- EMDB-14752: Rabbit 80S ribosome programmed with SECIS and SBP2 -
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Basic information
Entry
Database: EMDB / ID: EMD-14752
Title
Rabbit 80S ribosome programmed with SECIS and SBP2
Map data
Sample
Complex: 80S-SBP2-SECIS
Complex: Selenocysteine insertion sequence-binding protein 2
Protein or peptide: x 1 types
Complex: 80S Ribosome
RNA: x 4 types
Protein or peptide: x 76 types
Complex: CrPV IRES
RNA: x 1 types
Complex: GPX4 SECIS element
RNA: x 1 types
Ligand: x 1 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 / 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 ...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 / 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) / ribosomal subunit / selenocysteine incorporation / selenocysteine insertion sequence binding / striatum development / negative regulation of RNA splicing / Formation of the ternary complex, and subsequently, the 43S complex / rRNA modification in the nucleus and cytosol / laminin receptor activity / exit from mitosis / Ribosomal scanning and start codon recognition / optic nerve development / Translation initiation complex formation / mammalian oogenesis stage / retinal ganglion cell axon guidance / activation-induced cell death of T cells / Protein hydroxylation / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / organelle membrane / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / L13a-mediated translational silencing of Ceruloplasmin expression / TOR signaling / T cell proliferation involved in immune response / Major pathway of rRNA processing in the nucleolus and cytosol / protein-RNA complex assembly / ribosomal small subunit export from nucleus / erythrocyte development / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / translation regulator activity / Nuclear events stimulated by ALK signaling in cancer / ribonucleoprotein complex binding / cytosolic ribosome / laminin binding / rough endoplasmic reticulum / 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) / gastrulation / MDM2/MDM4 family protein binding / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / rescue of stalled ribosome / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / ribosomal large subunit biogenesis / cellular response to leukemia inhibitory factor / maturation of SSU-rRNA / mRNA 3'-UTR binding / small-subunit processome / positive regulation of apoptotic signaling pathway / protein kinase C binding / positive regulation of protein-containing complex assembly / placenta development / Regulation of expression of SLITs and ROBOs / modification-dependent protein catabolic process / cytoplasmic ribonucleoprotein granule / spindle / G1/S transition of mitotic cell cycle / rRNA processing / protein tag activity / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of canonical Wnt signaling pathway / ribosome binding / glucose homeostasis / retina development in camera-type eye / virus receptor activity / regulation of translation / heparin binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cell body / T cell differentiation in thymus / 5S rRNA binding / large ribosomal subunit rRNA binding / SARS-CoV-2 modulates host translation machinery Similarity search - Function
Selenocysteine insertion sequence-binding protein 2 / : / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / Ribosomal protein L6, N-terminal / Ribosomal protein L6, N-terminal domain / Ribosomal protein L30e / Ribosomal protein L2, archaeal-type ...Selenocysteine insertion sequence-binding protein 2 / : / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / Ribosomal protein L6, N-terminal / Ribosomal protein L6, N-terminal domain / Ribosomal protein L30e / Ribosomal protein L2, archaeal-type / Ribosomal protein L28e / Ribosomal L15/L27a, N-terminal / Ribosomal protein L23 / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / : / 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. / metallochaperone-like domain / Ribosomal protein S12e / TRASH domain / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein L29e / Ribosomal L29e protein family / S27a-like superfamily / 40S Ribosomal protein S10 / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein L1, conserved site / Ribosomal protein L1 signature. / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / Ribosomal protein L1 / 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 S8e subdomain, eukaryotes / Ribosomal protein S30 / Ribosomal protein S30 / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein S7e signature. / Ribosomal protein L44e signature. / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein L10e / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein L19, eukaryotic / Ribosomal protein S19e / Ribosomal protein S3Ae, conserved site / Ribosomal protein S19e / Ribosomal protein S3Ae signature. / Ribosomal_S19e / Ribosomal protein S27e signature. / 60S ribosomal protein L18a/ L20, eukaryotes / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / : / Ribosomal protein S19A/S15e / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L44e / Ribosomal protein L19/L19e conserved site / Ribosomal protein L44 / Ribosomal protein L19e signature. / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. 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 / Large ribosomal subunit protein uL24 / Small ribosomal subunit protein uS15 / 60S ribosomal protein L37a / 40S ribosomal protein S24 / Large ribosomal subunit protein eL42 / 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 / 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 / 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.
Name: ZINC ION / type: ligand / ID: 84 / Number of copies: 8 / Formula: ZN
Molecular weight
Theoretical: 65.409 Da
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Experimental details
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Structure determination
Method
cryo EM
Processing
single particle reconstruction
Aggregation state
particle
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Sample preparation
Buffer
pH: 7.6
Vitrification
Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK II
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Electron microscopy
Microscope
FEI POLARA 300
Image recording
Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Number grids imaged: 1 / Number real images: 6908 / Average electron dose: 25.0 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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