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- PDB-8pj1: Structure of human 48S translation initiation complex in open cod... -

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Basic information

Entry
Database: PDB / ID: 8pj1
TitleStructure of human 48S translation initiation complex in open codon scanning state (48S-1)
Components
  • (40S ribosomal protein ...) x 31
  • (Eukaryotic translation initiation factor ...) x 17
  • 18S rRNA
  • 60S ribosomal protein L41
  • Initiator Met-tRNA-i
  • Receptor of activated protein C kinase 1
  • Ubiquitin
  • mRNA
KeywordsRIBOSOME / TRANSLATION / initiation / 48S / eIF / human / eukaryotic / factor / codon / scanning / open / reading
Function / homology
Function and homology information


male germ cell proliferation / positive regulation of mRNA binding / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress / viral translational termination-reinitiation / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process ...male germ cell proliferation / positive regulation of mRNA binding / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress / viral translational termination-reinitiation / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / methionyl-initiator methionine tRNA binding / negative regulation of translational initiation in response to stress / eukaryotic translation initiation factor 3 complex, eIF3e / PERK-mediated unfolded protein response / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / PERK regulates gene expression / IRES-dependent viral translational initiation / response to kainic acid / translation reinitiation / eukaryotic translation initiation factor 2 complex / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / cytoplasmic translational initiation / multi-eIF complex / regulation of translational initiation in response to stress / translation factor activity, RNA binding / eukaryotic 43S preinitiation complex / formation of translation preinitiation complex / mRNA cap binding / eukaryotic 48S preinitiation complex / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / 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 / positive regulation of endodeoxyribonuclease activity / nucleolus organization / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / metal-dependent deubiquitinase activity / protein-synthesizing GTPase / negative regulation of DNA repair / negative regulation of RNA splicing / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / regulation of translational initiation / supercoiled DNA binding / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of ubiquitin-protein transferase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / ubiquitin-like protein conjugating enzyme binding / rRNA modification in the nucleus and cytosol / negative regulation of phagocytosis / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / negative regulation of ubiquitin protein ligase activity / laminin receptor activity / protein kinase A binding / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / 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 / TOR signaling / negative regulation of translational frameshifting / BH3 domain binding / positive regulation of activated T cell proliferation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / iron-sulfur cluster binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / ribosomal small subunit binding / cellular response to ethanol / regulation of cell division / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / positive regulation of GTPase activity / negative regulation of ubiquitin-dependent protein catabolic process / SRP-dependent cotranslational protein targeting to membrane
Similarity search - Function
EIF3I / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 3 subunit G, N-terminal / eIF3G, RNA recognition motif / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor SUI1 / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H ...EIF3I / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 3 subunit G, N-terminal / eIF3G, RNA recognition motif / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor SUI1 / 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 / Eukaryotic translation initiation factor 3 subunit B / Translation initiation factor 3 complex subunit L / eIF3B, RNA recognition motif / RNA polymerase I-associated factor PAF67 / Eukaryotic translation initiation factor 3 subunit M / eIF3 subunit M, C-terminal helix domain / eIF3 subunit 6 N terminal domain / eIF3 subunit M, C-terminal helix / Eukaryotic translation initiation factor 3 subunit E, C-terminal / Translation initiation factor, beta propellor-like domain / Eukaryotic translation initiation factor 3 subunit E / Eukaryotic translation initiation factor 3 subunit E, N-terminal / Eukaryotic translation initiation factor eIF2A / eIF3 subunit 6 N terminal domain / Eukaryotic translation initiation factor 3 subunit K / Translation initiation factor 3, subunit 12, N-terminal, eukaryotic / SUI1 domain superfamily / Translation initiation factor SUI1 / Translation initiation factor SUI1 family profile. / SUI1 domain / : / eIF3a, PCI domain, TPR-like region / Eukaryotic translation initiation factor 3 subunit A / 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 / Translation initiation factor IF2/IF5 domain / Translation initiation factor IF2/IF5, N-terminal / Translation initiation factor IF2/IF5, zinc-binding / Translation initiation factor IF2/IF5 / Domain found in IF2B/IF5 / domain present in translation initiation factor eIF2B and eIF5 / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / Translation initiation factor 1A (eIF-1A), conserved site / Eukaryotic initiation factor 1A signature. / eukaryotic translation initiation factor 1A / Translation initiation factor 1A (eIF-1A) / Initiation factor eIF2 gamma, C-terminal / Initiation factor eIF2 gamma, domain 2 / Initiation factor eIF2 gamma, GTP-binding domain / Initiation factor eIF2 gamma, C terminal / Translation initiation factor 2, alpha subunit / Translation initiation factor 2, alpha subunit, middle domain superfamily / Translation initiation factor 2, alpha subunit, C-terminal / IF2a, S1-like domain / Eukaryotic translation initiation factor 2 alpha subunit / : / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / 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. / Translation elongation factor EF1A/initiation factor IF2gamma, C-terminal / 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 / S1 domain profile. / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / : / Ribosomal protein S12e signature. / Ribosomal protein S12e / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S5, eukaryotic/archaeal / Translation elongation factor EFTu-like, domain 2 / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein S2, eukaryotic
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / METHIONINE / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D ...GUANOSINE-5'-TRIPHOSPHATE / METHIONINE / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit H / Eukaryotic translation initiation factor 3 subunit G / Eukaryotic translation initiation factor 2 subunit 1 / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 / Eukaryotic translation initiation factor 2 subunit 2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein eS19 / Eukaryotic translation initiation factor 2 subunit 3 / Eukaryotic translation initiation factor 1 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / Eukaryotic translation initiation factor 1A, X-chromosomal / Eukaryotic translation initiation factor 3 subunit B / Eukaryotic translation initiation factor 3 subunit E / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein eS7 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein eS4, X isoform / Small ribosomal subunit protein eS6 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein eS24 / Small ribosomal subunit protein eS25 / Small ribosomal subunit protein eS26 / Small ribosomal subunit protein eS28 / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Small ribosomal subunit protein eS32 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor 3 subunit M / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit K / Eukaryotic translation initiation factor 3 subunit L
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsPetrychenko, V. / Yi, S.-H. / Liedtke, D. / Peng, B.Z. / Rodnina, M.V. / Fischer, N.
Funding support Germany, 2items
OrganizationGrant numberCountry
Max Planck Society Germany
German Research Foundation (DFG)Leibniz-Preis Germany
CitationJournal: Nat Struct Mol Biol / Year: 2025
Title: Structural basis for translational control by the human 48S initiation complex.
Authors: Valentyn Petrychenko / Sung-Hui Yi / David Liedtke / Bee-Zen Peng / Marina V Rodnina / Niels Fischer /
Abstract: The selection of an open reading frame (ORF) for translation of eukaryotic mRNA relies on remodeling of the scanning 48S initiation complex into an elongation-ready 80S ribosome. Using cryo-electron ...The selection of an open reading frame (ORF) for translation of eukaryotic mRNA relies on remodeling of the scanning 48S initiation complex into an elongation-ready 80S ribosome. Using cryo-electron microscopy, we visualize the key commitment steps orchestrating 48S remodeling in humans. The mRNA Kozak sequence facilitates mRNA scanning in the 48S open state and stabilizes the 48S closed state by organizing the contacts of eukaryotic initiation factors (eIFs) and ribosomal proteins and by reconfiguring mRNA structure. GTPase-triggered large-scale fluctuations of 48S-bound eIF2 facilitate eIF5B recruitment, transfer of initiator tRNA from eIF2 to eIF5B and the release of eIF5 and eIF2. The 48S-bound multisubunit eIF3 complex controls ribosomal subunit joining by coupling eIF exchange to gradual displacement of the eIF3c N-terminal domain from the intersubunit interface. These findings reveal the structural mechanism of ORF selection in human cells and explain how eIF3 could function in the context of the 80S ribosome.
History
DepositionJun 22, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 14, 2024Provider: repository / Type: Initial release
Revision 1.1Oct 2, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
1: Eukaryotic translation initiation factor 3 subunit B
2: Eukaryotic translation initiation factor 3 subunit I
3: Eukaryotic translation initiation factor 3 subunit K
4: Eukaryotic translation initiation factor 3 subunit F
5: Eukaryotic translation initiation factor 3 subunit L
6: Eukaryotic translation initiation factor 3 subunit M
7: mRNA
8: Eukaryotic translation initiation factor 3 subunit H
9: 60S ribosomal protein L41
A: 18S rRNA
B: 40S ribosomal protein S11
C: 40S ribosomal protein S4, X isoform
D: 40S ribosomal protein S9
E: 40S ribosomal protein S23
F: 40S ribosomal protein S30
G: 40S ribosomal protein S7
H: 40S ribosomal protein S27
I: 40S ribosomal protein S13
J: 40S ribosomal protein S15a
K: 40S ribosomal protein S21
L: 40S ribosomal protein S2
M: 40S ribosomal protein S17
N: 40S ribosomal protein SA
O: 40S ribosomal protein S3a
P: 40S ribosomal protein S14
Q: 40S ribosomal protein S26
R: 40S ribosomal protein S8
S: 40S ribosomal protein S6
T: 40S ribosomal protein S24
V: 40S ribosomal protein S5
Y: 40S ribosomal protein S16
Z: 40S ribosomal protein S3
a: 40S ribosomal protein S10
b: 40S ribosomal protein S15
c: Receptor of activated protein C kinase 1
d: 40S ribosomal protein S19
e: 40S ribosomal protein S25
f: 40S ribosomal protein S18
h: 40S ribosomal protein S20
i: 40S ribosomal protein S29
k: Ubiquitin
m: 40S ribosomal protein S12
n: 40S ribosomal protein S28
o: Eukaryotic translation initiation factor 3 subunit G
p: Eukaryotic translation initiation factor 1
q: Eukaryotic translation initiation factor 1A, X-chromosomal
r: Eukaryotic translation initiation factor 2 subunit 1
s: Eukaryotic translation initiation factor 2 subunit 2
t: Eukaryotic translation initiation factor 2 subunit 3
u: Eukaryotic translation initiation factor 3 subunit A
v: Eukaryotic translation initiation factor 3 subunit E
w: Initiator Met-tRNA-i
x: Eukaryotic translation initiation factor 3 subunit D
y: Eukaryotic translation initiation factor 3 subunit C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,256,299149
Polymers2,253,24254
Non-polymers3,05695
Water00
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Eukaryotic translation initiation factor ... , 17 types, 17 molecules 1234568opqrstuvxy

#1: Protein Eukaryotic translation initiation factor 3 subunit B / 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
#2: Protein Eukaryotic translation initiation factor 3 subunit I / 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 K / eIF3k / Eukaryotic translation initiation factor 3 subunit 12 / Muscle-specific gene M9 protein / ...eIF3k / Eukaryotic translation initiation factor 3 subunit 12 / Muscle-specific gene M9 protein / PLAC-24 / eIF-3 p25 / eIF-3 p28


Mass: 25083.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UBQ5
#4: Protein Eukaryotic translation initiation factor 3 subunit F / eIF3f / Deubiquitinating enzyme eIF3f / Eukaryotic translation initiation factor 3 subunit 5 / eIF- ...eIF3f / Deubiquitinating enzyme eIF3f / Eukaryotic translation initiation factor 3 subunit 5 / eIF-3-epsilon / eIF3 p47


Mass: 37593.645 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00303, ubiquitinyl hydrolase 1
#5: Protein Eukaryotic translation initiation factor 3 subunit L / eIF3l / Eukaryotic translation initiation factor 3 subunit 6-interacting protein / Eukaryotic ...eIF3l / Eukaryotic translation initiation factor 3 subunit 6-interacting protein / Eukaryotic translation initiation factor 3 subunit E-interacting protein


Mass: 66803.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y262
#6: Protein Eukaryotic translation initiation factor 3 subunit M / eIF3m / Fetal lung protein B5 / hFL-B5 / PCI domain-containing protein 1


Mass: 42555.832 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q7L2H7
#8: Protein Eukaryotic translation initiation factor 3 subunit H / eIF3h / Eukaryotic translation initiation factor 3 subunit 3 / eIF-3-gamma / eIF3 p40 subunit


Mass: 39979.277 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15372
#44: Protein Eukaryotic translation initiation factor 3 subunit G / eIF3g / Eukaryotic translation initiation factor 3 RNA-binding subunit / eIF-3 RNA-binding subunit ...eIF3g / Eukaryotic translation initiation factor 3 RNA-binding subunit / eIF-3 RNA-binding subunit / Eukaryotic translation initiation factor 3 subunit 4 / eIF-3-delta / eIF3 p42 / eIF3 p44


Mass: 35662.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75821
#45: Protein Eukaryotic translation initiation factor 1 / eIF1 / A121 / Protein translation factor SUI1 homolog / Sui1iso1


Mass: 12752.498 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1, SUI1 / Production host: Escherichia coli (E. coli) / References: UniProt: P41567
#46: Protein Eukaryotic translation initiation factor 1A, X-chromosomal / eIF-1A X isoform / Eukaryotic translation initiation factor 4C / eIF-4C


Mass: 16488.449 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1AX, EIF1A, EIF4C / Production host: Escherichia coli (E. coli) / References: UniProt: P47813
#47: Protein Eukaryotic translation initiation factor 2 subunit 1 / Eukaryotic translation initiation factor 2 subunit alpha / eIF-2alpha


Mass: 36161.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P05198
#48: Protein Eukaryotic translation initiation factor 2 subunit 2 / Eukaryotic translation initiation factor 2 subunit beta / eIF-2-beta


Mass: 38454.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P20042
#49: Protein Eukaryotic translation initiation factor 2 subunit 3 / Eukaryotic translation initiation factor 2 subunit gamma X / eIF-2gX


Mass: 51178.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P41091, protein-synthesizing GTPase
#50: Protein Eukaryotic translation initiation factor 3 subunit A / 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: 166903.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q14152
#51: Protein Eukaryotic translation initiation factor 3 subunit E / eIF3e / Eukaryotic translation initiation factor 3 subunit 6 / Viral integration site protein INT-6 ...eIF3e / Eukaryotic translation initiation factor 3 subunit 6 / Viral integration site protein INT-6 homolog / eIF-3 p48


Mass: 52281.633 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60228
#53: Protein Eukaryotic translation initiation factor 3 subunit D / eIF3d / Eukaryotic translation initiation factor 3 subunit 7 / eIF-3-zeta / eIF3 p66


Mass: 64060.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15371
#54: Protein Eukaryotic translation initiation factor 3 subunit C / eIF3c / Eukaryotic translation initiation factor 3 subunit 8 / eIF3 p110


Mass: 105503.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99613

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RNA chain , 3 types, 3 molecules 7Aw

#7: RNA chain mRNA


Mass: 82412.445 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli)
#10: RNA chain 18S rRNA


Mass: 603245.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: NR_046235.3
#52: RNA chain Initiator Met-tRNA-i


Mass: 24231.510 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: GenBank: 174924

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Protein/peptide , 1 types, 1 molecules 9

#9: Protein/peptide 60S ribosomal protein L41 / HG12 / Large ribosomal subunit protein eL41


Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945

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40S ribosomal protein ... , 31 types, 31 molecules BCDEFGHIJKLMNOPQRSTVYZabdefhimn

#11: Protein 40S ribosomal protein S11 / Small ribosomal subunit protein uS17


Mass: 18468.826 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62280
#12: Protein 40S ribosomal protein S4, X isoform / SCR10 / Single copy abundant mRNA protein / Small ribosomal subunit protein eS4


Mass: 29654.869 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62701
#13: Protein 40S ribosomal protein S9 / Small ribosomal subunit protein uS4


Mass: 22641.564 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46781
#14: Protein 40S ribosomal protein S23 / Small ribosomal subunit protein uS12


Mass: 15844.666 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62266
#15: Protein 40S ribosomal protein S30 / Small ribosomal subunit protein eS30


Mass: 6668.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62861
#16: Protein 40S ribosomal protein S7 / Small ribosomal subunit protein eS7


Mass: 22168.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62081
#17: Protein 40S ribosomal protein S27 / Metallopan-stimulin 1 / MPS-1 / Small ribosomal subunit protein eS27


Mass: 9480.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P42677
#18: Protein 40S ribosomal protein S13 / Small ribosomal subunit protein uS15


Mass: 17259.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62277
#19: Protein 40S ribosomal protein S15a / Small ribosomal subunit protein uS8


Mass: 14865.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62244
#20: Protein 40S ribosomal protein S21 / Small ribosomal subunit protein eS21


Mass: 9124.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63220
#21: Protein 40S ribosomal protein S2 / 40S ribosomal protein S4 / Protein LLRep3 / Small ribosomal subunit protein uS5


Mass: 31376.516 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P15880
#22: Protein 40S ribosomal protein S17 / Small ribosomal subunit protein eS17


Mass: 15578.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08708
#23: Protein 40S ribosomal protein SA / 37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 67 kDa laminin ...37 kDa laminin receptor precursor / 37LRP / 37/67 kDa laminin receptor / LRP/LR / 67 kDa laminin receptor / 67LR / Colon carcinoma laminin-binding protein / Laminin receptor 1 / LamR / Laminin-binding protein precursor p40 / LBP/p40 / Multidrug resistance-associated protein MGr1-Ag / NEM/1CHD4 / Small ribosomal subunit protein uS2


Mass: 32883.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08865
#24: Protein 40S ribosomal protein S3a / Small ribosomal subunit protein eS1 / v-fos transformation effector protein / Fte-1


Mass: 30002.061 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61247
#25: Protein 40S ribosomal protein S14 / Small ribosomal subunit protein uS11


Mass: 16302.772 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62263
#26: Protein 40S ribosomal protein S26 / Small ribosomal subunit protein eS26


Mass: 13047.532 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62854
#27: Protein 40S ribosomal protein S8 / Small ribosomal subunit protein eS8


Mass: 24263.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62241
#28: Protein 40S ribosomal protein S6 / Phosphoprotein NP33 / Small ribosomal subunit protein eS6


Mass: 28751.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62753
#29: Protein 40S ribosomal protein S24 / Small ribosomal subunit protein eS24


Mass: 15463.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62847
#30: Protein 40S ribosomal protein S5 / Small ribosomal subunit protein uS7


Mass: 22913.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46782
#31: Protein 40S ribosomal protein S16 / Small ribosomal subunit protein uS9


Mass: 16477.377 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62249
#32: Protein 40S ribosomal protein S3 / Small ribosomal subunit protein uS3


Mass: 26729.369 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P23396, DNA-(apurinic or apyrimidinic site) lyase
#33: Protein 40S ribosomal protein S10 / Small ribosomal subunit protein eS10


Mass: 18933.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46783
#34: Protein 40S ribosomal protein S15 / RIG protein / Small ribosomal subunit protein uS19


Mass: 17076.207 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62841
#36: Protein 40S ribosomal protein S19 / Small ribosomal subunit protein eS19


Mass: 16091.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P39019
#37: Protein 40S ribosomal protein S25 / Small ribosomal subunit protein eS25


Mass: 13776.224 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62851
#38: Protein 40S ribosomal protein S18 / Ke-3 / Ke3 / Small ribosomal subunit protein uS13


Mass: 17759.777 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62269
#39: Protein 40S ribosomal protein S20 / Small ribosomal subunit protein uS10


Mass: 13398.763 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60866
#40: Protein 40S ribosomal protein S29 / Small ribosomal subunit protein uS14


Mass: 6690.821 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62273
#42: Protein 40S ribosomal protein S12 / Small ribosomal subunit protein eS12


Mass: 14538.987 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25398
#43: Protein 40S ribosomal protein S28 / Small ribosomal subunit protein eS28


Mass: 7855.052 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62857

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Protein , 2 types, 2 molecules ck

#35: Protein Receptor of activated protein C kinase 1 / Cell proliferation-inducing gene 21 protein / Guanine nucleotide-binding protein subunit beta-2- ...Cell proliferation-inducing gene 21 protein / Guanine nucleotide-binding protein subunit beta-2-like 1 / Guanine nucleotide-binding protein subunit beta-like protein 12.3 / Human lung cancer oncogene 7 protein / HLC-7 / Receptor for activated C kinase / Small ribosomal subunit protein RACK1


Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244
#41: Protein Ubiquitin


Mass: 18075.119 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979

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Non-polymers , 4 types, 95 molecules

#55: Chemical...
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 90 / Source method: obtained synthetically / Formula: Mg
#56: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn
#57: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE


Mass: 523.180 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Comment: GTP, energy-carrying molecule*YM
#58: Chemical ChemComp-MET / METHIONINE


Type: L-peptide linking / Mass: 149.211 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H11NO2S

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Details

Has ligand of interestN

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Experimental details

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Experiment

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

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Sample preparation

ComponentName: Human 48S initiation complex 40S-eIF1-eIF1A-eIF2-eIF3-tRNA-Met-mRNA
Type: RIBOSOME / Entity ID: #1-#54 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPES1
295 mMPotassium acetateKOAc1
33.75 mMMagnesium acetateMg(OAc)21
41 mMAdenosine triphosphateATP1
50.5 mMGuanosine triphosphateGTP1
62 mMDithiothreitolDTT1
70.25 mMSpermidine1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: HOMEMADE PLUNGER / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K / Details: Manual blotting & plunge-freezing

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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: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal magnification: 59000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 200 nm / Cs: 0.01 mm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1.5 sec. / Electron dose: 45 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k)
EM imaging opticsSpherical aberration corrector: Electron-optical aberrations were corrected using a CETCOR Cs-corrector (CEOS, Heidelberg) aligned with the CETCORPLUS 4.6.9 software package (CEOS, Heidelberg).

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Processing

EM software
IDNameVersionCategory
1Gautomatch0.56particle selection
2EPU2.3image acquisition
4Gctf1.0.6CTF correction
7UCSF ChimeraX1.4model fitting
9RELION4initial Euler assignment
10RELION4final Euler assignment
12RELION43D reconstruction
19Coot0.9.8.1model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 92749 / Symmetry type: POINT
Atomic model buildingSpace: REAL

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