- EMDB-21530: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-I... -
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Basic information
Entry
Database: EMDB / ID: EMD-21530
Title
Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)
Map data
Sharpened map after post processing for Class 2 (closed)
Sample
Complex: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)
RNA: x 2 types
Protein or peptide: x 42 types
Ligand: x 2 types
Keywords
CrPV 5'-UTR IRES / Internal ribosome entry site / RIBOSOME
Function / homology
Function and homology information
viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / IRES-dependent viral translational initiation / multi-eIF complex / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex ...viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / IRES-dependent viral translational initiation / multi-eIF complex / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / mRNA cap binding / eukaryotic 48S preinitiation complex / metal-dependent deubiquitinase activity / regulation of translational initiation / laminin receptor activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / mammalian oogenesis stage / activation-induced cell death of T cells / positive regulation of signal transduction by p53 class mediator / phagocytic cup / ubiquitin ligase inhibitor activity / TOR signaling / T cell proliferation involved in immune response / erythrocyte development / translation regulator activity / ribosomal small subunit export from nucleus / cytosolic ribosome / laminin binding / rough endoplasmic reticulum / gastrulation / MDM2/MDM4 family protein binding / translation initiation factor binding / translation initiation factor activity / 90S preribosome / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / rescue of stalled ribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of apoptotic signaling pathway / cellular response to leukemia inhibitory factor / maturation of SSU-rRNA / small-subunit processome / positive regulation of translation / protein kinase C binding / positive regulation of protein-containing complex assembly / placenta development / PML body / fibrillar center / modification-dependent protein catabolic process / spindle / cytoplasmic ribonucleoprotein granule / G1/S transition of mitotic cell cycle / rRNA processing / protein tag activity / metallopeptidase activity / positive regulation of canonical Wnt signaling pathway / rhythmic process / ribosome binding / glucose homeostasis / regulation of translation / virus receptor activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cell body / T cell differentiation in thymus / perikaryon / cytosolic small ribosomal subunit / cysteine-type deubiquitinase activity / cytoplasmic translation / mitochondrial inner membrane / postsynaptic density / cell differentiation / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / ribonucleoprotein complex / translation / positive regulation of protein phosphorylation / positive regulation of apoptotic process / cell division / DNA repair / mRNA binding / centrosome / ubiquitin protein ligase binding / synapse / dendrite / positive regulation of cell population proliferation / apoptotic process / nucleolus / negative regulation of apoptotic process / protein kinase binding / perinuclear region of cytoplasm / Golgi apparatus / endoplasmic reticulum / DNA binding / RNA binding / zinc ion binding Similarity search - Function
Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor 3 subunit F / Translation initiation factor 3 complex subunit L / RNA polymerase I-associated factor PAF67 / Eukaryotic translation initiation factor 3 subunit M / eIF3 subunit M, C-terminal helix domain ...Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor 3 subunit F / Translation initiation factor 3 complex subunit L / RNA polymerase I-associated factor PAF67 / Eukaryotic translation initiation factor 3 subunit M / eIF3 subunit M, C-terminal helix domain / eIF3 subunit M, C-terminal helix / Eukaryotic translation initiation factor 3 subunit E, C-terminal / Eukaryotic translation initiation factor 3 subunit E / Eukaryotic translation initiation factor 3 subunit E, N-terminal / eIF3 subunit 6 N terminal domain / eIF3 subunit 6 N terminal domain / Eukaryotic translation initiation factor 3 subunit K / Translation initiation factor 3, subunit 12, N-terminal, eukaryotic / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / Eukaryotic translation initiation factor 3 subunit C, N-terminal domain / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit 8 N-terminus / Eukaryotic translation initiation factor 3 subunit A / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / : / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / : / Ribosomal protein S26e signature. / : / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S2, eukaryotic / S27a-like superfamily / 40S Ribosomal protein S10 / Ribosomal protein S10, eukaryotic/archaeal / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein S25 / S25 ribosomal protein / 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 S7e signature. / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein S19e / Ribosomal protein S3Ae, conserved site / Ribosomal protein S19e / Ribosomal protein S3Ae signature. / Ribosomal_S19e / Ribosomal protein S27e signature. / 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 S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / Ribosomal protein S6, eukaryotic / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / 40S ribosomal protein S1/3, eukaryotes / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / 40S ribosomal protein S11, N-terminal / Ribosomal_S17 N-terminal / Ribosomal protein S7e / Ribosomal protein S7e / Ribosomal protein S4, KOW domain / Ribosomal protein S4e / Ribosomal protein S4e, central region / Ribosomal protein S4e, central domain superfamily Similarity search - Domain/homology
Small ribosomal subunit protein uS4 / Eukaryotic translation initiation factor 3 subunit L / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein RACK1 / Ubiquitin-ribosomal protein eS31 fusion protein / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit M / Eukaryotic translation initiation factor 3 subunit A ...Small ribosomal subunit protein uS4 / Eukaryotic translation initiation factor 3 subunit L / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein RACK1 / Ubiquitin-ribosomal protein eS31 fusion protein / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit M / Eukaryotic translation initiation factor 3 subunit A / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein eS1 / Eukaryotic translation initiation factor 3 subunit H / Eukaryotic translation initiation factor 3 subunit E / Small ribosomal subunit protein eS7 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS12 / 40S ribosomal protein S24 / Eukaryotic translation initiation factor 3 subunit K / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Small ribosomal subunit protein eS25 / Small ribosomal subunit protein eS26 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein eS28 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein eS4 / Small ribosomal subunit protein eS6 / Small ribosomal subunit protein eS19 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein eS10 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS14 / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit D Similarity search - Component
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM097014
United States
Citation
Journal: Elife / Year: 2020 Title: A complex IRES at the 5'-UTR of a viral mRNA assembles a functional 48S complex via an uAUG intermediate. Authors: Ritam Neupane / Vera P Pisareva / Carlos F Rodriguez / Andrey V Pisarev / Israel S Fernández / Abstract: Taking control of the cellular apparatus for protein production is a requirement for virus progression. To ensure this control, diverse strategies of cellular mimicry and/or ribosome hijacking have ...Taking control of the cellular apparatus for protein production is a requirement for virus progression. To ensure this control, diverse strategies of cellular mimicry and/or ribosome hijacking have evolved. The initiation stage of translation is especially targeted as it involves multiple steps and the engagement of numerous initiation factors. The use of structured RNA sequences, called nternal ibosomal ntry ites (IRES), in viral RNAs is a widespread strategy for the exploitation of eukaryotic initiation. Using a combination of electron cryo-microscopy (cryo-EM) and reconstituted translation initiation assays with native components, we characterized how a novel IRES at the 5'-UTR of a viral RNA assembles a functional initiation complex via an uAUG intermediate. The IRES features a novel extended, multi-domain architecture, that circles the 40S head. The structures and accompanying functional data illustrate the importance of 5'-UTR regions in translation regulation and underline the relevance of the untapped diversity of viral IRESs.
History
Deposition
Mar 8, 2020
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Header (metadata) release
Apr 22, 2020
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Map release
Apr 22, 2020
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Update
Mar 20, 2024
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Current status
Mar 20, 2024
Processing site: RCSB / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
Entire : Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-I...
Entire
Name: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)
Components
Complex: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)
RNA: 18S rRNA
Protein or peptide: uS2
Protein or peptide: eS1
Protein or peptide: uS5
Protein or peptide: eS4
Protein or peptide: eS6
Protein or peptide: eS7
Protein or peptide: eS8
Protein or peptide: uS4
Protein or peptide: uS17
Protein or peptide: uS15
Protein or peptide: uS11
Protein or peptide: eS21
Protein or peptide: uS8
Protein or peptide: uS12
Protein or peptide: eS24
Protein or peptide: eS26
Protein or peptide: eS27
Protein or peptide: eS30
Protein or peptide: uS3
Protein or peptide: uS7
Protein or peptide: eS10
Protein or peptide: eS12
Protein or peptide: uS19
Protein or peptide: uS9
Protein or peptide: eS17
Protein or peptide: uS13
Protein or peptide: eS19
Protein or peptide: uS10
Protein or peptide: eS25
Protein or peptide: eS28
Protein or peptide: eS29
Protein or peptide: eS31
Protein or peptide: RACK1
Protein or peptide: Eukaryotic translation initiation factor 3 subunit E
Protein or peptide: Eukaryotic translation initiation factor 3 subunit F
Protein or peptide: Eukaryotic translation initiation factor 3 subunit K
Protein or peptide: Eukaryotic translation initiation factor 3 subunit L
Protein or peptide: Eukaryotic translation initiation factor 3 subunit M
Protein or peptide: Eukaryotic translation initiation factor 3 subunit A
Protein or peptide: Eukaryotic translation initiation factor 3 subunit C
Protein or peptide: Eukaryotic translation initiation factor 3 subunit D
Protein or peptide: Eukaryotic translation initiation factor 3 subunit H
RNA: CrPV 5'-UTR IRES
Ligand: MAGNESIUM ION
Ligand: ZINC ION
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Supramolecule #1: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-I...
Supramolecule
Name: Structure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2) type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#44
Source (natural)
Organism: Oryctolagus cuniculus (rabbit)
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Macromolecule #1: 18S rRNA
Macromolecule
Name: 18S rRNA / type: rna / ID: 1 / Number of copies: 1
Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV Details: Grids were blotted for 2.5s and flash cooled in liquid ethane.
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Electron microscopy
Microscope
FEI TITAN KRIOS
Image recording
Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Average exposure time: 8.0 sec. / Average electron dose: 56.9 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron optics
Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
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Image processing
Details
The microscope was equipped with an energy filter with slits aperture of 20eV, installed before the detector.
Particle selection
Number selected: 915647
Startup model
Type of model: EMDB MAP
Final reconstruction
Number classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.36 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 23444
Initial angle assignment
Type: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final angle assignment
Type: MAXIMUM LIKELIHOOD / Software - Name: RELION
FSC plot (resolution estimation)
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