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- PDB-8zdd: Cryo-EM structure of the human ubiquitylated pre-40S ribosome wit... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8zdd | ||||||||||||||||||||||||||||||||||||||||||
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Title | Cryo-EM structure of the human ubiquitylated pre-40S ribosome with RIOK3 (without NOB1) | ||||||||||||||||||||||||||||||||||||||||||
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![]() | RIBOSOME / ubiquitylation / RIOK3 | ||||||||||||||||||||||||||||||||||||||||||
Function / homology | ![]() cellular response to dsDNA / negative regulation of MDA-5 signaling pathway / caspase binding / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage ...cellular response to dsDNA / negative regulation of MDA-5 signaling pathway / caspase binding / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / cellular response to dsRNA / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / nucleolus organization / positive regulation of Golgi to plasma membrane protein transport / positive regulation of innate immune response / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / supercoiled DNA binding / neural crest cell differentiation / NF-kappaB complex / positive regulation of ubiquitin-protein transferase activity / cysteine-type endopeptidase activator activity involved in apoptotic process / oxidized purine DNA binding / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / U3 snoRNA binding / ubiquitin-like protein conjugating enzyme binding / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / negative regulation of phagocytosis / rRNA modification in the nucleus and cytosol / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / preribosome, small subunit precursor / negative regulation of ubiquitin protein ligase activity / protein kinase A binding / ion channel inhibitor activity / pigmentation / Ribosomal scanning and start codon recognition / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / positive regulation of activated T cell proliferation / negative regulation of translational frameshifting / Protein hydroxylation / TOR signaling / BH3 domain binding / regulation of cell division / SARS-CoV-1 modulates host translation machinery / mTORC1-mediated signalling / cellular response to ethanol / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / iron-sulfur cluster binding / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of ubiquitin-dependent protein catabolic process / positive regulation of signal transduction by p53 class mediator / SRP-dependent cotranslational protein targeting to membrane / protein serine/threonine kinase inhibitor activity / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / Maturation of protein E / Maturation of protein E / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / L13a-mediated translational silencing of Ceruloplasmin expression / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / negative regulation of protein-containing complex assembly / Major pathway of rRNA processing in the nucleolus and cytosol Similarity search - Function | ||||||||||||||||||||||||||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||||||||||||||||||||||||||||||||||||||
![]() | Huang, Z. / Wang, M. / Li, Y. / Beckmann, R. / Cheng, J. | ||||||||||||||||||||||||||||||||||||||||||
Funding support | 1items
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![]() | ![]() Title: RIOK3 mediates the degradation of 40S ribosomes. Authors: Zixuan Huang / Frances F Diehl / Mengjiao Wang / Yi Li / Aixia Song / Fei Xavier Chen / Nicolle A Rosa-Mercado / Roland Beckmann / Rachel Green / Jingdong Cheng / ![]() ![]() ![]() Abstract: Cells tightly regulate ribosome homeostasis to adapt to changing environments. Ribosomes are degraded during stress, but the mechanisms responsible remain unclear. Here, we show that starvation ...Cells tightly regulate ribosome homeostasis to adapt to changing environments. Ribosomes are degraded during stress, but the mechanisms responsible remain unclear. Here, we show that starvation induces the selective depletion of 40S ribosomes following their ubiquitylation by the E3 ligase RNF10. The atypical kinase RIOK3 specifically recognizes these ubiquitylated 40S ribosomes through a unique ubiquitin-interacting motif, visualized by cryoelectron microscopy (cryo-EM). RIOK3 binding and ubiquitin recognition are essential for 40S ribosome degradation during starvation. RIOK3 induces the degradation of ubiquitylated 40S ribosomes through progressive decay of their 18S rRNA beginning at the 3' end, as revealed by cryo-EM structures of degradation intermediates. Together, these data define a pathway and mechanism for stress-induced degradation of 40S ribosomes, directly connecting ubiquitylation to regulation of ribosome homeostasis. | ||||||||||||||||||||||||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 1.8 MB | Display | ![]() |
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PDB format | ![]() | 1.4 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 558.5 KB | Display | ![]() |
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Full document | ![]() | 602.4 KB | Display | |
Data in XML | ![]() | 116 KB | Display | |
Data in CIF | ![]() | 200.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 39958MC ![]() 8zdbC ![]() 8zdcC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
+Small ribosomal subunit protein ... , 30 types, 30 molecules RABCEGHIJLNOVWXYbdDFKMPQSTUZcg
-Protein , 5 types, 6 molecules xutpij
#19: Protein | Mass: 27970.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#20: Protein | Mass: 91951.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#21: Protein | Mass: 54935.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#35: Protein | Mass: 59178.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: O14730, non-specific serine/threonine protein kinase |
#36: Protein | Mass: 8576.831 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain / Non-polymers , 2 types, 2 molecules 2

#1: RNA chain | Mass: 604100.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#37: Chemical | ChemComp-ZN / |
-Details
Has ligand of interest | N |
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Has protein modification | N |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: ubiquitylated pre-40S ribosome with RIOK3 / Type: RIBOSOME / Entity ID: #1-#36 / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 58 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
EM software | Name: RELION / Category: CTF correction |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 34363 / Symmetry type: POINT |