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- PDB-8a3l: Structural insights into the binding of bS1 to the ribosome -

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Basic information

Entry
Database: PDB / ID: 8a3l
TitleStructural insights into the binding of bS1 to the ribosome
Components
  • (30S ribosomal protein ...) x 21
  • (50S ribosomal protein ...) x 29
  • 16S ribosomal RNA
  • 23S ribosomal RNA
  • 5S ribosomal RNA
  • E-site tRNA
  • P-site fMet-tRNA(fMet)
  • mRNA
KeywordsRIBOSOME / bS1 / Cryo-EM / Translation
Function / homology
Function and homology information


positive regulation of cytoplasmic 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 / positive regulation of ribosome biogenesis / endoribonuclease inhibitor activity ...positive regulation of cytoplasmic 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 / positive regulation of ribosome biogenesis / endoribonuclease inhibitor activity / 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 / ribosome assembly / transcription elongation factor complex / regulation of DNA-templated transcription elongation / cytosolic ribosome assembly / response to reactive oxygen species / 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 / regulation of translation / large ribosomal subunit / transferase activity / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / small ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / single-stranded RNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
: / Ribosomal protein S1 / Ribosomal protein S1-like / S1 domain profile. / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain ...: / Ribosomal protein S1 / Ribosomal protein S1-like / S1 domain profile. / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain / Ribosomal protein L31 type A / Ribosomal protein S21 superfamily / S1 domain / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S21 / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein S21 / : / 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 S19, bacterial-type / Ribosomal protein S3, bacterial-type / Ribosomal protein L5, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein S11, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S4, bacterial-type / Ribosomal protein L36 / 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 L20 signature. / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L35 / Ribosomal protein L33 / Ribosomal protein L33 / Ribosomal L28 family / Ribosomal protein L33 superfamily / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein L16 / Ribosomal protein L28/L24
Similarity search - Domain/homology
: / : / : / : / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein bS6 ...: / : / : / : / : / 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 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 / 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 / Small ribosomal subunit protein bS1 / 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 K-12 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.42 Å
AuthorsD'Urso, G. / Chat, S. / Gillet, R. / Giudice, E.
Funding support France, 1items
OrganizationGrant numberCountry
Centre National de la Recherche Scientifique (CNRS) France
CitationJournal: Nucleic Acids Res / Year: 2023
Title: Structural insights into the binding of bS1 to the ribosome.
Authors: Gaetano D'Urso / Sophie Chat / Reynald Gillet / Emmanuel Giudice /
Abstract: The multidomain ribosomal protein bS1 is the biggest and the most flexible and dynamic protein in the 30S small subunit. Despite being essential for mRNA recruitment and its primary role in the ...The multidomain ribosomal protein bS1 is the biggest and the most flexible and dynamic protein in the 30S small subunit. Despite being essential for mRNA recruitment and its primary role in the accommodation of the start codon within the decoding centre, there has not yet been a high-resolution description of its structure. Here, we present a 3D atomic model of OB1 and OB2, bS1's first two N-terminal domains, bound to an elongation-competent 70S ribosome. Our structure reveals that, as previously reported, bS1 is anchored both by a π-stacking to the 30S subunit and via a salt bridge with the Zn2+ pocket of bS1. These contacts are further stabilized by other interactions with additional residues on OB1. Our model also shows a new conformation of OB2, interacting with the Shine-Dalgarno portion of the mRNA. This study confirms that OB1 plays an anchoring role, but also highlights a novel function for OB2, which is directly involved in the modulation and support of mRNA binding and accommodation on the ribosome.
History
DepositionJun 8, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 10, 2023Provider: repository / Type: Initial release
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Revision 2.0Nov 15, 2023Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Refinement description
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Revision 2.1Apr 24, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
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Revision 2.2Mar 12, 2025Group: Data collection / Structure summary
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 16S ribosomal RNA
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
V: P-site fMet-tRNA(fMet)
W: E-site tRNA
X: mRNA
Y: 30S ribosomal protein S1
a: 23S ribosomal RNA
b: 5S ribosomal RNA
c: 50S ribosomal protein L2
d: 50S ribosomal protein L3
e: 50S ribosomal protein L4
f: 50S ribosomal protein L5
g: 50S ribosomal protein L6
h: 50S ribosomal protein L9
i: 50S ribosomal protein L13
j: 50S ribosomal protein L14
k: 50S ribosomal protein L15
l: 50S ribosomal protein L16
m: 50S ribosomal protein L17
n: 50S ribosomal protein L18
o: 50S ribosomal protein L19
p: 50S ribosomal protein L20
q: 50S ribosomal protein L21
r: 50S ribosomal protein L22
s: 50S ribosomal protein L23
t: 50S ribosomal protein L24
u: 50S ribosomal protein L25
v: 50S ribosomal protein L27
w: 50S ribosomal protein L28
x: 50S ribosomal protein L29
y: 50S ribosomal protein L30
z: 50S ribosomal protein L32
0: 50S ribosomal protein L33
1: 50S ribosomal protein L34
2: 50S ribosomal protein L35
3: 50S ribosomal protein L36
4: 50S ribosomal protein L31
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,265,478371
Polymers2,257,73956
Non-polymers7,738315
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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RNA chain , 6 types, 6 molecules AVWXab

#1: RNA chain 16S ribosomal RNA


Mass: 498846.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: GenBank: J01859
#22: RNA chain P-site fMet-tRNA(fMet)


Mass: 24818.893 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli K-12 (bacteria) / References: GenBank: 687670942
#23: RNA chain E-site tRNA


Mass: 24802.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: GenBank: 1848851804
#24: RNA chain mRNA


Mass: 12422.526 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Escherichia coli K-12 (bacteria)
#26: RNA chain 23S ribosomal RNA


Mass: 941539.438 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: GenBank: NR_103073
#27: 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) / References: GenBank: M24300

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30S ribosomal protein ... , 21 types, 21 molecules BCDEFGHIJKLMNOPQRSTUY

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


Mass: 24971.764 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V0
#3: Protein 30S ribosomal protein S3 / Small ribosomal subunit protein uS3


Mass: 23078.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V3
#4: Protein 30S ribosomal protein S4 / Small ribosomal subunit protein uS4


Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V8
#5: Protein 30S ribosomal protein S5 / Small ribosomal subunit protein uS5


Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W1
#6: Protein 30S ribosomal protein S6 / Small ribosomal subunit protein bS6


Mass: 15727.512 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02358
#7: Protein 30S ribosomal protein S7 / Small ribosomal subunit protein uS7


Mass: 20055.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02359
#8: Protein 30S ribosomal protein S8 / Small ribosomal subunit protein uS8


Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W7
#9: Protein 30S ribosomal protein S9 / Small ribosomal subunit protein uS9


Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7X3
#10: Protein 30S ribosomal protein S10 / Small ribosomal subunit protein uS10 / Transcription termination/antitermination protein NusE


Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R5
#11: Protein 30S ribosomal protein S11 / Small ribosomal subunit protein uS11


Mass: 13870.975 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R9
#12: Protein 30S ribosomal protein S12 / Small ribosomal subunit protein uS12


Mass: 13814.249 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S3
#13: Protein 30S ribosomal protein S13 / Small ribosomal subunit protein uS13


Mass: 13128.467 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S9
#14: Protein 30S ribosomal protein S14 / Small ribosomal subunit protein uS14


Mass: 11606.560 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG59
#15: Protein 30S ribosomal protein S15 / Small ribosomal subunit protein uS15


Mass: 10290.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADZ4
#16: Protein 30S ribosomal protein S16 / Small ribosomal subunit protein bS16


Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T3
#17: Protein 30S ribosomal protein S17 / Small ribosomal subunit protein uS17


Mass: 9724.491 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG63
#18: Protein 30S ribosomal protein S18 / Small ribosomal subunit protein bS18


Mass: 9005.472 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T7
#19: Protein 30S ribosomal protein S19 / Small ribosomal subunit protein uS19


Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U3
#20: Protein 30S ribosomal protein S20 / Small ribosomal subunit protein bS20


Mass: 9708.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U7
#21: Protein 30S ribosomal protein S21 / Small ribosomal subunit protein bS21


Mass: 8524.039 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P68679
#25: Protein 30S ribosomal protein S1 / Bacteriophage Q beta RNA-directed RNA polymerase subunit I / Small ribosomal subunit protein bS1


Mass: 61238.887 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG67

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50S ribosomal protein ... , 29 types, 29 molecules cdefghijklmnopqrstuvwxyz01234

#28: Protein 50S ribosomal protein L2 / Large ribosomal subunit protein uL2


Mass: 29923.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60422
#29: Protein 50S ribosomal protein L3 / Large ribosomal subunit protein uL3


Mass: 22291.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60438
#30: 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
#31: Protein 50S ribosomal protein L5 / Large ribosomal subunit protein uL5


Mass: 20333.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P62399
#32: Protein 50S ribosomal protein L6 / Large ribosomal subunit protein uL6


Mass: 18932.791 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG55
#33: 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
#34: Protein 50S ribosomal protein L13 / Large ribosomal subunit protein uL13


Mass: 16050.606 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AA10
#35: 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
#36: 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
#37: Protein 50S ribosomal protein L16 / Large ribosomal subunit protein uL16


Mass: 15329.343 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADY7
#38: Protein 50S ribosomal protein L17


Mass: 14393.657 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG44
#39: Protein 50S ribosomal protein L18 / Large ribosomal subunit protein uL18


Mass: 12794.668 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0C018
#40: Protein 50S ribosomal protein L19 / Large ribosomal subunit protein bL19


Mass: 13159.278 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7K6
#41: Protein 50S ribosomal protein L20 / Large ribosomal subunit protein bL20


Mass: 13528.024 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L3
#42: 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
#43: Protein 50S ribosomal protein L22 / Large ribosomal subunit protein uL22


Mass: 12253.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P61175
#44: Protein 50S ribosomal protein L23 / Large ribosomal subunit protein uL23


Mass: 11222.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADZ0
#45: Protein 50S ribosomal protein L24 / Large ribosomal subunit protein uL24


Mass: 11339.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60624
#46: 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
#47: Protein 50S ribosomal protein L27 / Large ribosomal subunit protein bL27


Mass: 9146.540 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L8
#48: Protein 50S ribosomal protein L28 / Large ribosomal subunit protein bL28


Mass: 9027.551 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M2
#49: Protein 50S ribosomal protein L29 / Large ribosomal subunit protein uL29


Mass: 7286.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M6
#50: Protein 50S ribosomal protein L30 / Large ribosomal subunit protein uL30


Mass: 6554.820 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG51
#51: Protein 50S ribosomal protein L32 / Large ribosomal subunit protein bL32


Mass: 6463.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N4
#52: Protein 50S ribosomal protein L33 / Large ribosomal subunit protein bL33


Mass: 6388.631 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N9
#53: 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
#54: Protein 50S ribosomal protein L35 / Large ribosomal subunit protein bL35 / Ribosomal protein A


Mass: 7313.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q1
#55: Protein/peptide 50S ribosomal protein L36 / Large ribosomal subunit protein bL36-A / Ribosomal protein B


Mass: 4377.390 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q6
#56: Protein 50S ribosomal protein L31 / Large ribosomal subunit protein bL31-A


Mass: 7887.117 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M9

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Non-polymers , 2 types, 315 molecules

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


Mass: 24.305 Da / Num. of mol.: 313 / Source method: obtained synthetically / Formula: Mg
#58: 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

ComponentName: Elongation competent ribosome in complex with bS1 / Type: RIBOSOME / Entity ID: #1-#36, #38-#56 / Source: NATURAL
Molecular weightValue: 2500 kDa/nm / Experimental value: NO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: K12
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
110 mMMagnesium acetateMgOAC1
210 mMAmmonium chlorideNH4Cl1
350 mMPotassium chlorideKCl1
45 mMHEPES-KOHC8H18N2O4S1
51 mMDithiothreitolC4H10O2S21
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R3.5/1
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 293.15 K

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 36000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 400 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 35 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 6381

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Processing

Software
NameVersionClassification
phenix.real_space_refine1.20.1_4487refinement
PHENIX1.20.1_4487refinement
EM software
IDNameVersionCategory
1cryoSPARCparticle selection
2SerialEMimage acquisition
4RELION3.1 betaCTF correction
7UCSF Chimeramodel fitting
9RELION3.1 betainitial Euler assignment
10RELION3.1 betafinal Euler assignment
11RELION3.1 betaclassification
12RELION3.1 beta3D reconstruction
13CCP4 package3D reconstruction
14PHENIX1.18.2model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 294820
3D reconstructionResolution: 3.42 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 16381 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model building
IDPDB-ID 3D fitting-IDAccession codeInitial refinement model-IDSource nameType
16BU8

6bu8

16BU81PDBexperimental model
27NBU

7nbu

17NBU2PDBexperimental model
RefinementCross valid method: NONE

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