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- PDB-5u9g: 3.2 A cryo-EM ArfA-RF2 ribosome rescue complex (Structure I) -

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Basic information

Entry
Database: PDB / ID: 5u9g
Title3.2 A cryo-EM ArfA-RF2 ribosome rescue complex (Structure I)
Components
  • (30S ribosomal protein ...) x 20
  • (50S ribosomal protein ...) x 32
  • 16S ribosomal RNA
  • 23S ribosomal RNA
  • 5S ribosomal RNA
  • Alternative ribosome-rescue factor A
  • Peptide chain release factor RF2
  • fMet-tRNA (P- and E-site)
  • truncated mRNA
KeywordsRIBOSOME / ARFA RF2 ribosome rescue complex
Function / homology
Function and homology information


translation release factor activity, codon specific / negative regulation of cytoplasmic translational initiation / stringent response / ribosomal large subunit binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / RNA folding ...translation release factor activity, codon specific / negative regulation of cytoplasmic translational initiation / stringent response / ribosomal large subunit binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / rescue of stalled ribosome / translational termination / DnaA-L2 complex / four-way junction DNA binding / translation repressor activity / negative regulation of translational initiation / translational initiation / negative regulation of DNA-templated DNA replication initiation / regulation of mRNA stability / ribosome assembly / mRNA regulatory element binding translation repressor activity / response to reactive oxygen species / assembly of large subunit precursor of preribosome / transcription elongation factor complex / positive regulation of RNA splicing / DNA endonuclease activity / : / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / transcription antitermination / regulation of cell growth / maintenance of translational fidelity / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / ribosome binding / large ribosomal subunit / ribosome biogenesis / regulation of translation / small ribosomal subunit / 5S rRNA binding / cytoplasmic translation / cytosolic large ribosomal subunit / transferase activity / negative regulation of translation / tRNA binding / molecular adaptor activity / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / response to antibiotic / mRNA binding / negative regulation of DNA-templated transcription / DNA binding / RNA binding / zinc ion binding / membrane / metal ion binding / cytosol / cytoplasm
Similarity search - Function
Alternative ribosome-rescue factor A / Alternative ribosome-rescue factor A / Peptide chain release factor 2 / Peptide chain release factor / PCRF domain / PCRF / Peptide chain release factor class I superfamily / Prokaryotic-type class I peptide chain release factors signature. / Peptide chain release factor class I / RF-1 domain ...Alternative ribosome-rescue factor A / Alternative ribosome-rescue factor A / Peptide chain release factor 2 / Peptide chain release factor / PCRF domain / PCRF / Peptide chain release factor class I superfamily / Prokaryotic-type class I peptide chain release factors signature. / Peptide chain release factor class I / RF-1 domain / Ribosomal protein L1, bacterial-type / Ribosomal protein L10, eubacterial, conserved site / Ribosomal protein L10 signature. / Ribosomal protein L10 / : / Ribosomal protein L1, conserved site / Ribosomal protein L1 / Ribosomal protein L1 signature. / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein L1-like / Ribosomal protein L1/ribosomal biogenesis protein / Ribosomal protein S14, bacterial/plastid / Ribosomal protein L1p/L10e family / Ribosomal protein L11, bacterial-type / 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 S21 / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L11, conserved site / Ribosomal protein L10-like domain superfamily / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L10P / Ribosomal protein L10 / Ribosomal protein L11 signature. / Ribosomal protein L16 signature 1. / : / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L16, conserved site / Ribosomal protein L16 signature 2. / Ribosomal protein L11, N-terminal / Ribosomal protein L17 signature. / 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 L11/L12 / Ribosomal protein L11, C-terminal / Ribosomal protein L11, C-terminal domain superfamily / Ribosomal protein L11/L12, N-terminal domain superfamily / Ribosomal protein L11/L12 / Ribosomal protein L11, N-terminal domain / Ribosomal protein L11, RNA binding domain / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein S14/S29 / Ribosomal protein L28/L24 superfamily / Ribosomal protein L36 signature. / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L32p, bacterial type / 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 L28 / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, non-mitochondrial / Ribosomal protein L5, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein L18, bacterial-type / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein L20 signature. / Ribosomal protein S3, bacterial-type / Ribosomal protein L27, conserved site / Ribosomal protein S6, conserved site / Ribosomal protein L27 signature. / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type
Similarity search - Domain/homology
: / : / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein bS18 / Large ribosomal subunit protein bL36 ...: / : / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein bS18 / Large ribosomal subunit protein bL36 / Small ribosomal subunit protein bS21 / Large ribosomal subunit protein bL20 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS3 / Large ribosomal subunit protein bL34 / Small ribosomal subunit protein bS16 / Large ribosomal subunit protein uL1 / Large ribosomal subunit protein bL17 / 50S ribosomal protein L23 / Large ribosomal subunit protein bL25 / 50S ribosomal protein L35 / 30S ribosomal protein S10 / 50S ribosomal protein L3 / 50S ribosomal protein L4 / 50S ribosomal protein L2 / 30S ribosomal protein S19 / 50S ribosomal protein L22 / 50S ribosomal protein L16 / 50S ribosomal protein L29 / 30S ribosomal protein S17 / 50S ribosomal protein L14 / 50S ribosomal protein L24 / 50S ribosomal protein L5 / 30S ribosomal protein S14 / 30S ribosomal protein S8 / 50S ribosomal protein L6 / 50S ribosomal protein L18 / 30S ribosomal protein S5 / 50S ribosomal protein L30 / 30S ribosomal protein S4 / 50S ribosomal protein L33 / 50S ribosomal protein L11 / 50S ribosomal protein L10 / 30S ribosomal protein S12 / 30S ribosomal protein S7 / 30S ribosomal protein S20 / 30S ribosomal protein S15 / 50S ribosomal protein L27 / 50S ribosomal protein L21 / 30S ribosomal protein S9 / 50S ribosomal protein L13 / 50S ribosomal protein L31 / 50S ribosomal protein L32 / 50S ribosomal protein L9 / 30S ribosomal protein S6 / 30S ribosomal protein S2 / 50S ribosomal protein L19 / : / 30S ribosomal protein S13 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL15 / Peptide chain release factor RF2 / Large ribosomal subunit protein uL10 / Large ribosomal subunit protein uL11 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein uL1 / 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 / 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
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria)
Escherichia coli (E. coli)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsDemo, G. / Svidritskiy, E. / Madireddy, R. / Diaz-Avalos, R. / Grant, T. / Grigorieff, N. / Sousa, D. / Korostelev, A.A.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM107465 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM106105 United States
CitationJournal: Elife / Year: 2017
Title: Mechanism of ribosome rescue by ArfA and RF2.
Authors: Gabriel Demo / Egor Svidritskiy / Rohini Madireddy / Ruben Diaz-Avalos / Timothy Grant / Nikolaus Grigorieff / Duncan Sousa / Andrei A Korostelev /
Abstract: ArfA rescues ribosomes stalled on truncated mRNAs by recruiting release factor RF2, which normally binds stop codons to catalyze peptide release. We report two 3.2 Å resolution cryo-EM structures - ...ArfA rescues ribosomes stalled on truncated mRNAs by recruiting release factor RF2, which normally binds stop codons to catalyze peptide release. We report two 3.2 Å resolution cryo-EM structures - determined from a single sample - of the 70S ribosome with ArfA•RF2 in the A site. In both states, the ArfA C-terminus occupies the mRNA tunnel downstream of the A site. One state contains a compact inactive RF2 conformation. Ordering of the ArfA N-terminus in the second state rearranges RF2 into an extended conformation that docks the catalytic GGQ motif into the peptidyl-transferase center. Our work thus reveals the structural dynamics of ribosome rescue. The structures demonstrate how ArfA 'senses' the vacant mRNA tunnel and activates RF2 to mediate peptide release without a stop codon, allowing stalled ribosomes to be recycled.
History
DepositionDec 16, 2016Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 22, 2017Provider: repository / Type: Initial release
Revision 1.1Mar 29, 2017Group: Database references
Revision 1.2Sep 27, 2017Group: Author supporting evidence / Data collection / Experimental preparation
Category: em_sample_support / em_software / pdbx_audit_support
Item: _em_sample_support.grid_type / _em_software.name / _pdbx_audit_support.funding_organization
Revision 1.3Jul 18, 2018Group: Data collection / Category: em_software / Item: _em_software.name
Revision 1.4Jan 1, 2020Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.5Mar 13, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id

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Structure visualization

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Assembly

Deposited unit
A: 16S ribosomal RNA
01: 23S ribosomal RNA
02: 5S ribosomal RNA
Y: Alternative ribosome-rescue factor A
X: fMet-tRNA (P- and E-site)
03: 50S ribosomal protein L1
04: 50S ribosomal protein L2
05: 50S ribosomal protein L3
06: 50S ribosomal protein L4
07: 50S ribosomal protein L5
08: 50S ribosomal protein L6
09: 50S ribosomal protein L9
10: 50S ribosomal protein L10
11: 50S ribosomal protein L11
12: 50S ribosomal protein L13
13: 50S ribosomal protein L14
14: 50S ribosomal protein L15
15: 50S ribosomal protein L16
16: 50S ribosomal protein L17
17: 50S ribosomal protein L18
18: 50S ribosomal protein L19
19: 50S ribosomal protein L20
20: 50S ribosomal protein L21
21: 50S ribosomal protein L22
22: 50S ribosomal protein L23
23: 50S ribosomal protein L24
24: 50S ribosomal protein L25
25: 50S ribosomal protein L27
26: 50S ribosomal protein L28
27: 50S ribosomal protein L29
28: 50S ribosomal protein L30
29: 50S ribosomal protein L31
30: 50S ribosomal protein L32
31: 50S ribosomal protein L33
32: 50S ribosomal protein L34
33: 50S ribosomal protein L35
34: 50S ribosomal protein L36
V: truncated mRNA
W: fMet-tRNA (P- and E-site)
Z: Peptide chain release factor RF2
B: 30S ribosomal protein S2
C: 30S ribosomal protein S3
D: 30S ribosomal protein S4
E: 30S ribosomal protein S5
F: 30S ribosomal protein S6
G: 30S ribosomal protein S7
H: 30S ribosomal protein S8
I: 30S ribosomal protein S9
J: 30S ribosomal protein S10
K: 30S ribosomal protein S11
L: 30S ribosomal protein S12
M: 30S ribosomal protein S13
N: 30S ribosomal protein S14
O: 30S ribosomal protein S15
P: 30S ribosomal protein S16
Q: 30S ribosomal protein S17
R: 30S ribosomal protein S18
S: 30S ribosomal protein S19
T: 30S ribosomal protein S20
U: 30S ribosomal protein S21
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,305,207409
Polymers2,296,68460
Non-polymers8,524349
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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RNA chain , 5 types, 6 molecules A0102XWV

#1: RNA chain 16S ribosomal RNA /


Mass: 498725.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 944404559
#2: RNA chain 23S ribosomal RNA /


Mass: 941322.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 42756
#3: RNA chain 5S ribosomal RNA /


Mass: 38483.926 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 1072784372
#5: RNA chain fMet-tRNA (P- and E-site)


Mass: 24802.785 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 1114191980
#38: RNA chain truncated mRNA


Mass: 4597.844 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli (E. coli)

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Protein , 2 types, 2 molecules YZ

#4: Protein Alternative ribosome-rescue factor A /


Mass: 8190.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Strain: K12 / Gene: arfA, yhdL, b4550, JW3253 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P36675
#39: Protein Peptide chain release factor RF2 / RF-2


Mass: 41300.660 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K12 / Gene: prfB, supK, b2891, JW5847 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P07012

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50S ribosomal protein ... , 32 types, 32 molecules 0304050607080910111213141516171819202122232425262728293031323334

#6: Protein 50S ribosomal protein L1 /


Mass: 24765.660 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MIX0, UniProt: P0A7L0*PLUS
#7: Protein 50S ribosomal protein L2 /


Mass: 29923.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9F8, UniProt: P60422*PLUS
#8: Protein 50S ribosomal protein L3 /


Mass: 22277.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9F5, UniProt: P60438*PLUS
#9: Protein 50S ribosomal protein L4 /


Mass: 22121.566 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9F6, UniProt: P60723*PLUS
#10: Protein 50S ribosomal protein L5 /


Mass: 20333.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G7, UniProt: P62399*PLUS
#11: Protein 50S ribosomal protein L6 /


Mass: 18932.791 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9H0, UniProt: P0AG55*PLUS
#12: Protein 50S ribosomal protein L9 /


Mass: 15789.020 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZI15, UniProt: P0A7R1*PLUS
#13: Protein 50S ribosomal protein L10 /


Mass: 17736.596 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZA73, UniProt: P0A7J3*PLUS
#14: Protein 50S ribosomal protein L11 /


Mass: 14894.362 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZA71, UniProt: P0A7J7*PLUS
#15: Protein 50S ribosomal protein L13 /


Mass: 16050.606 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZET0, UniProt: P0AA10*PLUS
#16: Protein 50S ribosomal protein L14 /


Mass: 13565.067 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G5, UniProt: P0ADY3*PLUS
#17: Protein 50S ribosomal protein L15 /


Mass: 15008.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D8BU19, UniProt: P02413*PLUS
#18: Protein 50S ribosomal protein L16 /


Mass: 15312.269 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G2, UniProt: P0ADY7*PLUS
#19: Protein 50S ribosomal protein L17 /


Mass: 14423.683 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7N179, UniProt: P0AG44*PLUS
#20: Protein 50S ribosomal protein L18 /


Mass: 12794.668 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9H1, UniProt: P0C018*PLUS
#21: Protein 50S ribosomal protein L19 /


Mass: 13159.278 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZKU3, UniProt: P0A7K6*PLUS
#22: Protein 50S ribosomal protein L20 /


Mass: 13528.024 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MAS6, UniProt: P0A7L3*PLUS
#23: Protein 50S ribosomal protein L21 /


Mass: 11586.374 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZEN7, UniProt: P0AG48*PLUS
#24: Protein 50S ribosomal protein L22 /


Mass: 12253.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G0, UniProt: P61175*PLUS
#25: Protein 50S ribosomal protein L23 /


Mass: 11222.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7X2Z9, UniProt: P0ADZ0*PLUS
#26: Protein 50S ribosomal protein L24 /


Mass: 11339.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G6, UniProt: P60624*PLUS
#27: Protein 50S ribosomal protein L25 /


Mass: 10713.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7XH79, UniProt: P68919*PLUS
#28: Protein 50S ribosomal protein L27 /


Mass: 9146.540 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZEN6, UniProt: P0A7L8*PLUS
#29: Protein 50S ribosomal protein L28 /


Mass: 9027.551 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: S0YB49, UniProt: P0A7M2*PLUS
#30: Protein 50S ribosomal protein L29 /


Mass: 7286.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G3, UniProt: P0A7M6*PLUS
#31: Protein 50S ribosomal protein L30 /


Mass: 6554.820 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9H3, UniProt: P0AG51*PLUS
#32: Protein 50S ribosomal protein L31 /


Mass: 7887.117 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZFP6, UniProt: P0A7M9*PLUS
#33: Protein 50S ribosomal protein L32 /


Mass: 6463.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZGG2, UniProt: P0A7N4*PLUS
#34: Protein 50S ribosomal protein L33 /


Mass: 6388.631 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9P0, UniProt: P0A7N9*PLUS
#35: Protein/peptide 50S ribosomal protein L34 /


Mass: 5397.463 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MGC4, UniProt: P0A7P5*PLUS
#36: Protein 50S ribosomal protein L35 /


Mass: 7313.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z814, UniProt: P0A7Q1*PLUS
#37: Protein/peptide 50S ribosomal protein L36 /


Mass: 4377.390 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: A0A0E2L017, UniProt: P0A7Q6*PLUS

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

#40: Protein 30S ribosomal protein S2 /


Mass: 26781.670 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZK99, UniProt: P0A7V0*PLUS
#41: Protein 30S ribosomal protein S3 /


Mass: 26031.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MCS9, UniProt: P0A7V3*PLUS
#42: Protein 30S ribosomal protein S4 /


Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9H7, UniProt: P0A7V8*PLUS
#43: Protein 30S ribosomal protein S5 /


Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9H2, UniProt: P0A7W1*PLUS
#44: Protein 30S ribosomal protein S6 /


Mass: 15211.058 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZI17, UniProt: P02358*PLUS
#45: Protein 30S ribosomal protein S7 /


Mass: 17637.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZAN1, UniProt: P02359*PLUS
#46: Protein 30S ribosomal protein S8 /


Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G9, UniProt: P0A7W7*PLUS
#47: Protein 30S ribosomal protein S9 /


Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZES9, UniProt: P0A7X3*PLUS
#48: Protein 30S ribosomal protein S10 /


Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9F4, UniProt: P0A7R5*PLUS
#49: Protein 30S ribosomal protein S11 /


Mass: 13870.975 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MCR3, UniProt: P0A7R9*PLUS
#50: Protein 30S ribosomal protein S12 /


Mass: 13768.157 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZAN0, UniProt: P0A7S3*PLUS
#51: Protein 30S ribosomal protein S13 /


Mass: 13128.467 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: H4UQ02, UniProt: P0A7S9*PLUS
#52: Protein 30S ribosomal protein S14 /


Mass: 11606.560 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G8, UniProt: P0AG59*PLUS
#53: Protein 30S ribosomal protein S15 /


Mass: 10290.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZEL4, UniProt: P0ADZ4*PLUS
#54: Protein 30S ribosomal protein S16 /


Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: B7MIU7, UniProt: P0A7T3*PLUS
#55: Protein 30S ribosomal protein S17 /


Mass: 9724.491 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9G4, UniProt: P0AG63*PLUS
#56: Protein 30S ribosomal protein S18 /


Mass: 9005.472 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: A0A0E2KXL3, UniProt: P0A7T7*PLUS
#57: Protein 30S ribosomal protein S19 /


Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7Z9F9, UniProt: P0A7U3*PLUS
#58: Protein 30S ribosomal protein S20 /


Mass: 9708.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: D7ZAS2, UniProt: P0A7U7*PLUS
#59: Protein 30S ribosomal protein S21 /


Mass: 8524.039 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: A0A0E2L2J1, UniProt: P68679*PLUS

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Non-polymers , 2 types, 349 molecules

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


Mass: 24.305 Da / Num. of mol.: 348 / Source method: obtained synthetically / Formula: Mg
#61: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn

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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: ArfA-RF2 ribosome rescue complex (Structure I) / Type: RIBOSOME / Entity ID: #1-#59 / Source: MULTIPLE SOURCES
Molecular weightValue: 2.5 MDa / Experimental value: NO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MRE600
Source (recombinant)Organism: Escherichia coli (E. coli) / Strain: K-12
Buffer solutionpH: 7
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMTris bufferTris-HClTris1
2100 mMamonium chlorideNH4Cl1
320 mMmagnesium chlorideMgCl21
40.5 mMEthylenediaminetetraacetic acidEDTAEthylenediaminetetraacetic acid1
56 mMbetamercaptoethanolBME1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: Using a Solarus 950 plasma cleaning system. The forward RF target was set to 7w.
Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: C-flat-2/2
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277.15 K

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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 FIELDBright-field microscopy / Nominal magnification: 29000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 1.2 e/Å2 / Detector mode: COUNTING / Film or detector model: DIRECT ELECTRON DE-20 (5k x 3k) / Num. of grids imaged: 1 / Num. of real images: 3760
Image scansMovie frames/image: 54 / Used frames/image: 2-27

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Processing

EM software
IDNameVersionCategory
1EMAN2particle selection
2Leginonimage acquisition
4CTFFIND4CTF correction
7UCSF Chimeramodel fitting
9RSRefmodel refinement
10PHENIXmodel refinement
11FREALIGN9.11initial Euler assignment
12FREALIGN9.11final Euler assignment
13FREALIGN9.11classification
14FREALIGN9.113D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 539311
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 139861 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingB value: 100 / Protocol: OTHER / Space: REAL / Target criteria: Correlation coefficient

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