- EMDB-42525: Eukaryotic 80S ribosome with Reh1, eIF5A and A/P site tRNA -
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Basic information
Entry
Database: EMDB / ID: EMD-42525
Title
Eukaryotic 80S ribosome with Reh1, eIF5A and A/P site tRNA
Map data
Sample
Complex: Eukaryotic 80S ribosome with Reh1, eIF5A and A/P site tRNA
RNA: x 7 types
Protein or peptide: x 76 types
Protein or peptide: x 1 types
Ligand: x 1 types
Keywords
ribosome assembly / translation / RIBOSOME
Function / homology
Function and homology information
positive regulation of translational termination / positive regulation of translational elongation / negative regulation of glucose mediated signaling pathway / ribosomal subunit / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / pre-mRNA 5'-splice site binding ...positive regulation of translational termination / positive regulation of translational elongation / negative regulation of glucose mediated signaling pathway / ribosomal subunit / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent 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) / nonfunctional rRNA decay / response to cycloheximide / Major pathway of rRNA processing in the nucleolus and cytosol / mRNA destabilization / negative regulation of translational frameshifting / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / 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 / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / 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 / regulation of amino acid metabolic process / ribosomal large subunit export from nucleus / positive regulation of protein kinase activity / G-protein alpha-subunit binding / 90S preribosome / 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) / translation elongation factor activity / protein-RNA complex assembly / regulation of translational fidelity / ribosomal subunit export from nucleus / maturation of LSU-rRNA / translation regulator activity / rescue of stalled ribosome / cellular response to amino acid starvation / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / ribosome assembly / protein kinase C binding / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / translational initiation / positive regulation of apoptotic signaling pathway / macroautophagy / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / rRNA processing / cytoplasmic stress granule / ribosome biogenesis / 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 / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / 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 / cytosol / cytoplasm Similarity search - Function
Translation elongation factor, IF5A, hypusine site / Eukaryotic initiation factor 5A hypusine signature. / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Translation elongation factor, IF5A C-terminal / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Translation elongation factor IF5A-like / : / : / Ribosomal protein S26e signature. / Ribosomal protein L41 ...Translation elongation factor, IF5A, hypusine site / Eukaryotic initiation factor 5A hypusine signature. / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Translation elongation factor, IF5A C-terminal / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Translation elongation factor IF5A-like / : / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / : / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S2, eukaryotic / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L38e / Ribosomal protein L38e superfamily / S27a-like superfamily / Ribosomal L38e protein family / 40S Ribosomal protein S10 / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L10e, conserved site / Ribosomal protein L44e signature. / Ribosomal protein L10e signature. / Ribosomal protein L10e / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein L19, eukaryotic / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein S10, eukaryotic/archaeal / 60S ribosomal protein L18a/ L20, eukaryotes / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein L19/L19e conserved site / : / : / Ribosomal protein L19e signature. / Ribosomal protein S7e signature. / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L44e / Ribosomal protein S17e, conserved site / Ribosomal protein L44 / Ribosomal protein S17e signature. / : / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein L6e signature. / Ribosomal protein S27a / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein L30e signature 1. / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / Ribosomal protein 50S-L18Ae/60S-L20/60S-L18A / Ribosomal L40e family / Ribosomal proteins 50S-L18Ae/60S-L20/60S-L18A / Ribosomal protein L23/L25, N-terminal / Ribosomal protein L23, N-terminal domain / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal_L40e / Ribosomal protein L40e / 40S ribosomal protein S4, C-terminal domain / Ribosomal protein L40e superfamily / 40S ribosomal protein S4 C-terminus / Ribosomal protein S4e, N-terminal, conserved site / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein S4e signature. / Ribosomal protein 60S L18 and 50S L18e / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. Similarity search - Domain/homology
40S ribosomal protein S8 / : / Small ribosomal subunit protein eS1 / RPS31 isoform 1 / RPL10 isoform 1 / RPS20 isoform 1 / RPS2 isoform 1 / RPL24A isoform 1 / 40S ribosomal protein S25 / RPL5 isoform 1 ...40S ribosomal protein S8 / : / Small ribosomal subunit protein eS1 / RPS31 isoform 1 / RPL10 isoform 1 / RPS20 isoform 1 / RPS2 isoform 1 / RPL24A isoform 1 / 40S ribosomal protein S25 / RPL5 isoform 1 / 40S ribosomal protein S3 / Large ribosomal subunit protein uL3 / RPS15 isoform 1 / 60S ribosomal protein L8 / Eukaryotic translation initiation factor 5A / Small ribosomal subunit protein uS4A / Large ribosomal subunit protein uL15 / Small ribosomal subunit protein eS17A / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein uL30A / Large ribosomal subunit protein uL6A / Large ribosomal subunit protein eL6B / Large ribosomal subunit protein uL22A / Large ribosomal subunit protein uL24A / Large ribosomal subunit protein eL33A / Large ribosomal subunit protein eL36A / Large ribosomal subunit protein eL29 / Large ribosomal subunit protein eL15A / Large ribosomal subunit protein eL22A / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS11A / Small ribosomal subunit protein eS19A / Small ribosomal subunit protein eS21A / Small ribosomal subunit protein uS8A / Large ribosomal subunit protein uL5A / Large ribosomal subunit protein eL27A / Large ribosomal subunit protein eL31A / Ubiquitin-ribosomal protein eL40A fusion protein / Large ribosomal subunit protein eL20A / Large ribosomal subunit protein eL43A / Large ribosomal subunit protein eL42A / Small ribosomal subunit protein uS12A / Small ribosomal subunit protein eS24A / Small ribosomal subunit protein eS30A / Small ribosomal subunit protein eS4A / Small ribosomal subunit protein eS6A / Large ribosomal subunit protein uL14A / Large ribosomal subunit protein uL2A / Small ribosomal subunit protein uS17A / Large ribosomal subunit protein eL18A / Small ribosomal subunit protein uS9A / Small ribosomal subunit protein uS13A / Large ribosomal subunit protein eL19A / Large ribosomal subunit protein uL29A / Small ribosomal subunit protein eS32A / Large ribosomal subunit protein uL4A / Large ribosomal subunit protein eL30 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL13A / Small ribosomal subunit protein eS7A / Small ribosomal subunit protein uS2A / Small ribosomal subunit protein eS27A / Large ribosomal subunit protein eL14A / Small ribosomal subunit protein RACK1 / Large ribosomal subunit protein eL32 / Small ribosomal subunit protein eS26A / Small ribosomal subunit protein uS14A / Small ribosomal subunit protein eS12 / Large ribosomal subunit protein eL37A / Large ribosomal subunit protein eL38 / Large ribosomal subunit protein eL34A / Large ribosomal subunit protein eL21A / Small ribosomal subunit protein eS10A / Large ribosomal subunit protein eL13A / Small ribosomal subunit protein eS28A Similarity search - Component
Biological species
Saccharomyces cerevisiae (brewer's yeast)
Method
single particle reconstruction / cryo EM / Resolution: 3.22 Å
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM127127
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM138348
United States
Citation
Journal: Nat Commun / Year: 2025 Title: The assembly factor Reh1 is released from the ribosome during its initial round of translation. Authors: Sharmishtha Musalgaonkar / James N Yelland / Ruta Chitale / Shilpa Rao / Hakan Ozadam / David W Taylor / Can Cenik / Arlen W Johnson / Abstract: Assembly of functional ribosomal subunits and successfully delivering them to the translating pool is a prerequisite for protein synthesis and cell growth. In S. cerevisiae, the ribosome assembly ...Assembly of functional ribosomal subunits and successfully delivering them to the translating pool is a prerequisite for protein synthesis and cell growth. In S. cerevisiae, the ribosome assembly factor Reh1 binds to pre-60S subunits at a late stage during their cytoplasmic maturation. Previous work shows that the C-terminus of Reh1 inserts into the polypeptide exit tunnel of the pre-60S subunit. Here, we show that Reh1-bound nascent 60S subunits associate with 40S subunits to form actively translating ribosomes. Using selective ribosome profiling, we found that Reh1-bound ribosomes populate open reading frames near start codons. Reh1-bound ribosomes are also strongly enriched for initiator tRNA, indicating they are associated with early elongation. Using cryo-electron microscopy to image Reh1-bound 80S ribosomes, we found they contain A site peptidyl tRNA, P site tRNA and eIF5A, indicating that Reh1 does not dissociate from 60S until translation elongation. We propose that Reh1 is displaced by the elongating peptide chain, making it the last assembly factor released from the nascent 60S subunit during its initial round of translation.
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