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- PDB-7ac7: Structure of accomodated trans-translation complex on E. Coli sta... -

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Basic information

Entry
Database: PDB / ID: 7ac7
TitleStructure of accomodated trans-translation complex on E. Coli stalled ribosome.
Components
  • (30S ribosomal protein ...) x 20
  • (50S ribosomal protein ...) x 30
  • 16S ribosomal RNA
  • 23S ribosomal RNA
  • 5S ribosomal RNA
  • Nascent peptide
  • SsrA-binding protein
  • mRNA
  • tRNA-Phe
  • transfer-messenger RNA (tmRNA)
KeywordsTRANSLATION / Trans-translation / tmRNA / SmpB / Ribosome
Function / homology
Function and homology information


trans-translation / negative regulation of cytoplasmic translational initiation / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis ...trans-translation / negative regulation of cytoplasmic translational initiation / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / four-way junction DNA binding / DnaA-L2 complex / translation repressor activity / negative regulation of translational initiation / regulation of mRNA stability / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / positive regulation of RNA splicing / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / response to reactive oxygen species / ribosome assembly / transcription elongation factor complex / DNA endonuclease activity / transcription antitermination / translational initiation / regulation of cell growth / DNA-templated transcription termination / response to radiation / maintenance of translational fidelity / mRNA 5'-UTR binding / ribosome biogenesis / large ribosomal subunit / regulation of translation / ribosome binding / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol
Similarity search - Function
SsrA-binding protein / SsrA-binding protein, conserved site / Small protein B / SmpB protein / SsrA-binding protein. / Ribosomal protein L10, eubacterial, conserved site / Ribosomal protein L10 signature. / Ribosomal protein L10 / : / Ribosomal protein S21, conserved site ...SsrA-binding protein / SsrA-binding protein, conserved site / Small protein B / SmpB protein / SsrA-binding protein. / Ribosomal protein L10, eubacterial, conserved site / Ribosomal protein L10 signature. / Ribosomal protein L10 / : / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein S14, bacterial/plastid / Ribosomal protein L31 type A / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein S21 / Ribosomal protein L10-like domain superfamily / Ribosomal protein L10P / Ribosomal protein L10 / Ribosomal protein L16 signature 1. / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 2. / Ribosomal protein L16, conserved site / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L9 signature. / : / Ribosomal protein L9, bacteria/chloroplast / Ribosomal protein L9, C-terminal / Ribosomal protein L9, C-terminal domain / Ribosomal protein L9, C-terminal domain superfamily / Ribosomal protein L17 signature. / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L36 signature. / Ribosomal protein L32p, bacterial type / Ribosomal protein L28/L24 superfamily / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / : / Ribosomal protein L9, N-terminal domain superfamily / Ribosomal protein L9 / Ribosomal protein L9, N-terminal / Ribosomal protein L9, N-terminal domain / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L28 / Ribosomal protein L35, non-mitochondrial / Ribosomal protein L18, bacterial-type / : / Ribosomal protein L6, bacterial-type / Ribosomal protein S3, bacterial-type / Ribosomal protein S19, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein L5, bacterial-type / Ribosomal protein L36 / Ribosomal protein S4, bacterial-type / Ribosomal protein L36 superfamily / Ribosomal protein L36 / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L27, conserved site / Ribosomal protein L27 signature. / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein L20 signature. / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L35 / Ribosomal protein L33 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein L33 / Ribosomal L28 family / Ribosomal protein L33 superfamily
Similarity search - Domain/homology
RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL10 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 ...RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL10 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL31 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL36A / Large ribosomal subunit protein bL9 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / SsrA-binding protein / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL23 / Small ribosomal subunit protein uS15 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL6 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein uL5 / Small ribosomal subunit protein bS21 / Large ribosomal subunit protein bL25
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Escherichia coli K-12 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.08 Å
AuthorsGuyomar, C. / D'Urso, G. / Chat, S. / Giudice, E. / Gillet, R.
Funding support France, 4items
OrganizationGrant numberCountry
French National Research AgencyRIBOTARGET - 18-JAM2-0005-03 France
French Infrastructure for Integrated Structural Biology (FRISBI)ANR-10-INBS-05 France
European Union (EU)Erasmus+ France
French Ministry of Armed Forces France
CitationJournal: Nat Commun / Year: 2021
Title: Structures of tmRNA and SmpB as they transit through the ribosome.
Authors: Charlotte Guyomar / Gaetano D'Urso / Sophie Chat / Emmanuel Giudice / Reynald Gillet /
Abstract: In bacteria, trans-translation is the main rescue system, freeing ribosomes stalled on defective messenger RNAs. This mechanism is driven by small protein B (SmpB) and transfer-messenger RNA (tmRNA), ...In bacteria, trans-translation is the main rescue system, freeing ribosomes stalled on defective messenger RNAs. This mechanism is driven by small protein B (SmpB) and transfer-messenger RNA (tmRNA), a hybrid RNA known to have both a tRNA-like and an mRNA-like domain. Here we present four cryo-EM structures of the ribosome during trans-translation at resolutions from 3.0 to 3.4 Å. These include the high-resolution structure of the whole pre-accommodated state, as well as structures of the accommodated state, the translocated state, and a translocation intermediate. Together, they shed light on the movements of the tmRNA-SmpB complex in the ribosome, from its delivery by the elongation factor EF-Tu to its passage through the ribosomal A and P sites after the opening of the B1 bridges. Additionally, we describe the interactions between the tmRNA-SmpB complex and the ribosome. These explain why the process does not interfere with canonical translation.
History
DepositionSep 10, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 18, 2021Provider: repository / Type: Initial release
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Revision 1.1Sep 29, 2021Group: Data collection / Database references
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_database_proc / pdbx_seq_map_depositor_info / pdbx_struct_ref_seq_depositor_info
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _em_admin.last_update / _pdbx_seq_map_depositor_info.one_letter_code / _pdbx_seq_map_depositor_info.one_letter_code_mod / _pdbx_struct_ref_seq_depositor_info.db_seq_one_letter_code
Revision 1.2Apr 24, 2024Group: Data collection / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / pdbx_initial_refinement_model / struct_conn
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Revision 1.3Mar 12, 2025Group: Data collection / Structure summary
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Item: _chem_comp_atom.atom_id / _chem_comp_atom.pdbx_aromatic_flag ..._chem_comp_atom.atom_id / _chem_comp_atom.pdbx_aromatic_flag / _chem_comp_bond.atom_id_1 / _chem_comp_bond.atom_id_2 / _chem_comp_bond.pdbx_aromatic_flag / _chem_comp_bond.value_order / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.1Mar 12, 2025Data content type: EM metadata / Data content type: EM metadata / Group: Experimental summary / Data content type: EM metadata / Category: em_admin / Data content type: EM metadata / Item: _em_admin.last_update

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Structure visualization

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Assembly

Deposited unit
1: 23S ribosomal RNA
2: 16S ribosomal RNA
3: 5S ribosomal RNA
4: transfer-messenger RNA (tmRNA)
5: SsrA-binding protein
7: tRNA-Phe
8: mRNA
A: 50S ribosomal protein L27
B: 50S ribosomal protein L2
C: 50S ribosomal protein L3
D: 50S ribosomal protein L4
E: 50S ribosomal protein L5
F: 50S ribosomal protein L6
G: 50S ribosomal protein L9
H: 50S ribosomal protein L10
J: 50S ribosomal protein L13
K: 50S ribosomal protein L14
L: 50S ribosomal protein L15
M: 50S ribosomal protein L16
N: 50S ribosomal protein L17
O: 50S ribosomal protein L18
P: 50S ribosomal protein L19
Q: 50S ribosomal protein L20
R: 50S ribosomal protein L21
S: 50S ribosomal protein L22
T: 50S ribosomal protein L23
U: 50S ribosomal protein L24
V: 50S ribosomal protein L25
W: Nascent peptide
X: 50S ribosomal protein L28
Y: 50S ribosomal protein L29
Z: 50S ribosomal protein L30
a: 50S ribosomal protein L31
b: 50S ribosomal protein L32
c: 50S ribosomal protein L33
d: 50S ribosomal protein L34
e: 50S ribosomal protein L35
f: 50S ribosomal protein L36
g: 30S ribosomal protein S2
h: 30S ribosomal protein S3
i: 30S ribosomal protein S4
j: 30S ribosomal protein S5
k: 30S ribosomal protein S6
l: 30S ribosomal protein S7
m: 30S ribosomal protein S8
n: 30S ribosomal protein S9
o: 30S ribosomal protein S10
p: 30S ribosomal protein S11
q: 30S ribosomal protein S12
r: 30S ribosomal protein S13
s: 30S ribosomal protein S14
t: 30S ribosomal protein S15
u: 30S ribosomal protein S16
v: 30S ribosomal protein S17
w: 30S ribosomal protein S18
x: 30S ribosomal protein S19
y: 30S ribosomal protein S20
z: 30S ribosomal protein S21
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,303,797501
Polymers2,292,94858
Non-polymers10,849443
Water00
1


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

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Components

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RNA chain , 6 types, 6 molecules 123478

#1: RNA chain 23S ribosomal RNA


Mass: 941526.438 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#2: RNA chain 16S ribosomal RNA


Mass: 499238.000 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#3: RNA chain 5S ribosomal RNA


Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#4: RNA chain transfer-messenger RNA (tmRNA)


Mass: 117212.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: ssra / Plasmid: pBSTNAV / Production host: Escherichia coli (E. coli) / Variant (production host): JM101tr
#6: RNA chain tRNA-Phe


Mass: 24750.010 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: Sigma-Aldrich / Source: (synth.) Escherichia coli (E. coli)
#7: RNA chain mRNA


Mass: 4889.930 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli)

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50S ribosomal protein ... , 30 types, 30 molecules ABCDEFGHJKLMNOPQRSTUVXYZabcdef

#8: Protein 50S ribosomal protein L27 / Large ribosomal subunit protein bL27


Mass: 9015.344 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L8
#9: Protein 50S ribosomal protein L2 / Large ribosomal subunit protein uL2


Mass: 29663.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60422
#10: Protein 50S ribosomal protein L3 / Large ribosomal subunit protein uL3


Mass: 22277.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60438
#11: Protein 50S ribosomal protein L4 / Large ribosomal subunit protein uL4


Mass: 22121.566 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60723
#12: Protein 50S ribosomal protein L5 / Large ribosomal subunit protein uL5


Mass: 20073.234 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P62399
#13: Protein 50S ribosomal protein L6 / Large ribosomal subunit protein uL6


Mass: 18672.418 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG55
#14: Protein 50S ribosomal protein L9 / Large ribosomal subunit protein bL9


Mass: 15789.020 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R1
#15: Protein 50S ribosomal protein L10 / 50S ribosomal protein L8 / Large ribosomal subunit protein uL10


Mass: 13981.147 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7J3
#16: Protein 50S ribosomal protein L13 / Large ribosomal subunit protein uL13


Mass: 15919.411 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AA10
#17: Protein 50S ribosomal protein L14 / Large ribosomal subunit protein uL14


Mass: 13565.067 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADY3
#18: Protein 50S ribosomal protein L15 / Large ribosomal subunit protein uL15


Mass: 15008.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02413
#19: Protein 50S ribosomal protein L16 / Large ribosomal subunit protein uL16


Mass: 15327.261 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADY7
#20: Protein 50S ribosomal protein L17 / Large ribosomal subunit protein bL17


Mass: 13592.823 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG44
#21: Protein 50S ribosomal protein L18 / Large ribosomal subunit protein uL18


Mass: 12548.383 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0C018
#22: Protein 50S ribosomal protein L19 / Large ribosomal subunit protein bL19


Mass: 13028.082 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7K6
#23: Protein 50S ribosomal protein L20 / Large ribosomal subunit protein bL20


Mass: 13396.828 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L3
#24: Protein 50S ribosomal protein L21 / Large ribosomal subunit protein bL21


Mass: 11586.374 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG48
#25: Protein 50S ribosomal protein L22 / Large ribosomal subunit protein uL22


Mass: 12122.164 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P61175
#26: Protein 50S ribosomal protein L23 / Large ribosomal subunit protein uL23


Mass: 10661.560 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADZ0
#27: Protein 50S ribosomal protein L24 / Large ribosomal subunit protein uL24


Mass: 11208.054 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60624
#28: Protein 50S ribosomal protein L25 / Large ribosomal subunit protein bL25


Mass: 10713.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P68919
#30: Protein 50S ribosomal protein L28 / Large ribosomal subunit protein bL28


Mass: 8896.354 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M2
#31: Protein 50S ribosomal protein L29 / Large ribosomal subunit protein uL29


Mass: 6826.881 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M6
#32: Protein 50S ribosomal protein L30 / Large ribosomal subunit protein uL30


Mass: 6223.367 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG51
#33: Protein 50S ribosomal protein L31 / Large ribosomal subunit protein bL31-A


Mass: 7516.693 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M9
#34: Protein 50S ribosomal protein L32 / Large ribosomal subunit protein bL32


Mass: 6131.992 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N4
#35: Protein 50S ribosomal protein L33 / Large ribosomal subunit protein bL33


Mass: 6057.179 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N9
#36: Protein/peptide 50S ribosomal protein L34 / Large ribosomal subunit protein bL34


Mass: 5397.463 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7P5
#37: Protein 50S ribosomal protein L35 / Large ribosomal subunit protein bL35 / Ribosomal protein A


Mass: 7181.835 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q1
#38: Protein/peptide 50S ribosomal protein L36 / Large ribosomal subunit protein bL36-A / Ribosomal protein B


Mass: 4320.338 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q6

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30S ribosomal protein ... , 20 types, 20 molecules ghijklmnopqrstuvwxyz

#39: Protein 30S ribosomal protein S2 / Small ribosomal subunit protein uS2


Mass: 25072.867 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V0
#40: Protein 30S ribosomal protein S3 / Small ribosomal subunit protein uS3


Mass: 23248.994 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V3
#41: Protein 30S ribosomal protein S4 / Small ribosomal subunit protein uS4


Mass: 23383.002 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V8
#42: Protein 30S ribosomal protein S5 / Small ribosomal subunit protein uS5


Mass: 16475.037 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W1
#43: Protein 30S ribosomal protein S6 / Small ribosomal subunit protein bS6


Mass: 12125.993 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02358
#44: Protein 30S ribosomal protein S7 / Small ribosomal subunit protein uS7


Mass: 16861.523 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02359
#45: Protein 30S ribosomal protein S8 / Small ribosomal subunit protein uS8


Mass: 14015.361 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W7
#46: Protein 30S ribosomal protein S9 / Small ribosomal subunit protein uS9


Mass: 14397.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7X3
#47: Protein 30S ribosomal protein S10 / Small ribosomal subunit protein uS10


Mass: 11254.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R5
#48: Protein 30S ribosomal protein S11 / Small ribosomal subunit protein uS11


Mass: 12487.200 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R9
#49: Protein 30S ribosomal protein S12 / Small ribosomal subunit protein uS12


Mass: 13683.053 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S3
#50: Protein 30S ribosomal protein S13 / Small ribosomal subunit protein uS13


Mass: 12738.911 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S9
#51: Protein 30S ribosomal protein S14 / Small ribosomal subunit protein uS14


Mass: 11475.364 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG59
#52: Protein 30S ribosomal protein S15 / Small ribosomal subunit protein uS15


Mass: 10072.543 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADZ4
#53: Protein 30S ribosomal protein S16 / Small ribosomal subunit protein bS16


Mass: 9136.495 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T3
#54: Protein 30S ribosomal protein S17 / Small ribosomal subunit protein uS17


Mass: 9263.946 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG63
#55: Protein 30S ribosomal protein S18 / Small ribosomal subunit protein bS18


Mass: 7606.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T7
#56: Protein 30S ribosomal protein S19 / Small ribosomal subunit protein uS19


Mass: 9349.939 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U3
#57: Protein 30S ribosomal protein S20 / Small ribosomal subunit protein bS20


Mass: 9506.190 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U7
#58: Protein 30S ribosomal protein S21 / Small ribosomal subunit protein bS21


Mass: 8392.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P68679

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Protein / Protein/peptide , 2 types, 2 molecules 5W

#29: Protein/peptide Nascent peptide


Mass: 236.267 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#5: Protein SsrA-binding protein / Small protein B


Mass: 16933.508 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: smpB, smqB, b2620, JW2601 / Plasmid: pET22b(+) / Production host: Escherichia coli BL21(DE3) (bacteria) / Variant (production host): delta ssrA / References: UniProt: P0A832

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Non-polymers , 2 types, 443 molecules

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


Mass: 24.305 Da / Num. of mol.: 441 / Source method: obtained synthetically / Formula: Mg
#60: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN
Has protein modificationY

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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

Component
IDNameTypeEntity IDParent-IDSource
1Structure of accomodated trans-translation complex on E. Coli stalled ribosome.RIBOSOME#1-#580MULTIPLE SOURCES
2tmRNARIBOSOME#41RECOMBINANT
3SsrA-binding proteinRIBOSOME#51RECOMBINANT
4tRNA, mRNARIBOSOME#6-#71RECOMBINANT
5RibosomeRIBOSOME#1-#3, #8-#581NATURAL
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23Escherichia coli K-12 (bacteria)83333
34Escherichia coli (E. coli)562
45Escherichia coli K-12 (bacteria)83333
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23Escherichia coli BL21(DE3) (bacteria)469008
34synthetic construct (others)32630
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
15 mMHepes-KOHC8H18N2O4S-KOH1
29 mMMagnesium acetateMgOAC1
350 mMPotassium ChlorideKCl1
410 mMAmonium ChlorideNH4Cl1
51 mMDithiothreitolC4H10O2S21
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 10mA / Grid material: COPPER / Grid type: Quantifoil R2/2
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K / Details: blot for 3.5 seconds before plunging

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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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: -2000 nm / Nominal defocus min: -700 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN
Image recordingAverage exposure time: 10 sec. / Electron dose: 29 e/Å2 / Film or detector model: GATAN K2 BASE (4k x 4k) / Num. of real images: 22350
Image scansWidth: 3710 / Height: 3838

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Processing

EM software
IDNameVersionCategory
2SerialEMimage acquisition
4Gctf1.0.6CTF correction
7UCSF Chimera1.11.2model fitting
9PHENIX1.18.2model refinement
10Coot0.9model refinement
11RELION3.0.8initial Euler assignment
12RELION3.0.8final Euler assignment
13RELION3.0.8classification
14RELION3.0.83D reconstruction
CTF correctionType: NONE
Particle selectionNum. of particles selected: 580382
3D reconstructionResolution: 3.08 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 36069 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL
Atomic model buildingPDB-ID: 4YBB

4ybb


Accession code: 4YBB / Source name: PDB / Type: experimental model
RefinementStereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 116.66 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0022167985
ELECTRON MICROSCOPYf_angle_d0.5062251649
ELECTRON MICROSCOPYf_chiral_restr0.032332164
ELECTRON MICROSCOPYf_plane_restr0.004513227
ELECTRON MICROSCOPYf_dihedral_angle_d17.056278281

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