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- PDB-5afi: 2.9A Structure of E. coli ribosome-EF-TU complex by cs-corrected ... -
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Basic information
Entry | Database: PDB / ID: 5afi | ||||||||||||
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Title | 2.9A Structure of E. coli ribosome-EF-TU complex by cs-corrected cryo-EM | ||||||||||||
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![]() | RIBOSOME / TRANSLATION / PROTEIN SYNTHESIS / DECODING / ELONGATION FACTOR TU / TRNA / RNA MODIFICATION / ANTIBIOTIC | ||||||||||||
Function / homology | ![]() guanyl-nucleotide exchange factor complex / protein-synthesizing GTPase / guanosine tetraphosphate binding / negative regulation of cytoplasmic translational initiation / stringent response / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding ...guanyl-nucleotide exchange factor complex / protein-synthesizing GTPase / guanosine tetraphosphate binding / negative regulation of cytoplasmic translational initiation / stringent response / ornithine decarboxylase inhibitor activity / transcription antitermination factor activity, RNA binding / misfolded RNA binding / Group I intron splicing / RNA folding / translational elongation / transcriptional attenuation / translation elongation factor activity / positive regulation of ribosome biogenesis / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / translational termination / 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 / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / GTPase activity / mRNA binding / GTP binding / DNA binding / RNA binding / zinc ion binding / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å | ||||||||||||
![]() | Fischer, N. / Neumann, P. / Konevega, A.L. / Bock, L.V. / Ficner, R. / Rodnina, M.V. / Stark, H. | ||||||||||||
![]() | ![]() Title: Structure of the E. coli ribosome-EF-Tu complex at <3 Å resolution by Cs-corrected cryo-EM. Authors: Niels Fischer / Piotr Neumann / Andrey L Konevega / Lars V Bock / Ralf Ficner / Marina V Rodnina / Holger Stark / ![]() Abstract: Single particle electron cryomicroscopy (cryo-EM) has recently made significant progress in high-resolution structure determination of macromolecular complexes due to improvements in electron ...Single particle electron cryomicroscopy (cryo-EM) has recently made significant progress in high-resolution structure determination of macromolecular complexes due to improvements in electron microscopic instrumentation and computational image analysis. However, cryo-EM structures can be highly non-uniform in local resolution and all structures available to date have been limited to resolutions above 3 Å. Here we present the cryo-EM structure of the 70S ribosome from Escherichia coli in complex with elongation factor Tu, aminoacyl-tRNA and the antibiotic kirromycin at 2.65-2.9 Å resolution using spherical aberration (Cs)-corrected cryo-EM. Overall, the cryo-EM reconstruction at 2.9 Å resolution is comparable to the best-resolved X-ray structure of the E. coli 70S ribosome (2.8 Å), but provides more detailed information (2.65 Å) at the functionally important ribosomal core. The cryo-EM map elucidates for the first time the structure of all 35 rRNA modifications in the bacterial ribosome, explaining their roles in fine-tuning ribosome structure and function and modulating the action of antibiotics. We also obtained atomic models for flexible parts of the ribosome such as ribosomal proteins L9 and L31. The refined cryo-EM-based model presents the currently most complete high-resolution structure of the E. coli ribosome, which demonstrates the power of cryo-EM in structure determination of large and dynamic macromolecular complexes. | ||||||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 6.1 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 897 KB | Display | ![]() |
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Full document | ![]() | 1020.9 KB | Display | |
Data in XML | ![]() | 167.6 KB | Display | |
Data in CIF | ![]() | 288.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 2847MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-RNA chain , 6 types, 7 molecules avwxyAB
#1: RNA chain | Mass: 498909.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||||||||
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#22: RNA chain | Mass: 24818.893 Da / Num. of mol.: 2 / Fragment: Residues 49-125 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #23: RNA chain | | Mass: 3492.122 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #24: RNA chain | | Mass: 24797.088 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #26: RNA chain | | Mass: 941521.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #27: RNA chain | | Mass: 38813.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-30S ribosomal protein ... , 20 types, 20 molecules bcdefghijklmnopqrstu
#2: Protein | Mass: 26652.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#3: Protein | Mass: 26031.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#4: Protein | Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: Protein | Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#6: Protein | Mass: 15727.512 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#7: Protein | Mass: 20055.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#8: Protein | Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#9: Protein | Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#10: Protein | Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#11: Protein | Mass: 13870.975 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#12: Protein | Mass: 13768.157 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#13: Protein | Mass: 13128.467 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#14: Protein | Mass: 11677.637 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#15: Protein | Mass: 10290.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#16: Protein | Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#17: Protein | Mass: 9724.491 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#18: Protein | Mass: 9005.472 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#19: Protein | Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#20: Protein | Mass: 9708.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#21: Protein | Mass: 8524.039 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Protein , 1 types, 1 molecules z
#25: Protein | Mass: 43239.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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+50S ribosomal protein ... , 31 types, 31 molecules CDEFGHIJKLMNOPQRSTUVWXYZ0123456
-Non-polymers , 8 types, 363 molecules 














#59: Chemical | ChemComp-MG / #60: Chemical | #61: Chemical | ChemComp-FME / | #62: Chemical | ChemComp-KIR / | #63: Chemical | ChemComp-GDP / | #64: Chemical | #65: Chemical | #66: Water | ChemComp-HOH / | |
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-Details
Has protein modification | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: E. COLI 70S-EF-TU-GDP- KIRROMYCIN-PHE-TRNAPHE- FMET-TRNAFMET-TRNAFMET COMPLEX Type: RIBOSOME |
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Buffer solution | Name: 50MM HEPES-KOH, 70MMNH4CL, 30MM KCL, 20MM MGCL2, 1MM DTT, 0.6MM SPERMINE, 0.4MM SPERMIDINE, 0.15MM KIRROMYCIN pH: 7.5 Details: 50MM HEPES-KOH, 70MMNH4CL, 30MM KCL, 20MM MGCL2, 1MM DTT, 0.6MM SPERMINE, 0.4MM SPERMIDINE, 0.15MM KIRROMYCIN |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: CARBON |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Details: LIQUIDE ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS / Date: Dec 20, 2011 |
Electron gun | Electron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 192000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 700 nm / Cs: 0.01 mm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON I (4k x 4k) |
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Processing
EM software |
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CTF correction | Details: LOCAL CTF CORRECTION | ||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||
3D reconstruction | Resolution: 2.9 Å / Num. of particles: 417201 / Actual pixel size: 0.75525 Å Magnification calibration: CROSS- -CORRELATION WITH PUBLISHED ATOMIC COORDINATES Symmetry type: POINT | ||||||||||||||||
Atomic model building | Space: REAL | ||||||||||||||||
Refinement | Highest resolution: 2.9 Å |