[English] 日本語

- PDB-8zdb: Cryo-EM structure of the human ubiquitylated 40S ribosome with RIOK3 -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 8zdb | |||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of the human ubiquitylated 40S ribosome with RIOK3 | |||||||||||||||||||||||||||||||||||||||
![]() |
| |||||||||||||||||||||||||||||||||||||||
![]() | RIBOSOME / ubiquitylation / RIOK3 | |||||||||||||||||||||||||||||||||||||||
Function / homology | ![]() cellular response to dsDNA / negative regulation of MDA-5 signaling pathway / caspase binding / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / negative regulation of peptidyl-serine phosphorylation / 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 / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to dsRNA / positive regulation of gastrulation / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / protein tyrosine kinase inhibitor activity / positive regulation of innate immune response / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / nucleolus organization / positive regulation of Golgi to plasma membrane protein transport / translation at postsynapse / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / mammalian oogenesis stage / supercoiled DNA binding / activation-induced cell death of T cells / neural crest cell differentiation / NF-kappaB complex / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / translation at presynapse / positive regulation of ubiquitin-protein transferase activity / Formation of the ternary complex, and subsequently, the 43S complex / negative regulation of phagocytosis / erythrocyte homeostasis / rRNA modification in the nucleus and cytosol / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / protein kinase A binding / preribosome, small subunit precursor / negative regulation of ubiquitin protein ligase activity / pigmentation / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / positive regulation of activated T cell proliferation / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / negative regulation of translational frameshifting / Protein hydroxylation / BH3 domain binding / TOR signaling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / mTORC1-mediated signalling / T cell proliferation involved in immune response / Peptide chain elongation / iron-sulfur cluster binding / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / 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) / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / phagocytic cup / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / negative regulation of protein-containing complex assembly / erythrocyte development / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / 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) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Protein methylation / spindle assembly / Nuclear events stimulated by ALK signaling in cancer / ribosomal small subunit export from nucleus / positive regulation of intrinsic apoptotic signaling pathway / rough endoplasmic reticulum / laminin binding / translation regulator activity / negative regulation of canonical NF-kappaB signal transduction / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / positive regulation of cell cycle / translation initiation factor binding / signaling adaptor activity / gastrulation Similarity search - Function | |||||||||||||||||||||||||||||||||||||||
Biological species | ![]() | |||||||||||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||||||||||||||||||||||||||||||||
![]() | Huang, Z. / Wang, M. / Li, Y. / Beckmann, R. / Cheng, J. | |||||||||||||||||||||||||||||||||||||||
Funding support | 1items
| |||||||||||||||||||||||||||||||||||||||
![]() | ![]() 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 |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 1.7 MB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 1.3 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
---|
-Related structure data
Related structure data | ![]() 39956MC ![]() 8zdcC ![]() 8zddC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
+Small ribosomal subunit protein ... , 33 types, 33 molecules ABCEGHIJLNOVWXYabdehDFKMPQRSTU...
-Protein , 2 types, 4 molecules fijp
#34: Protein | Mass: 18004.041 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) ![]() #36: 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 |
---|
-RNA chain / Non-polymers , 2 types, 3 molecules 2

#1: RNA chain | Mass: 602776.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
---|---|
#37: Chemical |
-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: ubiquitylated 40S ribosome with RIOK3 / Type: RIBOSOME / Entity ID: #1-#36 / Source: NATURAL |
---|---|
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 |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
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: 44 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-
Processing
EM software | Name: RELION / Category: CTF correction |
---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 20179 / Symmetry type: POINT |