60: 60S ribosomal protein L25
+分子 #61: 60S ribosomal protein L26-A
+分子 #62: 60S ribosomal protein L27-A
+分子 #63: 60S ribosomal protein L28
+分子 #64: RPL29 isoform 1
+分子 #65: 60S ribosomal protein L30
+分子 #66: 60S ribosomal protein L31-A
+分子 #67: RPL32 isoform 1
+分子 #68: 60S ribosomal protein L33-A
+分子 #69: 60S ribosomal protein L34-A
+分子 #70: 60S ribosomal protein L35-A
+分子 #71: 60S ribosomal protein L36-A
+分子 #72: 60S ribosomal protein L37-A
+分子 #73: RPL38 isoform 1
+分子 #74: 60S ribosomal protein L39
+分子 #75: Ubiquitin-60S ribosomal protein L40
+分子 #76: 60S ribosomal protein L41-A
+分子 #77: 60S ribosomal protein L42-A
+分子 #78: 60S ribosomal protein L43-A
+分子 #79: RPL1A isoform 1
+分子 #34: 18S rRNA
+分子 #38: 25S rRNA
+分子 #39: 5s rRNA
+分子 #40: 5.8 S rRNA
+分子 #80: internal ribosome entry site (IRES)
+分子 #81: MAGNESIUM ION
+分子 #82: 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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糖包埋 | 材質: carbon |
凍結 | 凍結剤: ETHANE |
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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: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 60.0 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): 2.5 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 2.45 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 94694 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |