- EMDB-14751: Rabbit 80S ribosome as it decodes the Sec-UGA codon -
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Basic information
Entry
Database: EMDB / ID: EMD-14751
Title
Rabbit 80S ribosome as it decodes the Sec-UGA codon
Map data
Sample
Complex: 80S-Selenosome
Complex: eEFSec and SECIS Binding Protein 2
Protein or peptide: x 2 types
Complex: Ser-tRNA-Sec
RNA: x 1 types
Complex: CrPV IRES
RNA: x 1 types
Complex: GPX4 SECIS element
RNA: x 1 types
Complex: 80S Ribosome
RNA: x 4 types
Protein or peptide: x 77 types
Ligand: x 7 types
Keywords
Selenocysteine / recoding / 80S / RIBOSOME
Function / homology
Function and homology information
forebrain neuron development / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / negative regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / selenocysteine incorporation / selenocysteine insertion sequence binding / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression ...forebrain neuron development / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / negative regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / selenocysteine incorporation / selenocysteine insertion sequence binding / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / 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) / striatum development / RNA catabolic process / negative regulation of RNA splicing / mRNA stabilization / rRNA modification in the nucleus and cytosol / negative regulation of bicellular tight junction assembly / Formation of the ternary complex, and subsequently, the 43S complex / organelle membrane / Ribosomal scanning and start codon recognition / laminin receptor activity / Translation initiation complex formation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / TOR signaling / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / cellular response to ethanol / Eukaryotic Translation Termination / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / Viral mRNA Translation / 90S preribosome / ubiquitin ligase inhibitor activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / ribonucleoprotein complex binding / GTP hydrolysis and joining of the 60S ribosomal subunit / translation elongation factor activity / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / protein-RNA complex assembly / maturation of LSU-rRNA / Nuclear events stimulated by ALK signaling in cancer / translation regulator activity / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / laminin binding / gastrulation / MDM2/MDM4 family protein binding / cytosolic ribosome / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / ribosomal large subunit biogenesis / 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) / mRNA 3'-UTR binding / maturation of SSU-rRNA / small-subunit processome / response to insulin / GABA-ergic synapse / mRNA 5'-UTR binding / spindle / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / rRNA processing / positive regulation of canonical Wnt signaling pathway / regulation of translation / antimicrobial humoral immune response mediated by antimicrobial peptide / heparin binding / glucose homeostasis / large ribosomal subunit / ribosomal small subunit assembly / presynapse / virus receptor activity / ribosome binding / ribosomal small subunit biogenesis / cell body / 5S rRNA binding / small ribosomal subunit / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / killing of cells of another organism / cytosolic large ribosomal subunit / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / defense response to Gram-negative bacterium / SARS-CoV-2 modulates host translation machinery / perikaryon / cytoplasmic translation / cell differentiation / tRNA binding Similarity search - Function
Selenocysteine insertion sequence-binding protein 2 / : / : / eEFSec C-terminal RIFT domain / Selenocysteine-specific elongation factor, eukaryotes, 3rd domain / : / 60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / : / 40S ribosomal protein SA ...Selenocysteine insertion sequence-binding protein 2 / : / : / eEFSec C-terminal RIFT domain / Selenocysteine-specific elongation factor, eukaryotes, 3rd domain / : / 60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / : / 40S ribosomal protein SA / Ribosomal protein L6, N-terminal / 40S ribosomal protein SA, C-terminal domain / Ribosomal protein L6, N-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / 50S ribosomal protein L10, insertion domain superfamily / Ribosomal protein L30e / Ribosomal L15/L27a, N-terminal / Ribosomal protein L28e / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / : / Ribosomal protein L23 / Ribosomal protein L2, archaeal-type / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / Ribosomal protein L1, conserved site / Ribosomal protein L1 signature. / Ribosomal protein L1 / metallochaperone-like domain / TRASH domain / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / : / Ribosomal protein S12e signature. / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S12e / Translation elongation factor EFTu-like, domain 2 / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein L1-like / Ribosomal protein L1/ribosomal biogenesis protein / Ribosomal protein L1p/L10e family / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein S2, eukaryotic / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / S27a-like superfamily / Ribosomal protein L19, eukaryotic / Ribosomal protein L10e, conserved site / : / Ribosomal protein L10e signature. / Ribosomal protein L19/L19e conserved site / Ribosomal protein L19e signature. / Ribosomal protein L6e signature. / Ribosomal protein L44e signature. / 40S Ribosomal protein S10 / 60S ribosomal protein L18a/ L20, eukaryotes / Elongation factor Tu domain 2 / Ribosomal protein L10e / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S27a / : / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein L23/L25, N-terminal / Ribosomal protein L23, N-terminal domain Similarity search - Domain/homology
Small ribosomal subunit protein eS32 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein eL38 / 60S ribosomal protein L36 / Small ribosomal subunit protein eS21 / Large ribosomal subunit protein eL20 / Ribosomal protein L19 / 40S ribosomal protein S26 / Small ribosomal subunit protein RACK1 / 40S ribosomal protein S25 ...Small ribosomal subunit protein eS32 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein eL38 / 60S ribosomal protein L36 / Small ribosomal subunit protein eS21 / Large ribosomal subunit protein eL20 / Ribosomal protein L19 / 40S ribosomal protein S26 / Small ribosomal subunit protein RACK1 / 40S ribosomal protein S25 / Small ribosomal subunit protein eS19 / Small ribosomal subunit protein eS28 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein eL28 / Small ribosomal subunit protein uS7 / KOW domain-containing protein / Small ribosomal subunit protein uS15 / Large ribosomal subunit protein eL43 / 40S ribosomal protein S24 / Ribosomal protein L36a / 40S ribosomal protein S27 / Large ribosomal subunit protein uL30 / Small ribosomal subunit protein uS11 / 60S ribosomal protein L27 / Large ribosomal subunit protein uL2 / Ubiquitin-ribosomal protein eS31 fusion protein / Ubiquitin-ribosomal protein eL40 fusion protein / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein uL16 / Small ribosomal subunit protein uS4 / Ribosomal protein L18 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL33 / Small ribosomal subunit protein eS12 / Large ribosomal subunit protein eL29 / Small ribosomal subunit protein uS9 / Large ribosomal subunit protein eL31 / Large ribosomal subunit protein eL21 / Large ribosomal subunit protein uL29 / Small ribosomal subunit protein uS10 / Large ribosomal subunit protein eL6 / Large ribosomal subunit protein uL1 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL10 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein eS7 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein eL14 / Small ribosomal subunit protein uS12 / Large ribosomal subunit protein eL15 / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Large ribosomal subunit protein eL30 / Small ribosomal subunit protein uS8 / Large ribosomal subunit protein eL13 / Large ribosomal subunit protein uL3 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS10 / Small ribosomal subunit protein uS17 / Large ribosomal subunit protein eL39 / Small ribosomal subunit protein eS17 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein eL34 / Small ribosomal subunit protein uS19 / Large ribosomal subunit protein eL32 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS5 / Selenocysteine-specific elongation factor / Large ribosomal subunit protein eL8 / Small ribosomal subunit protein eS6 / Large ribosomal subunit protein eL22 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein eS4 / Selenocysteine insertion sequence-binding protein 2 / Large ribosomal subunit protein eL37 Similarity search - Component
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM097042, GM077073
United States
Citation
Journal: Science / Year: 2022 Title: Structure of the mammalian ribosome as it decodes the selenocysteine UGA codon. Authors: Tarek Hilal / Benjamin Y Killam / Milica Grozdanović / Malgorzata Dobosz-Bartoszek / Justus Loerke / Jörg Bürger / Thorsten Mielke / Paul R Copeland / Miljan Simonović / Christian M T Spahn / Abstract: The elongation of eukaryotic selenoproteins relies on a poorly understood process of interpreting in-frame UGA stop codons as selenocysteine (Sec). We used cryo-electron microscopy to visualize Sec ...The elongation of eukaryotic selenoproteins relies on a poorly understood process of interpreting in-frame UGA stop codons as selenocysteine (Sec). We used cryo-electron microscopy to visualize Sec UGA recoding in mammals. A complex between the noncoding Sec-insertion sequence (SECIS), SECIS-binding protein 2 (SBP2), and 40 ribosomal subunit enables Sec-specific elongation factor eEFSec to deliver Sec. eEFSec and SBP2 do not interact directly but rather deploy their carboxyl-terminal domains to engage with the opposite ends of the SECIS. By using its Lys-rich and carboxyl-terminal segments, the ribosomal protein eS31 simultaneously interacts with Sec-specific transfer RNA (tRNA) and SBP2, which further stabilizes the assembly. eEFSec is indiscriminate toward l-serine and facilitates its misincorporation at Sec UGA codons. Our results support a fundamentally distinct mechanism of Sec UGA recoding in eukaryotes from that in bacteria.
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