[English] 日本語
Yorodumi
- PDB-6ybt: Structure of a human 48S translational initiation complex - eIF3bgi -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 6ybt
TitleStructure of a human 48S translational initiation complex - eIF3bgi
Components
  • Eukaryotic translation initiation factor 3 subunit AEukaryotic initiation factor 3
  • Eukaryotic translation initiation factor 3 subunit BEukaryotic initiation factor 3
  • Eukaryotic translation initiation factor 3 subunit IEukaryotic initiation factor 3
KeywordsTRANSLATION / eIF3 / ribosome / initiation complex
Function / homology
Function and homology information


viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / IRES-dependent viral translational initiation / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / cytoplasmic translational initiation / formation of cytoplasmic translation initiation complex ...viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / eukaryotic translation initiation factor 3 complex, eIF3m / translation reinitiation / IRES-dependent viral translational initiation / multi-eIF complex / eukaryotic translation initiation factor 3 complex / eukaryotic 43S preinitiation complex / cytoplasmic translational initiation / formation of cytoplasmic translation initiation complex / eukaryotic 48S preinitiation complex / Formation of the ternary complex, and subsequently, the 43S complex / regulation of translational initiation / Ribosomal scanning and start codon recognition / Translation initiation complex formation / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / translation initiation factor binding / translational initiation / translation initiation factor activity / cytoplasmic stress granule / postsynaptic density / molecular adaptor activity / mRNA binding / synapse / structural molecule activity / nucleolus / RNA binding / extracellular exosome / nucleoplasm / membrane / cytosol / cytoplasm
Similarity search - Function
Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor 3 subunit B / eIF3B, RNA recognition motif / Translation initiation factor, beta propellor-like domain / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor eIF2A / Anaphase-promoting complex subunit 4, WD40 domain / Anaphase-promoting complex subunit 4 WD40 domain / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain ...Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor 3 subunit B / eIF3B, RNA recognition motif / Translation initiation factor, beta propellor-like domain / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor eIF2A / Anaphase-promoting complex subunit 4, WD40 domain / Anaphase-promoting complex subunit 4 WD40 domain / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / RNA recognition motif / RNA recognition motif / Eukaryotic RNA Recognition Motif (RRM) profile. / RNA recognition motif domain / RNA-binding domain superfamily / WD40 repeat, conserved site / Nucleotide-binding alpha-beta plait domain superfamily / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Eukaryotic translation initiation factor 3 subunit B / Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor 3 subunit A
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6 Å
AuthorsBrito Querido, J. / Sokabe, M. / Kraatz, S. / Gordiyenko, Y. / Skehel, M. / Fraser, C. / Ramakrishnan, V.
Funding support United Kingdom, United States, 3items
OrganizationGrant numberCountry
Wellcome TrustWTY096570 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_U105184332 United Kingdom
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM092927 United States
CitationJournal: Science / Year: 2020
Title: Structure of a human 48 translational initiation complex.
Authors: Jailson Brito Querido / Masaaki Sokabe / Sebastian Kraatz / Yuliya Gordiyenko / J Mark Skehel / Christopher S Fraser / V Ramakrishnan /
Abstract: A key step in translational initiation is the recruitment of the 43 preinitiation complex by the cap-binding complex [eukaryotic initiation factor 4F (eIF4F)] at the 5' end of messenger RNA (mRNA) to ...A key step in translational initiation is the recruitment of the 43 preinitiation complex by the cap-binding complex [eukaryotic initiation factor 4F (eIF4F)] at the 5' end of messenger RNA (mRNA) to form the 48 initiation complex (i.e., the 48). The 48 then scans along the mRNA to locate a start codon. To understand the mechanisms involved, we used cryo-electron microscopy to determine the structure of a reconstituted human 48 The structure reveals insights into early events of translation initiation complex assembly, as well as how eIF4F interacts with subunits of eIF3 near the mRNA exit channel in the 43 The location of eIF4F is consistent with a slotting model of mRNA recruitment and suggests that downstream mRNA is unwound at least in part by being "pulled" through the 40 subunit during scanning.
History
DepositionMar 17, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 16, 2020Provider: repository / Type: Initial release

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Simplified surface model + fitted atomic model
  • EMDB-10773
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-10773
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
u: Eukaryotic translation initiation factor 3 subunit A
2: Eukaryotic translation initiation factor 3 subunit I
1: Eukaryotic translation initiation factor 3 subunit B


Theoretical massNumber of molelcules
Total (without water)292,3173
Polymers292,3173
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

#1: Protein Eukaryotic translation initiation factor 3 subunit A / Eukaryotic initiation factor 3 / eIF3a / Eukaryotic translation initiation factor 3 subunit 10 / eIF-3-theta / eIF3 p167 / eIF3 p180 ...eIF3a / Eukaryotic translation initiation factor 3 subunit 10 / eIF-3-theta / eIF3 p167 / eIF3 p180 / eIF3 p185


Mass: 163179.531 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q14152
#2: Protein Eukaryotic translation initiation factor 3 subunit I / Eukaryotic initiation factor 3 / eIF3i / Eukaryotic translation initiation factor 3 subunit 2 / TGF-beta receptor-interacting ...eIF3i / Eukaryotic translation initiation factor 3 subunit 2 / TGF-beta receptor-interacting protein 1 / TRIP-1 / eIF-3-beta / eIF3 p36


Mass: 36543.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13347
#3: Protein Eukaryotic translation initiation factor 3 subunit B / Eukaryotic initiation factor 3 / eIF3b / Eukaryotic translation initiation factor 3 subunit 9 / Prt1 homolog / hPrt1 / eIF-3-eta / ...eIF3b / Eukaryotic translation initiation factor 3 subunit 9 / Prt1 homolog / hPrt1 / eIF-3-eta / eIF3 p110 / eIF3 p116


Mass: 92593.414 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P55884

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: Eukaryotic translation initiation factor / Type: RIBOSOME / Entity ID: all / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 %

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingAverage exposure time: 1 sec. / Electron dose: 107 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k)

-
Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.17.1_3660refinement
PHENIX1.17.1_3660refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 144882 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 616.69 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00775444
ELECTRON MICROSCOPYf_angle_d1.68167543
ELECTRON MICROSCOPYf_chiral_restr0.0741000
ELECTRON MICROSCOPYf_plane_restr0.00881072
ELECTRON MICROSCOPYf_dihedral_angle_d13.90791029

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more