[English] 日本語
Yorodumi- PDB-9ru9: RPS26dC HEK mutant 80S ribosome bound to Kozak mRNA (RPS26dC-Kozak) -
+
Open data
-
Basic information
| Entry | Database: PDB / ID: 9ru9 | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Title | RPS26dC HEK mutant 80S ribosome bound to Kozak mRNA (RPS26dC-Kozak) | ||||||||||||||||||
Components |
| ||||||||||||||||||
Keywords | RIBOSOME / Kozak mRNA / Human / RPS26dC / eS26 | ||||||||||||||||||
| Function / homology | Function and homology informationembryonic brain development / translation at presynapse / exit from mitosis / optic nerve development / response to insecticide / regulation of translation involved in cellular response to UV / eukaryotic 80S initiation complex / negative regulation of endoplasmic reticulum unfolded protein response / ribosomal protein import into nucleus / negative regulation of formation of translation preinitiation complex ...embryonic brain development / translation at presynapse / exit from mitosis / optic nerve development / response to insecticide / regulation of translation involved in cellular response to UV / eukaryotic 80S initiation complex / negative regulation of endoplasmic reticulum unfolded protein response / ribosomal protein import into nucleus / negative regulation of formation of translation preinitiation complex / axial mesoderm development / regulation of G1 to G0 transition / retinal ganglion cell axon guidance / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of ubiquitin-protein transferase activity / positive regulation of respiratory burst involved in inflammatory response / protein-DNA complex disassembly / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / positive regulation of DNA-templated transcription initiation / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / 90S preribosome assembly / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / alpha-beta T cell differentiation / positive regulation of DNA damage response, signal transduction by p53 class mediator / GAIT complex / negative regulation of RNA splicing / TORC2 complex binding / neural crest cell differentiation / supercoiled DNA binding / cytoplasmic translational initiation / NF-kappaB complex / negative regulation of DNA repair / G1 to G0 transition / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / middle ear morphogenesis / rRNA modification in the nucleus and cytosol / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / negative regulation of phagocytosis / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / Formation of the ternary complex, and subsequently, the 43S complex / ion channel inhibitor activity / protein kinase A binding / laminin receptor activity / Ribosomal scanning and start codon recognition / pigmentation / homeostatic process / positive regulation of mitochondrial depolarization / Translation initiation complex formation / macrophage chemotaxis / lung morphogenesis / negative regulation of Wnt signaling pathway / positive regulation of natural killer cell proliferation / fibroblast growth factor binding / Protein hydroxylation / monocyte chemotaxis / BH3 domain binding / negative regulation of translational frameshifting / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / SARS-CoV-1 modulates host translation machinery / positive regulation of GTPase activity / TOR signaling / mTORC1-mediated signalling / iron-sulfur cluster binding / Peptide chain elongation / regulation of cell division / cellular response to ethanol / Selenocysteine synthesis / Formation of a pool of free 40S subunits / negative regulation of protein binding / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Eukaryotic Translation Termination / protein serine/threonine kinase inhibitor activity / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / ubiquitin ligase inhibitor activity / negative regulation of respiratory burst involved in inflammatory response / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / negative regulation of ubiquitin-dependent protein catabolic process / protein localization to nucleus / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / protein targeting / positive regulation of microtubule polymerization Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.97 Å | ||||||||||||||||||
Authors | Hiregange, D.G. / Fraticelli, D. / Bashan, A. / Yonath, A. / Dikstein, R. | ||||||||||||||||||
| Funding support | Israel, 1items
| ||||||||||||||||||
Citation | Journal: Nat Commun / Year: 2026Title: Structural and molecular basis of specialized translation mediated by the ribosome mRNA-binding channel. Authors: Davide Fraticelli / Disha Gajanan Hiregange / Benjamin Weiss / Ariel Ogran / Tal Havkin-Solomon / Irene Martinez Roman / Anat Bashan / Ada Yonath / Rivka Dikstein / ![]() Abstract: The ribosome mRNA channel is central to translation, yet its role in regulatory mechanisms remains unclear. Using cryo-EM of human ribosomal complexes bound to Kozak and TISU mRNAs from wild-type (WT) ...The ribosome mRNA channel is central to translation, yet its role in regulatory mechanisms remains unclear. Using cryo-EM of human ribosomal complexes bound to Kozak and TISU mRNAs from wild-type (WT) and RPS26/eS26 mutant (RPS26dC) cells, we demonstrate that both RPS26/eS26 and mRNA adopt distinct conformations, explaining the opposing effects of RPS26dC on their activity. Translatome studies of WT and RPS26dC reveal AUG-context-dependent changes in 48S and 80S initiation complexes and slower scanning. Downregulated mRNAs are enriched for specific AUG-upstream nucleotides and a -1-cytosine contacting 18S rRNA G1207, an interaction lost in RPS26dC. Strongly affected transcripts include replication-dependent histones, which, despite short 5'UTRs and suboptimal Kozak, exhibit robust translation activity that is RPS26/eS26-dependent. We identify a translational enhancer in the H2B 5'UTR (-16 to -9) overlapping predicted RPS26/eS26-binding sites, with a distinct ribosome-bound conformation. Exploiting these features, we engineered a high-efficiency translational cassette with minimal leaky scanning. These findings underscore the role of the ribosome's mRNA channel in selective translation and its therapeutic potential. | ||||||||||||||||||
| History |
|
-
Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
|---|
-
Downloads & links
-
Download
| PDBx/mmCIF format | 9ru9.cif.gz | 6.1 MB | Display | PDBx/mmCIF format |
|---|---|---|---|---|
| PDB format | pdb9ru9.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9ru9.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ru/9ru9 ftp://data.pdbj.org/pub/pdb/validation_reports/ru/9ru9 | HTTPS FTP |
|---|
-Related structure data
| Related structure data | ![]() 54267MC ![]() 9ru7C ![]() 9ru8C ![]() 9ruaC ![]() 9rucC ![]() 55218 ![]() 55219 ![]() 55220 M: map data used to model this data C: citing same article ( |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
-
Assembly
| Deposited unit | ![]()
|
|---|---|
| 1 |
|
-
Components
-Large ribosomal subunit protein ... , 9 types, 9 molecules LALBLELaLrLbLFLjLo
| #1: Protein | Mass: 28103.855 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62917 |
|---|---|
| #3: Protein | Mass: 46224.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P39023 |
| #40: Protein | Mass: 32810.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q02878 |
| #46: Protein | Mass: 16619.527 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46776 |
| #59: Protein | Mass: 15697.546 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46779 |
| #61: Protein | Mass: 17817.295 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P47914 |
| #62: Protein | Mass: 29290.973 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P18124 |
| #69: Protein | Mass: 11111.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61927 |
| #74: Protein | Mass: 12489.991 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P83881 |
-Small ribosomal subunit protein ... , 4 types, 4 molecules SASESMSV
| #2: Protein | Mass: 32796.859 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08865 |
|---|---|
| #9: Protein | Mass: 29654.869 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62701 |
| #20: Protein | Mass: 14376.780 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25398 |
| #28: Protein | Mass: 8993.193 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63220 |
+40S ribosomal protein ... , 26 types, 26 molecules SBSDSJSCSFSHSWSISQSUSKSOSXSSSdSNSLSRSPSTSYSZSaSbScSG
-RNA chain , 7 types, 7 molecules L8L7PtmRS2L5Et
| #5: RNA chain | Mass: 50157.676 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
|---|---|
| #6: RNA chain | Mass: 38691.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 23898 |
| #76: RNA chain | Mass: 24848.943 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #77: RNA chain | Mass: 8831.344 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #78: RNA chain | Mass: 603552.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #79: RNA chain | Mass: 1640856.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #80: RNA chain | Mass: 24231.510 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 174924 |
-Protein , 4 types, 4 molecules SeSfSgLm
| #34: Protein | Mass: 14415.724 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62861 |
|---|---|
| #35: Protein | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979 |
| #36: Protein | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
| #72: Protein | Mass: 14800.474 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62987 |
+60S ribosomal protein ... , 32 types, 32 molecules LCLJLHLGLOLLLVLMLNLILDLQLRLSLTLPLULXLYLZLhLcLdLeLfLgLiLkLlLnLpLW
-Non-polymers , 10 types, 913 molecules 


















| #83: Chemical | ChemComp-K / #84: Chemical | #85: Chemical | ChemComp-MG / #86: Chemical | ChemComp-ZN / #87: Chemical | ChemComp-AME / | #88: Chemical | ChemComp-MET / | #89: Chemical | ChemComp-HYG / | #90: Chemical | ChemComp-ANM / | #91: Chemical | ChemComp-NA / #92: Water | ChemComp-HOH / | |
|---|
-Details
| Has ligand of interest | N |
|---|---|
| Has protein modification | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
|---|---|
| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
| Component | Name: RPS26dC HEK mutant 80S ribosome bound to Kozak mRNA (RPS26dC-Kozak) Type: RIBOSOME / Entity ID: #1-#82 / Source: NATURAL |
|---|---|
| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.5 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid type: Quantifoil R2/2 |
| Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
|---|---|
| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 1000 nm |
| Image recording | Electron dose: 1 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
-
Processing
| EM software |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.97 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 59189 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 52.91 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
|
Movie
Controller
About Yorodumi



Homo sapiens (human)
Israel, 1items
Citation









PDBj





















































FIELD EMISSION GUN