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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Mammalian 80S translation initiation complex with mRNA and Harringtonine | |||||||||
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![]() | Mammalian / 80S / initiation / complex / mRNA modification / Harringtonine / RIBOSOME-INHIBITOR complex | |||||||||
機能・相同性 | ![]() ribosomal subunit / ubiquitin ligase inhibitor activity / positive regulation of signal transduction by p53 class mediator / phagocytic cup / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / translation regulator activity / gastrulation / MDM2/MDM4 family protein binding / cytosolic ribosome ...ribosomal subunit / ubiquitin ligase inhibitor activity / positive regulation of signal transduction by p53 class mediator / phagocytic cup / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / translation regulator activity / gastrulation / MDM2/MDM4 family protein binding / cytosolic ribosome / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / positive regulation of apoptotic signaling pathway / maturation of SSU-rRNA / small-subunit processome / spindle / rRNA processing / antimicrobial humoral immune response mediated by antimicrobial peptide / rhythmic process / large ribosomal subunit / regulation of translation / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / defense response to Gram-negative bacterium / cytosolic large ribosomal subunit / killing of cells of another organism / perikaryon / cytoplasmic translation / cell differentiation / tRNA binding / mitochondrial inner membrane / rRNA binding / postsynaptic density / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / cell division / DNA repair / mRNA binding / apoptotic process / synapse / dendrite / nucleolus / perinuclear region of cytoplasm / endoplasmic reticulum / DNA binding / RNA binding / zinc ion binding / nucleus / membrane / 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 | |||||||||
![]() | Yang R / Arango D / Sturgill D / Oberdoerffer S | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Direct epitranscriptomic regulation of mammalian translation initiation through N4-acetylcytidine. 著者: Daniel Arango / David Sturgill / Renbin Yang / Tapan Kanai / Paulina Bauer / Jyoti Roy / Ziqiu Wang / Masaki Hosogane / Sarah Schiffers / Shalini Oberdoerffer / ![]() 要旨: mRNA function is influenced by modifications that modulate canonical nucleobase behavior. We show that a single modification mediates distinct impacts on mRNA translation in a position-dependent ...mRNA function is influenced by modifications that modulate canonical nucleobase behavior. We show that a single modification mediates distinct impacts on mRNA translation in a position-dependent manner. Although cytidine acetylation (ac4C) within protein-coding sequences stimulates translation, ac4C within 5' UTRs impacts protein synthesis at the level of initiation. 5' UTR acetylation promotes initiation at upstream sequences, competitively inhibiting annotated start codons. Acetylation further directly impedes initiation at optimal AUG contexts: ac4C within AUG-flanking Kozak sequences reduced initiation in base-resolved transcriptome-wide HeLa results and in vitro utilizing substrates with site-specific ac4C incorporation. Cryo-EM of mammalian 80S initiation complexes revealed that ac4C in the -1 position adjacent to an AUG start codon disrupts an interaction between C and hypermodified t6A at nucleotide 37 of the initiator tRNA. These findings demonstrate the impact of RNA modifications on nucleobase function at a molecular level and introduce mRNA acetylation as a factor regulating translation in a location-specific manner. | |||||||||
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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 | ![]() | 36.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 91.6 KB 91.6 KB | 表示 表示 | ![]() |
画像 | ![]() | 71.9 KB | ||
Filedesc metadata | ![]() | 19.1 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 401.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 401 KB | 表示 | |
XML形式データ | ![]() | 7.7 KB | 表示 | |
CIF形式データ | ![]() | 8.9 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 | ![]() 7ucjMC ![]() 7uckC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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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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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.358 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 : 80S translation initiation complex with C(-1) mRNA and Harringtonine
+超分子 #1: 80S translation initiation complex with C(-1) mRNA and Harringtonine
+分子 #1: P-site tRNA
+分子 #2: mRNA
+分子 #3: 28s rRNA
+分子 #4: 5S rRNA
+分子 #5: 5.8S rRNA
+分子 #6: 18S rRNA
+分子 #7: 60S ribosomal protein L8
+分子 #8: 60S ribosomal protein L3
+分子 #9: 60S ribosomal protein L4
+分子 #10: Ribosomal_L18_c domain-containing protein
+分子 #11: 60S ribosomal protein L6
+分子 #12: 60S ribosomal protein L7
+分子 #13: 60S ribosomal protein L7a
+分子 #14: 60S ribosomal protein L9
+分子 #15: Ribosomal protein L10
+分子 #16: 60S ribosomal protein L11
+分子 #17: 60S ribosomal protein L13
+分子 #18: 60S ribosomal protein L14
+分子 #19: 60S ribosomal protein L15
+分子 #20: 60S ribosomal protein L13a
+分子 #21: 60S ribosomal protein L17
+分子 #22: 60S ribosomal protein L18
+分子 #23: 60S ribosomal protein L19
+分子 #24: 60S ribosomal protein L18a
+分子 #25: 60S ribosomal protein L21
+分子 #26: 60S ribosomal protein L22
+分子 #27: 60S ribosomal protein L23
+分子 #28: Ribosomal protein L24
+分子 #29: 60S ribosomal protein L23a
+分子 #30: 60S ribosomal protein L26
+分子 #31: 60S ribosomal protein L27
+分子 #32: 60S ribosomal protein L27a
+分子 #33: 60S ribosomal protein L29
+分子 #34: 60S ribosomal protein L30
+分子 #35: 60S ribosomal protein L31
+分子 #36: 60S ribosomal protein L32
+分子 #37: 60S ribosomal protein L35a
+分子 #38: 60S ribosomal protein L34
+分子 #39: 60S ribosomal protein L35
+分子 #40: 60S ribosomal protein L36
+分子 #41: 60S ribosomal protein L37
+分子 #42: 60S ribosomal protein L38
+分子 #43: 60S ribosomal protein L39
+分子 #44: 60S ribosomal protein L40
+分子 #45: eL41
+分子 #46: 60S ribosomal protein L36a
+分子 #47: 60S ribosomal protein L37a
+分子 #48: 60S ribosomal protein L28
+分子 #49: 40S_SA_C domain-containing protein
+分子 #50: 40S ribosomal protein S3a
+分子 #51: 40S ribosomal protein S2
+分子 #52: 40S ribosomal protein S3
+分子 #53: 40S ribosomal protein S4
+分子 #54: Ribosomal protein S5
+分子 #55: 40S ribosomal protein S6
+分子 #56: 40S ribosomal protein S7
+分子 #57: 40S ribosomal protein S8
+分子 #58: 40S ribosomal protein S9
+分子 #59: 40S ribosomal protein S10
+分子 #60: 40S ribosomal protein S11
+分子 #61: 40S ribosomal protein S13
+分子 #62: 40S ribosomal protein S14
+分子 #63: 40S ribosomal protein S15
+分子 #64: 40S ribosomal protein S16
+分子 #65: 40S ribosomal protein S17
+分子 #66: 40S ribosomal protein S18
+分子 #67: 40S ribosomal protein S19
+分子 #68: 40S ribosomal protein S20
+分子 #69: eS21
+分子 #70: 40S ribosomal protein S15a
+分子 #71: 40S ribosomal protein S23
+分子 #72: 40S ribosomal protein S24
+分子 #73: 40S ribosomal protein S25
+分子 #74: eS26
+分子 #75: 40S ribosomal protein S27
+分子 #76: 40S ribosomal protein S28
+分子 #77: 40S ribosomal protein S29
+分子 #78: 40S ribosomal protein S30
+分子 #79: Receptor of activated protein C kinase 1
+分子 #80: MAGNESIUM ION
+分子 #81: Harringtonine
+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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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 K2 SUMMIT (4k x 4k) 平均電子線量: 50.0 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: OTHER / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.0 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: OTHER / 詳細: By 3D volumes from negative staining dataset. |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 52555 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
-原子モデル構築 1
精密化 | 空間: REAL |
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得られたモデル | ![]() PDB-7ucj: |