- EMDB-8123: Structure of the Kluyveromyces lactis 80S ribosome in complex wit... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-8123
タイトル
Structure of the Kluyveromyces lactis 80S ribosome in complex with the cricket paralysis virus IRES and eEF2
マップデータ
None
試料
eEF2 != Kluyveromyces lactis 80S ribosome in complex with the cricket paralysis virus IRES and eEF2
eEF2
複合体: Kluyveromyces lactis 80S ribosome in complex with the cricket paralysis virus IRES and eEF2
Other: x 2種
RNA: x 3種
タンパク質・ペプチド: x 78種
複合体: Kluyveromyces lactis 80S ribosome
複合体: Cricket paralysis virus IRES
複合体: eEF2
リガンド: x 4種
機能・相同性
機能・相同性情報
response to cycloheximide / 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) / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / 90S preribosome / protein-RNA complex assembly ...response to cycloheximide / 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) / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / 90S preribosome / protein-RNA complex assembly / 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 / 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 / protein kinase C binding / modification-dependent protein catabolic process / 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 / ribonucleoprotein complex / translation / positive regulation of protein phosphorylation / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / RNA binding / zinc ion binding / nucleus / metal ion binding / cytosol / cytoplasm 類似検索 - 分子機能
60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / : / : / 50S ribosomal protein L10, insertion domain superfamily / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / : / Ribosomal protein S26e signature. / : ...60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / : / : / 50S ribosomal protein L10, insertion domain superfamily / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / : / Ribosomal protein S26e signature. / : / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein S21e / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein L1, conserved site / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / S27a-like superfamily / Ribosomal protein L1 signature. / 40S Ribosomal protein S10 / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein L1 / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein S27a / Ribosomal protein S2, eukaryotic/archaeal / : / : / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / Ribosomal protein L44e signature. / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein L10e / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S7e signature. / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein L19, eukaryotic / Ribosomal protein S3, eukaryotic/archaeal / : / Ribosomal protein S19e / Ribosomal protein S3Ae, conserved site / Ribosomal protein S19e / Ribosomal protein S3Ae signature. / Ribosomal_S19e / Ribosomal protein S27e signature. / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L44e / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein L44 / Ribosomal protein S4e signature. / Ribosomal protein L34e, conserved site / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein S19A/S15e / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal L40e family / Ribosomal protein L30e signature 1. / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein L30e signature 2. 類似検索 - ドメイン・相同性
60S ribosomal protein L8 / Large ribosomal subunit protein eL39 / Small ribosomal subunit protein eS32A / Small ribosomal subunit protein uS11 / Large ribosomal subunit protein eL42 / Small ribosomal subunit protein eS28 / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL23 / Ubiquitin-ribosomal protein eS31 fusion protein ...60S ribosomal protein L8 / Large ribosomal subunit protein eL39 / Small ribosomal subunit protein eS32A / Small ribosomal subunit protein uS11 / Large ribosomal subunit protein eL42 / Small ribosomal subunit protein eS28 / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL23 / Ubiquitin-ribosomal protein eS31 fusion protein / KLLA0F25542p / KLLA0F18040p / Ribosomal protein L15 / Large ribosomal subunit protein uL3 / KLLA0F09812p / KLLA0F08261p / KLLA0F07843p / KLLA0F05247p / KLLA0F04675p / KLLA0F04499p / 40S ribosomal protein S12 / Small ribosomal subunit protein eS6 / KLLA0E23673p / KLLA0E23651p / 40S ribosomal protein S8 / Small ribosomal subunit protein uS2 / KLLA0E12453p / KLLA0E12277p / 40S ribosomal protein S27 / KLLA0E06997p / KLLA0E06843p / KLLA0E05941p / Small ribosomal subunit protein uS14 / KLLA0E03455p / 60S ribosomal protein L29 / KLLA0D16027p / 60S ribosomal protein L36 / KLLA0D10659p / 40S ribosomal protein S3 / KLLA0D07405p / KLLA0D06941p / KLLA0D05643p / KLLA0D05181p / 40S ribosomal protein S26 / KLLA0D03410p / KLLA0C18216p / 40S ribosomal protein S7 / KLLA0C08371p / 40S ribosomal protein S24 / 40S ribosomal protein S30 / Ribosomal protein L37 / KLLA0B13409p / KLLA0B08173p / Small ribosomal subunit protein uS8 / KLLA0B07139p / 40S ribosomal protein S25 / 60S acidic ribosomal protein P0 / KLLA0B05742p / Small ribosomal subunit protein eS1 / KLLA0B04686p / 40S ribosomal protein S4 / KLLA0B02937p / Ribosomal protein / KLLA0B01562p / KLLA0B01474p / KLLA0A10483p / KLLA0A07227p / KLLA0A07194p / KLLA0A06336p / Small ribosomal subunit protein eS21 / 60S ribosomal protein L13 / RPS23 / Small ribosomal subunit protein uS9 / RPL28 / Ubiquitin fusion protein / : 類似検索 - 構成要素
ジャーナル: Elife / 年: 2016 タイトル: Structural characterization of ribosome recruitment and translocation by type IV IRES. 著者: Jason Murray / Christos G Savva / Byung-Sik Shin / Thomas E Dever / V Ramakrishnan / Israel S Fernández / 要旨: Viral mRNA sequences with a type IV IRES are able to initiate translation without any host initiation factors. Initial recruitment of the small ribosomal subunit as well as two translocation steps ...Viral mRNA sequences with a type IV IRES are able to initiate translation without any host initiation factors. Initial recruitment of the small ribosomal subunit as well as two translocation steps before the first peptidyl transfer are essential for the initiation of translation by these mRNAs. Using electron cryomicroscopy (cryo-EM) we have structurally characterized at high resolution how the Cricket Paralysis Virus Internal Ribosomal Entry Site (CrPV-IRES) binds the small ribosomal subunit (40S) and the translocation intermediate stabilized by elongation factor 2 (eEF2). The CrPV-IRES restricts tvhe otherwise flexible 40S head to a conformation compatible with binding the large ribosomal subunit (60S). Once the 60S is recruited, the binary CrPV-IRES/80S complex oscillates between canonical and rotated states (Fernández et al., 2014; Koh et al., 2014), as seen for pre-translocation complexes with tRNAs. Elongation factor eEF2 with a GTP analog stabilizes the ribosome-IRES complex in a rotated state with an extra ~3 degrees of rotation. Key residues in domain IV of eEF2 interact with pseudoknot I (PKI) of the CrPV-IRES stabilizing it in a conformation reminiscent of a hybrid tRNA state. The structure explains how diphthamide, a eukaryotic and archaeal specific post-translational modification of a histidine residue of eEF2, is involved in translocation.